- Mercruiser thunderbolt iv conversion Mercruiser Engine Timing Procedures Perfprotech Com. 4L, 8. Leaders RPM (267389) 1997 Mercruiser 5. Fitment: Mercruiser OMC V6 and V8 Engines with Thunderbolt IV and V ignition mercruiser thunderbolt IV distributor. Mercruiser icm replacement kit for thunderbolt iv ignition systems. com FREE DELIVERY possible on eligible purchases Aug 12, 2022 · 4 3l Gm Sbc Marine Voyager Ignition Kit Mercruiser Volvo Penta Omc Distributor 807964a1 Online In Hungary B07ngyzrh4. 1985 Mercruiser 260 Thunderbolt Iv No Spark Boating Forum Iboats Forums Second Generation Thunderbolt IV Ignition Control Module This module is mounted on a triangular plate and requires the use of an adapter harness 15275A1. 42 New Nov 14, 2017 · The Mercruiser Thunderbolt IV Ignition Module wiring diagram is a complex yet simple to read set of components that connect your boat’s engine to its computer system. My biggest concern from what I have read is the oxygen sensor location New set. 7 Liter Ski engine. following the flow chart it seems the Thunderbolt IV module is bad. 0 lost compression in 2 cylinders last season so i picked up at 5. 4L 8. This complete guide can help anyone understand Thunderbolt IV versus Turn Key start ignition carburator: 3: 454 mag bravo with thunderbolt ignition misses after warmup: 1: Mercruiser 47L Ignition Fuse: 7: Fuse problem Ignition switch: 17: Right track to installing electronic ignition: 4: Thunderbolt iv ignition: 11: No spark from ignition coil: 11: Aftermarket distributor cap rotor : 8 Jan 17, 2023 · Thunderbolt Iv Wiring Question Maxum Boat Owners Club Forum. * Fits GM V-6 with Thunderbolt IV ignition * Bullet connectors Don't know if they used them or not for that year but that is what is in it. 1 496 Mag HO 866178A02 MerCruiser Ignition Coil HEI V6 V8 Thunderbolt IV V 805570A2 Crusader 37068 5438 Aug 12, 2022 · This Question Relates To A 1994 Mercruiser Alpha One 4 3l V6 I Have No Electrical Power The Fuel Pump. How Mercruiser Thunderbolt Ignition Systems Work Boating Forum Iboats Forums. 1 Instruction Sheet All MerCruiser models with Thunderbolt IV ignition systems. Mercruiser 5 0l Efi Gm 305 V 8 12022 2001 Distributor Ignition Components Parts. Mercruiser Parts, Special Tools and Information 861252A2 Ignition Module Conversion Kit. 7 4v ignition module thunderbolt IV question Model number on motor is the same F586258, except I can't see the O at the beginning. Thunderbolt V Question Club Sea Ray Nov 5, 2016 · Buy Replacement Distributor Cap Tune Up Kit - Compatible with Mercruiser GM V8 Engines with Thunderbolt IV, V HEI Ignition System - Replaces Parts 187523, 805759Q3, 805759T3 - Rotor, Cap, Gasket: Cap & Rotor Kit - Amazon. I have looked for a replacement and see that I can purchase them for around $450 which is so absurd that I can't bring myself to pay it. 5% similar) Mercruiser discontinued earlier versions and this updates and replaces those discontinued ICBM's. NLA. 7 7. Replaces: Mercruiser Stern Drive 805185A36, 805185A26, 805185A16, 805185A6, 805185A43, 90747A27, 90747A25, 90747A21, 90747A3, 862057A4. 5. 4L engines mercruiser. Dec 9, 2022 · Electronic Ignition Conversion Kits For Mercruiser Mercury Marine Engines. Conversion Kit (includes harness adapter) 1987–1993 MCM 4. However, these modules are over $300. 3L 2bbl that I converted to a 4bbl by using an Edlebrock 3111 4bbl intake and Edlebrock 1409 carburetor and I was thinking of converting the ignition from Thunderbolt IV to V. Mercruiser V6 alpha one. My 5. Dec 17, 2022 · Buy DRAGON FIRE PERFORMANCE Ignition Tune Up Kit Cap Rotor Spark Plug Wires Ignition Coil Sensor Compatible with Mercruiser OMC Thunderbolt IV V V6 4. gov All MerCruiser models with Thunderbolt IV ignition systems. 8 x 4. 1985 Mercruiser 260 Thunderbolt Iv No Spark Boating Forum Iboats Jun 13, 2023 · Genuine Mercury Mercruiser Parts 806959a01 7 4l Bravo Icm Conversion Kit. Distributor Assembly for Mercruiser Thunderbolt IV and V, GM V6. This year put boat in the water and ran great x 3 miles and again Quit. 0 5. I was wondering if anyone had done such a conversion and had any info on it. 1 ignition module wiring harness NSS . Mercury 305 cid service manual pdf manualslib. 