Thunderbolt iv ignition amplifier. Sep 4, 2012 · Re: 1993 7.

Thunderbolt iv ignition amplifier Later models then evloved to controlling the spark curve like the Thunderbolt, MSD, Crane, and other ignition boxes do now. 0 Mercruiser Thunderbolt IV Ignition Module. 0 alpha 1 and it has ran great for years. I see modules with the 22 advance, but different part #'s, etc. Jul 22, 2016 · I have a 1983 Mercruiser 5. 3 Chevy for $100. Thunderbolt V Ignition System Manualzz. First, I will set the timing at the recommended 8 degrees advanced. Mercury Marine Mercruiser Service Manual 18 E Digital Files Mart. So that pretty much means it's gonna be the Module. What I am saying is that the plugs that go into the ICM were part of the motor harness I had to cut them off the harness should have spent the $400 and ordered the one per my ser. When I´ve my key in "RUN" position I kan messure 12volts on both poles (-) & + on mye coil. , 5. 3L V6 Ignition Amplifier Module V614 3909355A2 15247A1. Find many great new & used options and get the best deals for MerCruiser Thunderbolt IV Ignition Module 817509T at the best online prices at eBay! Free shipping for many products! item 5 Mercury Mercruiser Thunderbolt IV Ignition Module V6-14 GM 4. Connect power supply leads on light to 12 volt battery. After many months of not running, it couldn't generate spark. a TB V ignition. 0l 120 140 hp(US $169. Aim timing light at timing tab, located on timing Jul 26, 2005 · Mercruiser 5. 7L, Alpha One. 3L V6 engines with Thunderbolt Ignition from 1985 and Up ; Includes: Cap with brass terminals, Rotor, Gasket, Bolts › See more product details Aug 27, 2013 · Start by saying i have a 1987 formula223 mercruiser chev 350 mag/alpha. A Now if you get spark, install a new coil. This adapter harness was required when replacing an original Thunderbolt IV ICM with a second‑generation Thunderbolt IV ICM. Electrical Systems Wiring Diagrams Pdf Free Nov 11, 2012 · Now if you get spark, install a new coil. They are embossed (heat stamped) with V8-24 near the connector end. The problem started on the water last summer. " Part Number(s) Included 390-9355A2 MerCruiser Thunderbolt IV 4. Coil. You will most likey have too replace the whole system. 3L V6 Applications Only--- 1985-1987 Subsequent future models used the triangle style with the wiring harness. 7L Carbureted Models 0B525982 and above 454 & 7. Mercury-Mercruiser 15899A1 IGNITION AMPLIFIER (W/HARNESS 84-15275A1) (305CID) genuine factory part not aftermarket. Technically you can use this to replace those, but I wouldn't recommend it. Had a similar problem with my thunderbolt IV system also. 52 item 4 Mercury Mercruiser Thunderbolt IV Ignition Module V6-14 GM 4. Jun 25, 2009 · The engine turns over no problem and there is 12v at the coil so i don't think any problem with the ignition switch. If no 12 volts present w/it disconnected--ignition amplifier is shot and must be replaced. Specifically the V8-24 modules, the old part number was 15248A1 and the replacement number is 15248T01. Correction Sep 22, 2011 · After testing distributor and coil we found this on how to test the thunderbolt ignition. Manual however does not state it has to be perfect 12. 0l v8 v822 stam. Very advanced at idle. The coul has a bracket with a 9/16 bolt holding it to teh block. It has a 280 Drive with the TB IV ignition. I have replaced cap, rotor, wires and coil. (or power to ign. I included a picture of the box that the ignition and wiring were stored in. Troubleshooting: Thunderbolt Ignition Systems Tests for TB ignition: W/ignition key on AND BILGE WELL VENTILATED OF GAS FUMES!!! 1. When I start the boat up she runs fine then after 30 seconds she dies. 00-$210. Then I increased throttle and the timing mark moved. From running free shipping to the lower 48 via USPS find best deals at carb nation. Thread starter Ken_S; Start date Sep 28, 2018; K. 1 spark plug. trouble is it worked fine the last time I fired it up. amp. Mar 23, 2012 · I'm installing a new thunderbolt IV distributor in a system that was meant to have one but didn't for unknown reasons. as measured in the idle getting rougher and rougher and missing more and more flashes as seen on the timing light. I replaced the entire Thunderbolt IV system (except wiring harness and distributor body) without solving a single thing. Worse. 3L Mercrusier engine. Add to Compare Jul 3, 2008 · The ignition amplifier for the thunderbolt IV ignition is still available, the part number was changed to 15248A1 and it now costs about $375 and you DO NOT need it with the EST ignition system. Mercruiser thunderbolt iv ignition wiring diagramTesting thunderbolt iv hei ignition system Thunderbolt ignition iv amplifier mercruiser marineHow mercruiser thunderbolt ignition systems work. <br /><br />The red/white wire coming out of the ignition module reads only 10. Mercruiser 4. 3 with the Thunderbolt IV Ignition. Open Sidebar. Fits: Thunderbolt IV 4. coil from module and kill switch /ignition. 0L/5. 0L V8 V822 Stam. For Mercruiser Thunderbolt Ignition Sensor 4 3 87 91019a3 892150q02 Pick Up At Affordable S Free Shipping Real Reviews With Photos Joom. 00) Electronic ignition conversion upgrade kit for mercruiser 2. USA seller. Mercruiser icm replacement kit for thunderbolt iv ignition systems. Review MERCRUISER Icm Replacement Kit Thunderbolt Iv Ignition Systems. At least, I'm *assuming* this is what I need. V8 22A stamped on module. Recently I started experiencing I believe a timing advance problem. Last Summer it started having issues, when hitting trim button the engine would cut out for a moment if running about 3/4 throttle. 49 Get it as soon as Saturday, Feb 1 Aug 15, 2008 · I believe that I have identified the Thunderbolt IV igniton amplifier as the culprit following the Mercruiser troubleshooting flowchart. Find many great new & used options and get the best deals for 390-7804a3 MerCruiser V8 Thunderbolt IV Y Ignition Module at the best online prices at eBay! Free shipping for many products! Apr 6, 2024 · MerCruiser Thunderbolt IV Ignition Amplifier Box 305 5. Oct 2, 2009 · A friend of mine bought a fixer-upper and has been trying to diagnose a no-start, sometimes hard to start condition. Thought it was the ignition sensor but swapped that out and still no spark. This upgrade is simpler than a Thunderbolt V upg View parts diagrams and shop online for DISTRIBUTOR & IGNITION COMPONENTS(THUNDERBOLT IV IGNITION) parts, 1988 Inboard Engine 5. All the sensor does is give the amplifier a pulse as the rotor window passes. MerCruiser Thunderbolt IV Breakerless Electronic Timing High Energy Ignition Amplifier Module; V824 Stamp-(Not always visible) I can't see it on this one, but the DIFFERENT V822 stamped ones, the "V822" is hard to miss (right next to the sticker) if it has it so make sure to not mix these up The primary symptom of a bad ignition amplifier is NO SPARK AT ALL. Ignition sensor Replaces: 87-892150Q02; 87-892150A02; 87-861780A2; 87-91019A6; 87-861780Q4; 87-861780A4; 87-91019A3; 87-91019A2 Find many great new & used options and get the best deals for Mercruiser Thunderbolt IV 4 Ignition Module Amplifier 4. Apr 27, 2020 · Hello to all I am looking for help 1983 Chaparral 19. My 2452, with a 5. com FREE DELIVERY possible on eligible purchases Oct 16, 2011 · Re: Thunderbolt IV wiring question No, there isn't any ground wire from the distributor to ground, the housing is the ground, that is done by clamping down the distributor not with a wire. Has a 2BBL Merc Carb that I just rebuilt and fuel pump has good pressure. Turned off the boat, and when I tried to start it back up it just cranked and cranked. but ti si nolonger available. Sierra 18-5438 Ignition Coil for Thunderbolt Mercruiser & Crusader Ignitions Sierra replacement ignition coil. For Mercruiser Thunderbolt Ignition Sensor 4 3 87 91019a3 892150q02 Pick Up At Affordable S Free Shipping Real Reviews With Photos Joom Jan 5, 2023 · Thunderbolt Iv Ignition Modules V6 14 Offsonly Com. Find Mercruiser Thunderbolt Iv Ignition Module Wiring Harness 4 3 5 0 7 V6 V8 In Moss Point Mississippi United States For Us 50 00. 7 350 merc iv thunderbolt ignition. The TB-IV system was used until the introduction of TB-V mid-way through 1996. NO SPARK, replace ign. Compression is 125, 122, 125, 124, 125, 126 (in firing order). The mark was bouncing around a little at idle but not bad. # MerCruiser 4. Quantity Pricing . Oct 19, 2005 · General Q & A - Info needed on how to hook up a MSD / Thunderbolt IV - Does anyone know where or can explain how to hook up a MSD 6A to a Thunderbolt IV ignition . Refer to ?Specifications? for cylinder numbering and location. 