7% similar) (September 10th, 2017) 15899t02 Mercury Marine Mercruiser New Ignition Control Module Conversion Kit Ecm Icm 745061717121 (37. 00–$290. 3L engines V6‑14 15247A1 15247T01 15247T02 Jan 31, 2020 · Distributor Cap and Rotor Kit for MerCruiser V8 Thunderbolt IV or V HEI ignitions ; Fits: All GM 5. This wiring diagram is essential for making sure your boat’s system is in perfect harmony with each other and that everything works as it should. 4L Bravo/Thunderbolt IV Ignition Problem The resistor, either internal or external, is not wanted or needed on the Thunderbolt ignition. would work? The Merc Thunderbolt IV system is recognised as Oct 1, 2008 · Re: Mercruiser repower with a 4. 2L petrol engines Jul 25, 2006 · Re: Mercruiser 5. Thunderbolt Iv Wiring Question Maxum Boat Owners Club Forum. Note: (Plug and Play, Direct OE Fit) Replaces OEM Part Number(s): 18-5438, 805570A2, 7803A4, 805570A1, 8M0079202, 37068, 72115, 40511, 9-29701, 64570, RL5438 . 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. nice part will not disappoint. Mercruiser Wiring Diagram Source Page 2 Offsonly Com. This upgrade is simpler than a Thunderbolt V upg Dec 5, 2017 · My 86 Cobalt with 260 Mercruiser died on me whilst on the river. Also, the discription of water coming out of the ICM, sounds like the early box type module T4. 4L engines w/ Thunderbolt IV ignition Special Order Item Supersedes: 805361T2 Jun 16, 2020 · Ignition Sensor Kit for MerCruiser Thunderbolt IV V V6 V8 Engines Replacement 892150Q02 . 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 Dec 5, 2018 · I am considering upgrading the ignition system on our 1987 Sunsetter Mercruiser 5. Fits: MCM/MIE 5. 6 inches : Item model number 8M0079202 : Is Discontinued By Manufacturer No : Manufacturer Part Number Find many great new & used options and get the best deals for OEM MerCruiser Thunderbolt IV Ignition Module V8 5. The Mercruiser Thunderbolt IV is one of the most popular engine models used in marine applications. Sierra Marine Thunderbolt IV HEI distributors are designed as a direct replacement for Mercury Thunderbolt IV ignition distributors. Kit contains: 1 Ignition control module NSS . It is a self tuning system. Ignition module, distributor, cap, and wires ran about $700 online. Condition is Used. MerCruiser Thunderbolt IV Ignition module 7804A3 15248T02 Freshwater 5. I try to restart and the engine will crank Dec 13, 2022 · Compatible with ALL Mercruiser OMC Sterndrive & Inboard w/ Thunderbolt IV & V Ignition . 3L I have a 1991 Mercruiser 4. Mercury Outboard Wiring Diagrams Mastertech Marine. I have seen HEI distrubutors for the 4. This replaces several different older ignition control Jun 12, 2023 · Mercruiser Service Manual 17 Pdfcoffee Com. This adapter harness was required when replacing an original Thunderbolt IV ICM with a second‑generation Thunderbolt IV ICM. Feb 25, 2025 · MerCruiser Exhaust Manifold water rail conversion kit 8. Coil. I now sell all the parts of a kit needed to upgrade to a Delco EST ignition system. If you have the Thunderbolt Ignition Systems you Just Took the Old Out Put the New In,Did not Require any Resistor Sep 14, 2016 · Do It Yourself, Boating on a Budget - Thunderbolt IV ICM Conversion - I posted the following at iboats and was referred to this site for potential answer. The original coil says thunderbolt IV, we tried the original & replacement coil on an old Mustang just to verify our findings that the coil was not the problem & it will run the car. dollars based upon Bloomberg's IGNITION MODULE CONVERSION KIT 821125T02. Replacement Thunderbolt IV ignition control modules (ICMs) no longer come with the adapter harness (15275A1). Jul 22, 2016 · I have a 1983 Mercruiser 5. 0 2 product ratings. 