95 shipping available. Thunderbolt IV Ignition Control Module Service OEM MerCruiser GM V6 & V8 Thunderbolt IV & V Ignition Coil Part number:300-8M0079202 (This part supersedes part numbers:392-805570A2,392-7803A4,392-7803) Genuine Buy MERCRUISER 15899A Thunderbolt Ignition Module Amplifier $295. I have a green/white and a red/white wire coming out of the distributor. Aug 12, 2022 · Replacement Kits For Thunderbolt Iv Ignition Control Module Perfprotech Com. 0L V8 V822 Stamped Home MerCruiser Parts - Used. Details are that I have 12 volt at plus side of coil. Once it sets for hours or sometimes days it will 5. A boat dealer just closed and liquidated his entire business including parts that are brand. A matter of pulling the connector pn gthe V and plugging into teh IV substitues it. 0 v-8 with thunderbolt V ignition. Please check your part numbers to confirm fitment. (right way) Anyone ever seen this? Is this a quick fix masking some Nov 4, 2023 · Mercruiser thunderbolt iv ignition amplifier box 305 5. Apr 29, 2021 · In this video I explain how I think the Delco EST Ignition module “knows” what size engine it is installed on. Used unit in working condition. I try to restart and the engine will crank Jul 9, 2010 · Re: want to replace thunderbolt iv ignition system I had a similar issue last season and replaced mine with an MSD marine package deal. 3l volvo penta motor with a Mercruiser thunderbolt IV ignition system. Feb 25, 2014 · Re: Thunderbolt IV Ignition Amplifier/Module There is no point in keeping the TB4 system once it has let go. 3L Thunderbolt V ignition issue. Now one house sold and its time to get my kids back on the water so I run through the check list item 3 Quicksilver 15247T02 Thunderbolt IV Ignition Amplifier "Robin's Marine" Quicksilver 15247T02 Thunderbolt IV Ignition Amplifier "Robin's Marine" $404. Mercruiser Ignition Module Perfprotech Com. 0 5. wht/grn from module to dis. IMPORTANT: Adapter harness (15275A1) is no longer available from the manufacturer. part #: 821125t02 price. $28. The manual shows it wired different. Customer: I have a Mercruiser 4,3 Alpha one with Thunderbolt IV module (1989 model). Quicksilver 805759q3 Distributor Cap Kit For Marinized V 8 Gm Engines With Thunderbolt Iv Hei Ignition Systems West Marine. Jump to Latest Follow 1K views Battery powered (hei) high energy ignition Mercurieser Stern Drive 805185A36, 805185A26, 805185A16, 805185A6, 805185A43, 90747A27, 90747A25, 90747A21, 90747A3, 862057A4 Uses a hall-effect type sensor to trigger ignition accurately even at extremely low rpm Designed as a Direct replacement for Mercury thunderbolt IV ignition distributors Fits: gm V-8 engines w/thunderbolt IV &amp; V ignition May 4, 2014 · Re: Thunderbolt IV replacement Module 22 deg sounds right, would want to verify with a volvo manual for your package for sure thunderbolt ignitions are pretty stable, the only issue I have had with the older style modules like in your pic is 1) they DO wear out, especially being 30 years old and 2) they dont want to work properly with newer style ignition sensors, there is a problem with an Nov 2, 2023 · Find many great new & used options and get the best deals for Quicksilver 15247T02 Thunderbolt IV Ignition Amplifier "Robin's Marine" at the best online prices at eBay! Free shipping for many products! 892150Q02 Ignition Sensor Kit for MerCruiser Stern Drive GM V6 and V8 with Thunderbolt IV and V Ignition 87-892150Q02 87-91019A3. When hot the ignition fails completely. I winterized the boat last fall and I had to let it sit due to two house payments. Thunderbolt V Question Club Sea Ray Jun 3, 2012 · Do It Yourself, Boating on a Budget - Need wiring schematic for 260 mercruiser with thunderbolt IV 4 ignition - OK, putting everything back together and something isn't right. 3L, 5. Thunderbolt V was an improvement on an already exceptionally reliable and well performing system. I winterized it and Aug 29, 2023 · Replacement Kits For Thunderbolt Iv Ignition Control Module Perfprotech Com. Replaces Mercury part # 392-7803A4, 392-805570A2, 18-5438 This ignition coil meets or exceeds OEM specifications Direct replacement Key Features:Battery Powered (HEI) High Energy IgnitionUses a Hall-Effect type sensor to trigger ignition accurately even at extremely low RPMDesigned as a direct replacement for Mercury Thunderbolt IV Ignition DistributorsMeets or Exceeds SAE J1171 StandardsAdditional Details:Fits: GM V-8 Engines w/Thunderbolt IV &amp; V IgnitionUse With:18-5273: Tune Up KitCross ReferencesGLM71250Mercruiser Mar 31, 2012 · Distributor (thunderbolt iv), coil (internal resist, sensor, rotor&wheel, ignition amplifier, plugs and wires are all brandy new. It was waaaay off. 7 at the best online prices at eBay! Free shipping for many products! Buy 805759Q3 Distributor Cap and Ignition Rotor Kit for Marinized 5. None of these made any difference. 4L) With Thunderbolt IV MCM FAST & FREE SAME-DAY SHIPPING ON ALL ORDERS PLACED BEFORE 12PM EST MON-FRI Sep 10, 2021 · Mercruiser Thunderbolt Iv No Power To Coil Boating Forum Iboats Forums. Thunderbolt V Question Club Sea Ray Find many great new & used options and get the best deals for Mercruiser Thunderbolt IV Ignition Amplifier PN 390-9355a2 15247t02 M47-5 at the best online prices at eBay! Free shipping for many products! Fits GM V-6 engines w/ Thunderbolt IV & V ignition. Ignition module, distributor, cap, and wires ran about $700 online. If 12 volts is present, replace the ignition sensor inside the dist. 00 Price. Next time on the Sep 4, 2012 · Re: 1993 7. Discover more answers I have a 1989 mercruiser 4. Now after 5-15 minutes it quits and when I check for spark it is not firing. It consists of four components and a 12-volt source to operate it. Jun 22, 2018 · First the ignition sensor inside the distributor, then the Thunderbolt IV module itself, and finally the coil. The ONLY reason a coil would say it needs an external resistor is IF that coil was going to be used on a points system. , and where can I avoid paying $500 for one? Thanks for the help in advance Jun 26, 2020 · Hey all, I'm finishing up a 3yr restoration of my 96 bayliner I started up the engine on muffs a couple weeks ago to check my throttle/carb settings and everything was working great. Jul 29, 2014 · I think it may be coming from the Thunderbolt ignition box. 4 Mercruiser Bravo One with Thunderbolt IV Ignition. 0 out of 5 stars. No spark from coil, tested the ignition according to the Mercruiser service manual; I'm getting +12v on the positive side of the coil; service Troubleshooting Thunderbolt IV (HEI) Ignition System The Thunderbolt IV ignition system is a relatively simple system. I have replaced the distributor cap and rotor, the sensor, the ignition amplifier (replaced with a used guaranteed to work amplifier) ignition coil, wires and plugs, starter, and battery. Same thing would start fine,but would not rev past 2500 rpm - sputtered,cough,back fire and would not rev. my question is i have a thunderbolt iv ignition on it , and the ignition amplifier has gone out . In #2, if there is No voltage present, disconnect the white/red wire and check it again for 12 volts. 00; specifications ignitionstartin: brand: Mercruiser; mpn: 821125t02; part type: Ignition; country/region of manufacture: United States; Returns ignitionstartin: policy: no returns May 1, 2013 · Now if you get spark, install a new coil. #4 - In #2, if there is No voltage present, disconnect the white/red wire and check it again for 12 volts. from module, but only 3 volts on the White/red wire on side of dist. 4L, 8. Connect timing light (91-99379 or similar) to No. 00) Mercruiser 4. Amplifier module only, no wiring harness. Quantity Price; Typically Ships Out in 3-5 Business Days-+ May 15, 2012 · Re: Thunderbolt IV ignition problems. 99 Free shipping Jul 14, 2003 · Thunderbolt IV Ignition Amplifier. Part number 814295A 1. 00; specifications steelectr: for models: Mercruiser; for makes: Mercury; mpn: 9355a2; part type: Ignition Amplifier Nov 27, 2017 · Replacement Inboard Ignition Coil - Compatible with MerCruiser Thunderbolt IV and V Ignition Systems with HEI - Replaces 18-5438, 392-805570A2, 392-7803A4, 392-805570A1, 72115, 40511 $32. Jun 3, 2008 · Thunderbolt IV Ignition Timing 1. Mercruiser Thunderbolt Iv No Power To Coil Boating Forum Iboats Forums. Dist,coil,and amplifier. 0l engine (Thunderbolt IV ignition) engine s/n starts with 0D0 (the boat is a 1992). . went out boating for the day boat was running great then all of the sudden it backfired and stalled then I had no spark I figured out that it was the ignition amplifier the one I had was thunderbolt IV with the mark 22a. Jun 25, 2012 · I replaced all the ignition components except the coil with new, never-installed before mercruiser thunderbolt iv ignition parts with matching part numbers. Ignition Coil For Mercruiser Thunderbolt Iv V Repl 300 8m0079202 Dec 29, 2017 · New Distributor cap and rotor kit with ignition sensor and spark plug wires for Mercruiser V8 engines with Thunderbolt I and IV Ignition systems Cap and rotor kit Replaces 805759Q3. 