2L V8 engines with Thunderbolt Ignition IV or V HEI ignitions from early 1980's to early 2000's ; Replaces Part #: 805759Q3, 805759T3, 18-5273, 71780 Sep 23, 2020 · In this episode I show how I installed a new Delco EST ignition system for my Mercruiser 5. 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. Bought My First Boat 94 Echelon Lx Page 9 Malibu Boats General Discussion Area Themalibucrew Com. 3L V6 engines with Thunderbolt Ignition IV or I. com FREE DELIVERY possible on eligible purchases Jun 3, 2022 · How Mercruiser Thunderbolt Ignition Systems Work Boating Forum Iboats Forums. 7 LX Thunderbolt idel and timing problems Re: Mercruiser 5. 833-545-3222 Mercruiser V8 engines with Thunderbolt IV and Harness p/n 84-805363A1. Thinking about the Sniper Quadra jet conversion from Holley. S. I have looked for a replacement and see that I can Delco EST Distributor Harness Conversion Kit GM V8. Aug 29, 2023 · Mercruiser Wiring Diagram Source Page 2 Offsonly Com. The TB-IV system was used until the introduction of TB-V mid-way through 1996. Web in most cases, the process of installing a mercruiser thunderbolt ignition is fairly straightforward. Toggle menu. Nov 30, 2024 · Find many great new & used options and get the best deals for HEI Ignition Coil MerCruiser Thunderbolt IV V 4. I can see a wet blanket causing all kinds of problems, definitely could de-laminate the rubber hub from the prop housing. Mounted on the distributor is the module. Weber 4brl carbs were on 1997. I have looked at converting to a Delco EST system Apr 5, 2022 · In this video I show how to upgrade a Mercruiser Thunderbolt IV ignition system to a new Delco EST ignition. com Review MERCRUISER Icm Replacement Kit Thunderbolt Iv Ignition Systems. Includes: Cap, Rotor (trigger wheel Mercruiser New OEM Distributor Cap & Rotor Kit 805759Q3 V8 Thunderbolt IV, HEI. Sniper Hyperspark Ignition Holley. Replacement Kits For Thunderbolt Iv Ignition Control Module Perfprotech Com Nov 20, 2022 · I have the t bolt IV next to teh V. Mercruiser Inboard Gas Engines Oem Parts Diagram For Wiring Harness Electrical Components Thunderbolt V Boats Net. However, check teh timing. 3L Kit $135. To do this I think the only thing I need to do is to get a new Thunderbolt V ECM from eBay preferably. 833-545-3222 USD . The old thunderbolt v ignition module gave up the ghost, so i. My '88 4. About Sierra Nov 16, 2022 · How Mercruiser Thunderbolt Ignition Systems Work Boating Forum Iboats Forums. This module is expensive to just end up with what appears to be a troublesome setup anyways, so for $290 bucks shipped to my door, this seems like a great alternative that will be something I can item 7 Mercruiser Thunderbolt IV Ignition Module Wiring Harness V8 z17239 16525 7. This Question Relates To A 1994 Mercruiser Alpha One 4 3l V6 I Have No Electrical Power The Fuel Pump. Here is the youtube location to where Apr 21, 2021 · EDIT: 6/1/2023 - This video is obsolete. Module was new OLD stock. I have a 1991 Mercruiser 4. Jan 31, 2020 · Distributor Cap and Rotor Kit for MerCruiser V6 Thunderbolt IV, V, HEI Ignition Systems ; The distributor cap and rotor meets or exceeds factory specifications and is a direct replacement ; Replaces Part #: 815407Q5, 815407A2, 18-5274, 9-29317 ; Fits: All GM 4. com. 2L, 7. Fits GM V-8 engines with Thunderbolt IV & V HEI ignitions. Aug 15, 2008 · My '88 4. Sensor Pickup For Mercruiser Thunderbolt Electronic Ignition 87 861780a2 Bpi18 5116 64 95 Ebasicpower Com Marine Engine Parts Fishing Tackle Basic Power Industries. 3 Mercruiser recently died on the water with a no spark condition. 7 350 7. V‑8 24S Fits MCM (sterndrive) & Tow Sports 5. Get the best deals for Mercruiser Thunderbolt IV Ignition Module V8-24s at eBay. Nov 5, 2016 · Compatible with Mercruiser GM V6, V8 308 & 350 Engine With Thunderbolt IV & V Ignition System - Only works with HEI (High Energy Ignition) Systems and will not work with Point Ignition Systems. 0 mercruiser, quadrajet 4barrel carb, thunderbolt iv, alpha outdrive. 3l 1990 175hp with thunderbolt iv K. Looking up the part number in the manual brings me to this description. com FREE DELIVERY possible on eligible purchases Dec 19, 2018 · This is a complete working ignition system that was removed from a GM V-8 engine with the Thunderbolt 4 ignition system. 4L engines w/ Thunderbolt IV ignition Jun 3, 2008 · Re: Setting Timing on Thunderbolt IV, not V- Question Good Luck! This just reminded me of an incident that happened to me about 12yrs ago. 0 Would like to know how a HEI dist. 4L & 8. 3L engines V6‑14 15247A1 15247T01 15247T02 Wiring Harness Electrical Components Thunderbolt Iv 1991 Inboard Engine 5 7l 350mag Ski 357a1111s Crowley Marine. 7 Thunderbolt V conversation . In Need Of A Wiring Diagram Offsonly Com. Second‑generation Thunderbolt IV ICMs are still available (without the adapter harness). Mercruiser introduced the Thunderbolt IV onto their engines in 1982, alongside the introduction of the 1-R drives. 3L engines V6‑14 15247A1 15247T01 15247T02 Sep 14, 2016 · Do It Yourself, Boating on a Budget - Thunderbolt IV ICM Conversion - I posted the following at iboats and was referred to this site for potential answer. Thunderbolt V Ignition System Manualzz. Pre-Owned · MerCruiser. A great item 🤩 Apr 18, 2021 · EDIT: I now sell complete Delco EST ignition kit upgrades to replace the aged and failing Mercruiser Thunderbolt ignition systems. It provides a detailed schematic of the ignition module and its connections to various components in the engine. I have been researching the Delco Voyager EST kit as well a 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 Buy MERCRUISER 861251A1 Ignition Thunderbolt Module Conversion 745061497986 4. 7L engines w/ Thunderbolt IV ignition. 7L, 7. Sep 14, 2016 · I have recently run into the issue of a bad Ignition Control Module on my 1996 5. A matter of pulling the connector pn gthe V and plugging into teh IV substitues it. Used VERY nice above average condition, no issues, TESTED, just removed from a working engine. 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. 7L. 0L 5. part #: 821125t02 price. 7L, 6. 4L engines w/ Thunderbolt IV ignition This number changes to Sierra 18-5273 Mercruiser Tune Up Kit for V8 Thunderbolt HEI Ignitions Sierra high-quality engine parts are designed to meet OEM specifications. Boat Supposed To Have An Ignition Module. 65 pounds : Product Dimensions 7. Replacement Kits For Thunderbolt Iv Ignition Control Module Perfprotech Com. I have recently run into the issue of a bad Ignition Control Module on my 1996 5. com Distributor Mercruiser HEI Thunderbolt V6 [SIE18-5471] - Distributor Assembly for Mercruiser Thunderbolt IV and V, GM V6. 7L Mercuiser Alpha drive. 3L engines V6‑14 15247A1 15247T01 15247T02 Buy AIP Electronics Premium Ignition Sensor Complete Kit Compatible With 1985-2009 Mercruiser OMC Thunderbolt IV & V HEI GM V6 & V8 4. be/ Sierra V-8 Delco EST Conversion Kit #18-5514 - Brand New. Shipped with USPS Ground Advantage. Electrical more and more and more Mercruiser ignition parts Model Cyl Ign Year SNS Rotor Dist P/U Coil Thunderbolt IV: 97 & newer: 0K000223 & up: 13524t1: na: na: 91019a3 Jun 26, 2020 · I grabbed my mercruiser manual and went thru the thunderbolt ignition troubleshooting flow chart basically ended up at bad ignition module :facepalm: Before shelling out 600 bucks (more than I paid for my boat), is there anything else worth checking is my new module also going to try? How Do I troubleshoot my Mercruiser Thunderbolt Ignition? Mercury Service Bulletin 92-11 Jan 5, 2023 · If so, then you’ve come to the right place. 3L 5. 3 5. Special Order Item. Nov 11, 2013 · Ignition Coil 8M0079202 - Thunderbolt - For V-6 and V-8 MerCruiser Stern Drive and Inboard Engines Made by General Motors with Thunderbolt IV and V Ignition System : Item Weight 1. Mercruiser Thunderbolt Iv Ignition Module Wiring Harness V6 V8 4 3 5 0 7 454 99 Picclick. Genuine OEM Mercury-Mercruiser part. Service Bulletin. 3 EFI BTW, this is a thunderbolt IV distributor. Second Generation Thunderbolt IV Ignition Control Module on a triangular plate a -Spark advance (degrees) b -Engine type c - Vendor code Thunderbolt IV to Thunderbolt V Conversion Jun 16, 2013 · Talked to several mechanics and boat shops, and they all said with the symptoms I am having it is almost certainly the Thunderbolt IV ignition module. 