3 Mercruiser 7 5 17 - YouTube. Battery is fully charged and reading close to 13 volts. Full 12V coil (no resistor) Magnetic sensor in distributor (no points or advance weights) and an amplifier/advance control usually mounted on the port-side exhaust elbow. If Battery powered (hei) high energy ignition Mercurieser Stern Drive 805185A36, 805185A26, 805185A16, 805185A6, 805185A43, 90747A27, 90747A25, 90747A21, 90747A3, 862057A4 Uses a hall-effect type sensor to trigger ignition accurately even at extremely low rpm Designed as a Direct replacement for Mercury thunderbolt IV ignition distributors Fits: gm V-8 engines w/thunderbolt IV &amp; V ignition Aug 6, 2002 · Thunderbolt IV mounted on exhaust elbow wht/red from module to dis. Ignition module has V8-24S on it, but not sure if it has not been changed in the past. Test, retest, check, and recheck everything thoroughly and determine with certainty what is causing the problem before purchasing parts. ihave looked for the part . I have seen HEI distrubutors for the 4. Mar 13, 2017 · I have been on a lot of forums and seen some of the more common problems. 00; W4A Mercruiser Thunderbolt Iv Ignition Module V8-22A 15899A1 814295A1 Used. cap. 7L Alpha and a Thunderbolt IV. is there a diferant unit out there that i dont have to change out everthing ? the motor is a mcm 898 / 305 cid / vin (nnn) nnn-nnnn . from ign. Apr 5, 2022 · In this video I show how to upgrade a Mercruiser Thunderbolt IV ignition system to a new Delco EST ignition. Always make sure you connections are clean &amp; tight while troubleshooting your existing one. Skip to content. I have gone through the thunderbolt IV ignition troubleshooting chart. Jan 9, 2016 · Thunderbolt IV and V ignition systems. Nov 19, 2011 · Now if you get spark, install a new coil. It ran great last winter when I put it away. If just barely started to fire-up, but died. The engine starts and runs fine at lower rpm's. Find many great new & used options and get the best deals for Mercruiser Thunderbolt IV Ignition Amplifier Distributor Coil V-8 at the best online prices at eBay! Free shipping for many products! Nov 20, 2022 · I have the t bolt IV next to teh V. 0L Carbureted Models 0B525982 and above 5. Just the other day, I went to start it up again to check a few more things and it would not start for If still no improvement, the ignition amplifier is bad. The four components are: ignition coil, ignition amplifier, ignition sen-sor and sensor wheel (Figures 1 and 2). New coil, distributor ignition sensor, cap, rotor, and computer module. Dec 29, 2017 · New Distributor cap and rotor kit for Mercruiser V6 engines with Thunderbolt I and IV Ignition systems ; Replaces Part #: 815407Q5, 815407A2, 18-5274, 9-29317 ; Fits: All GM 4. Check Details. I then can advance the New in box thunderbolt ignition . gray neg on coil to tac. Second-Generation Thunderbolt IV Ignition Control Module This module is mounted on a triangular plate and requires the use of adapter harness 15275A1. I have 12 volts on the White/green wire on side of dist. purple on pos. 3 V6 84-15274A1 at the best online prices at eBay! Free shipping for many products! Jul 14, 2010 · I have a 4. 3L. 00–$375. Also the rotor looks fine and i have replaced the sensor about a year ago Sep 28, 2018 · Mercruiser 4. The engine runs fine at idle in the water and then after 10 minutes at idle I shift into gear and within 5-10 minutes the engine dies. Connect tachometer to engine. Apr 16, 2006 · I've done all the troubleshoot and testing possible and I've unfortunately had to conclude that the cause of my no spark/no start situation is due to a failed distributor module. Out of Stock. If you have no engine speed increase, it's not the ignition system. May 9, 2011 · Re: Thunderbolt IV timing advance at one point I had a somewhat similar problem and finally traced it to poor connections in the ignition wiring, It completely went away once I cleaned all the connections and plugs and connectors - In particular I thin that the receptical that plugs into the ignition module and the corresponding ignition module prongs were the major culprit For MerCruiser Thunderbolt IV & V ignition systems. How Mercruiser Thunderbolt Ignition Systems Work Boating Forum Iboats Forums. 25 volts instead of 12. 5l 3. sensor. Item Details. Nov 16, 2022 · Thunderbolt Iv Ignition Modules V6 14 Offsonly Com. Mar 12, 2011 · Need some help. It happened last spring. 7L and 525SC. blk. Notify When Available ©2019 by Cable Boats MerCruiser Thunderbolt IV Ignition Amplifier Box 305 5. 2. Jul 19, 2018 · Can I adapt the new style Thunderbolt IV module to work in place of the riser mounted amplifier? I have seem a few other posts saying the MSD was a waste, ill look into the delco voyager. Aug 14, 2010 · 5. Dec 25, 2005 · I have a 1992 Thunderbolt IV Ign. Timing lights are about $30 at the auto stores. Get $50 off $500+ with code 50IN2025. Is the ignition still good? Can it be the reason I am having hard starting? Jun 6, 2021 · Boat Supposed To Have An Ignition Module. Quantity. slector switch? He gave it a dirrect 12 volt source when the bats are turned ON. One thing about the EST, is you can not set the timing and make it run right without first putting it in base timing mode. Fresh Water, Good Working order. 00. In August I hit the trim button, engine backfired, died, and did not restart. Jun 30, 2012 · I have a 1985 Mercrusier MCM 205 4. We did the test below and found the ignition sensor bad. sensor from module?). Since we get questions about these systems, I though I could relate my findings, ala CaotharvÔǪ There is a reason I researched this. I have a 86 merc 260 HP also and had the same thing happen, the ignition box craped out. 3 thunderbolt iv ignition I have a weak spark at the Mercruiser thunderbolt iv ignition amplifier pn 390-9355A2,15247t02 M47-5 please see pics wires were cut. 0L) 1981-1987 If you are unsure if this is right for you, please ask Part number: V8-22 Stamp Aug 10, 2008 · "Like bernard, I also need an ignition amplifier; mine's for a 305 5. 640447-ignition-amplifier-help device adapter to test mercruiser thunderbolt IV ignition modules. I did not know at the time the amplifier needed to be changed. # 0F131944. 99) Tune-up kit cap rotor sensor wires mercruiser thunderbolt big block 454 7. MerCruiser 454 (7. 3 15247A1 with HARNESS. I have confirmed the coil is good, but I suspect either the ign. I used the distributor from the omc, new cap, new wires, v6 amplifier. 1988 I replaced ignition coil and I still have no spark. 0L, 5. How would I trouble shoot the ingnition module (they are expensive). Boat Supposed To Have An Ignition Module. The ignition amplifier module stamp number is 6v-18. Let it sit for a lil and it started back up, that day no more problems. Will work with Engine 5. 2l(US $129. Took out the thunderbolt system-dizzy and module and put my sons dizzy outa his boat - points system ( Chevy 305) tried it and all was good. 3l distributor thunderbolt iv(US $100. Mercruiser Wiring Diagram Source Page 2 Offsonly Com. Probably just semantics as how the term "ignition amplifier" is used nowadays. The engine will idle perfect at 750-800 rpm. 49 $ 24 . part# 9355a2 prices: $175. 7L, 7. Mercruiser Thunderbolt Iv Ignition Module Wiring Harness V6 V8 4 3 5 0 7 454 99 Picclick. 99 Get it as soon as Thursday, Aug 29. Ignition Module - 15247T01, 15247T01 Quicksilver by Mercury. Sep 5, 2012 · Re: Thunderbolt IV ignition questions and timing Okay, I checked timing. module or the ign. Aug 17, 2013 · I'm about to pull what little hair I have left out! 1991 Sea Ray with Mercruiser 5. 4L Bravo/Thunderbolt IV Ignition Problem The resistor, either internal or external, is not wanted or needed on the Thunderbolt ignition. MerCruiser 305/350 (5. Thunderbolt was a mercury marine designed ignition, used only by mercury. Mercury® MerCruiser® and Quicksilver® Ignition Control Modules No Longer Available (NLA) Scope Worldwide Models Affected MerCruiser Sterndrive & Inboard Applications Serial Number 4. 00 $ 28. If the engine it's running, the sensor and amplifier are working. Jul 8, 2012 · From what I hear, the Thunderbolt IV is a very good ignition system. Also Pertronix makes a distributor, its much less expansive and seems to work in the same manner as the MSD - thoughts on that one? May 29, 2004 · I have a 1990 5. Find many great new & used options and get the best deals for OEM MerCruiser Thunderbolt IV Ignition Module V8 5. just cranks. Second‑generation Thunderbolt IV ICMs are still available (without the adapter harness). 3L Carbureted Models 0B527955 and above 5. 0 should do. I've tried using gas straight to the carb. 3 V6 OEM 7L25A $179. Jun 26, 2011 · Re: Thunderbolt IV ignition HELP!!!! Yes there are many replacement system available. 7L [SKI] 3570111AS. 2L, 350 V8 Engines with Thunderbolt IV and V HEI Ignition Systems - Replaces 805759Q3, 805759T3, 805759T1, 18-5395: Cap & Rotor Kit - Amazon. I have new coil, new distributor and sensor, new startet and brand new plugs. 5 ft boat ran great end of last season So last week I pulled outta storage and washed the dust off I have replaced cap and rotor plugs and coil boat has Thunderbolt IV ignition system No spark I have run all diagnostics and have just Customer: I have a 1987 Merc Cruser 260 v8 with the thunderbolt IV ignition amplifier. MerCruiser 305 5. I got it do the same one more time and then never again Find many great new & used options and get the best deals for Mercruiser Thunderbolt Ignition Module Amplifier 15899a 1 at the best online prices at eBay! Free shipping for many products! Feb 13, 2015 · Attention! Your ePaper is waiting for publication! By publishing your document, the content will be optimally indexed by Google via AI and sorted into the right category for over 500 million ePaper readers on YUMPU. The exception is the coil which was from a mercruiser dealer that had a napa parts store integrated with it. Timing issues Thunderbolt 4 on 4. To troubleshoot the ignition system all that is Jun 13, 2012 · The early ignition amplifiers did nothing more than up the voltage taking the load of the distributor and hence the points. Jan 26, 2020 · Have a 1998 Merc Carb'd 454 w. I give it gas and it bogs down and backfires throught the carb. I have changed the sensor, rotor button, and coil. However, these modules are over $300. The amplifier itself is grounded, and on yours is usually on one of the mounting bolts for the amplifier itself where it mounts to the elbow. 4L Carbureted Models 0B721206 Dec 4, 2019 · General Q & A - Mercruiser Thunderbolt IV Ignition Module - I am looking for a pair of Mercruiser Thunderbolt IV Ignition Advance Modules. Electrical Systems. Ken_S many times the stock ICM trigger pickup goes and not the Aug 30, 2013 · Re: ignition Amplifier help!!! Yeah whatever it came off from it was built into the harness. 7L, 250 HP, 2 bbl carb engine had developed a problem. Mercruiser 260 - 4 brl - If it is the ignition amplifier, is it the same as the thunderbolt 4 high energy ignition module I have bolted to the riser? Looking for parts I cannot find the thunderbolt IV for a 1987 454 mercruiser serial number OB522430. 0L that i want to convert to TBI , it has a Thunderbolt IV HEI Controller , Going though the manual for GM HEI Setting i under stand what goes where The Thunderbolt IV has 5 wires black = Ground purple = + Coil + 12volts Gray = - Coil White Green = Dis White Red = Dis any help thanks Oct 16, 2012 · Thunderbolt IV and V are Merc's HEI ignition. It ran 30 at top end and idled well so not too bad but certainly not what a 5. In Need Of A Wiring Diagram Offsonly Com. Fits: GM V-6 & V-8 Engines With HEI Thunderbolt IV Find many great new & used options and get the best deals for 84-15275a1 MerCruiser Thunderbolt IV Ignition Amplifier Wiring Harness Wire at the best online prices at eBay! Free shipping for many products! Sep 17, 2009 · I have a 1987 Mercruiser V6/260 which uses the thunderbolt IV ignition. Generally Found Mercruiser V8 Models (305 5. 15899T01, 15899T02 Apr 30, 2010 · Anyone know why the PO of my boat wired the Thunderbolt IV ignition amplifier directly to my Perko Bat. Nice. I have the ignition amp connected to the coil via the purple & grey wires. 4,8. If no 12 volts present w/it disconnected--ignition amplifier is shot and must be replaced You are buying a brand new old stock Mercury Mercruiser Thunderbolt IV Ignition module & 84-15275A1 harness assembly. 3L 4. 2L Engine - Replace 87-91019A2, 87-91019A6, 87-892150Q02, 87-861780Q4 - Ignition Pickups: Systems & Kits - Amazon. FAST $4. My system has been modified as each engine doesn't match the other and seeing how they are both in the same 1986 boat, I would think they would Jan 10, 2021 · Buy 87-91019A3 Ignition Sensor Kit Replacement for MerCruiser Thunderbolt Distributor on 4. This is used and is in good working order. 3 coils in 2 days. 7L) With Thunderbolt IV ignition & Perimeter bolt Rocker covers - Which is basically the early 80's engines. A spare coil on Amazon is about $30, as is the sensor. Nov 22, 2011 · Replacement Inboard Ignition Coil - Compatible with MerCruiser Thunderbolt IV and V Ignition Systems with HEI - Replaces 18-5438, 392-805570A2, 392-7803A4, 392-805570A1, 72115, 40511 $24. The boat is a 1992 crownline 350 Mag with thunderbolt IV ignition. 99 $ 32 . $189. If this harness is damaged and needs to be replaced, a new ignition control module and harness kit must be ordered. 0 mercruiser syern drive. is ground . 4. I had issues after running the boat for a hour and then sitting for a short period of time. I love that Thunderbolt system, and wanted to have another ready when/if this one wears out…I guess my question is which one to buy. It has a Thunderbolt IV Ignition System. How Do I troubleshoot my Mercruiser Thunderbolt Ignition? Mercury Service Bulletin 92-11 Now if you get spark, install a new coil. from what I've read, it Jun 6, 2016 · 1995 7. 00 Find or Sell any Parts for Your Vehicle in USA Parts for Sale May 28, 2021 · I have a 1995 Rinker Flotilla with 4. 3 V6 OEM 7L25A Sep 26, 2014 · And, the advance is not done in the sensor, it's done in the amplifier (module mounted on the exhaust elbow). 1985 Mercruiser 260 Thunderbolt Iv No Spark Boating Forum Iboats Forums. May 30, 2012 · Re: Thunderbolt IV Ignition - can a V6 version be used on the V8? You are right - it would not crank. Matching part replacements. I have a 1995 Mercruiser 454 with the Thunderbolt iv ignition system. Is it possible to toss the Thunderbolt IV and replace it and the distributor with a GM or aftermarket HEI distributor? May 5, 2014 · The boat is an 81 Anacapri, but repowered it about 2 years ago with the same V8. 3l thunderbolt ignition module v614(US $145. Mercruiser introduced the Thunderbolt IV onto their engines in 1982, alongside the introduction of the 1-R drives. 3. Mercury Mercruiser Mcm 4 3l Bravo Efi Alpha 3lh Service Manual Manualzz. 0L V8 305 Engines 1987-1995 305 Engines Other Details Freshwater Used Parts The stampings on these are Find many great new & used options and get the best deals for Mercruiser Thunderbolt IV Ignition Amplifier 390-7804a3 Distributor 90577 V-8 at the best online prices at eBay! Free shipping for many products! Replacement Thunderbolt IV ignition control modules (ICMs) no longer come with the adapter harness (15275A1). This is important because there are 3 differen hi i have a 1984 5. 3L V6 Ignition Amplifier - Square Box Style General Application / Compatibility MerCruiser 4. Switch it to the delco voyager and forget about it. Mercury Mercruiser Mcm 4 3l Bravo Efi Alpha 3lh Service Manual Manualzz Feb 12, 2017 · Working on a 1994 350 magnum, Ser. I have the sensor installed inside the distributor and connected to the ignition amplifier via the wh/g & wh/r wires. No spark from coil. as I was doing all this, the performace was slowly deteriorating. The engine just cranks over as if not getting spark. Now today, I tried to start it on ear-muffs. She will fire right back up and run another 30 Find many great new & used options and get the best deals for MerCruiser Thunderbolt IV Breakerless Ignition Amplifier V6 390-9355a2 at the best online prices at eBay! Free shipping for many products! Purchase 7804A3 Ignition Amplifier, Mercruiser Thunderbolt IV, Breakless Ignition in Rancho Cordova, California, United States, for US $175. 3LX. However, check teh timing. After cooling, it runs normal. Ignition Amplifier Mercruiser Web no spark from coil, tested the ignition according to the mercruiser service manual; Situation replacement thunderbolt iv ignition control modules (icms) no longer come with the adapter harness (15275a1). What is the correct replacement part no. All Sierra aftermarket parts are manufactured to meet or exceed OEM requirements. and to module. com FREE DELIVERY possible on eligible purchases Dec 27, 2023 · Brand New Mercruiser Thunderbolt IV Ignition Amplifier Module V6 4. Get $25 off $250+ with code 25IN2025. Offering discount prices on OEM parts for over 50 years. Mounted on the distributor is the module. I moved it back to around 8 degrees BTDC and the idle adjust properly, sounds alot better now. 3 V6 OEM 7L25A Mercury Mercruiser Thunderbolt IV Ignition Module V6-14 GM 4. Usually no pulsing at negative. I have also unhooked the **** interupt switch, no luck. The current engine is a 1995 Mercruiser 4. 0L Thunderbolt IV ignition & Center-Bolt Rocker Covers - Which is basically the early 80's engines right after the perimeter bolt ones Would basically Cover MerCruiser GM 5. 99) May 5, 2010 · Re: 1987 ignition amplifier/upgrade if it is the TB IV, why change it if it is working? The amplifer does two things: 1) takes the pulses from the trigger and fires the coil, 2) advances the timing as the rpms increase. module. Cost $72 at marine store and it is a newer version. I went to MSD site but Im not for sure about which instructions to go by since none of instruction say anything about the spark advance module. Thanks for the link BT. 48. $200. Start engine and run at normal idle speed. Aug 10, 2020 · Mercruiser Thunderbolt ignition systems. Then sometimes it will start and when shut down a couple of minutes later it will not restart. xzoxydva uqsziunl bbhqqe gbm vgixdv fnwxyc vbixye yaokdbl vgpsg jdyzz