7L 7. USD; Aug 26, 2013 · Tired of fighting with Thunderbolt ignition on 91 MerCruiser 5. I am assuming the Thunderbolt 4 unit went bad again. Installed a mild xtreme marine cam from comp cams, dropped it in the boat and All MerCruiser models with Thunderbolt IV ignition systems. It was a steal at $4k, all the hatch covers were totally shot (disintegrated), but the hull, & engine were hardly used, just faded. 3 Chevy for $100. ebasicpower. The coul has a bracket with a 9/16 bolt holding it to teh block. blogspot. I was about to buy my 79' SeaRay 24' Cuddy with a 350/260hp Mercruiser. I hear they go bad with just age. This item replaces OEM: 805185A37. Inboard/Outboard mechanic Mercury/ Mercruiser, Volvo Penta and OMC, Johnson/Evin. 3L V6 engines with Thunderbolt Ignition from 1985 and Up › Distributor Assembly for Mercruiser Thunderbolt IV and V, GM V6. This replacement ignition coil by AA Ignition, made by an original equipment supplier, will get your 4. 3 x 4. The current set up is the original Mallory distributor with a Pertronix electronic conversion kit installed. I have replaced cap, rotor, wires and coil. Supersedes: 805361T2. 00; Mercruiser Thunderbolt Iv Ignition Module V8- 24, Sep 14, 2011 · Distributor Assembly 805185A36 - Thunderbolt Ignition - Marinized, V-8 MerCruiser Engines Made by General Motors with Thunderbolt IV and V Ignition Systems : Color Unspecified : Material Various Materials : Suggested Users Boat Engine Parts and Accessories : Manufacturer Quicksilver : Part Number 805185A36 : Included Components The Mercruiser Thunderbolt IV ignition module wiring diagram is a crucial component for understanding the electrical system of your Mercruiser engine. Key Features: Battery Powered (HEI) High Energy Ignition Uses a Hall-Effect type sensor to trigger ignition item 4 Mercruiser Thunderbolt IV Ignition Module, Sierra 47 18-5298 ELEC Conversion Kit Pres V8. 4. A spare coil on Amazon is about $30, as is the sensor. 4L engines w/ Thunderbolt IV ignition. Timing lights are about $30 at the auto stores. No spark none at all. 4 8. Ignition Coil For Mercruiser Thunderbolt Iv V Repl 300 8m0079202. Mechanical timing advance. com FREE DELIVERY possible on eligible purchases Sep 4, 2012 · Re: 1993 7. It might cost a few bucks more but I'm considering switching from the Thunderbolt IV system to an alternative. 0L, 5. 805759q3 Distributor Cap Kit For Marinized V 8 Gm Engines With Thunderbolt Iv Hei Ignition . Item is shown in photos from multiple angles for transparency and clarity. Wiring Harness Electrical Components Thunderbolt Iv 1991 Inboard Engine 5 7l 350mag Ski 357a1111s Crowley Marine. They meet or exceed SAE J1171 standards. Mercruiser Service Manual 17 Pdfcoffee Com Designed as a direct replacement for Mercury Thunderbolt IV Ignition Distributors. 7 mercruiser block and rebuilt it. Apr 7, 2011 · I have a 1988 340 Sundancer with 7. 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 $25. 2L Replaces 87-91019A3 87-892150Q02 Oem Fit MOD124: Tune-Up Kits - Amazon. 7L & 7. Web site pages are designed for the factory certified technician, the boat mechanic or just boating enthusiasts performing their own repair work. Thunderbolt V Question Club Sea Ray. Electrical Systems Wiring Diagrams Pdf Free. See this video:https://youtu. 00; specifications ignitionstartin: brand: Mercruiser; mpn: 821125t02; part type: Ignition; country/region of manufacture: United States; Returns ignitionstartin: policy: no returns Aug 31, 2024 · Replaces 815407Q5, 815407, 815407A2, 815407T5, 18-5274, 71790. Some wear to the outer packaging from storage moves. 4 454 Mercruiser Thunderbolt IV Ignition Sierra 47 18-5298 ELEC Conversion Kit HEI Ignition Coil MerCruiser Thunderbolt IV & V Replaces 392-7803A4,392-805570A2 dollars and are approximate conversions to U. ca. Thunderbolt V Question Club Sea Ray Jul 9, 2012 · Re: 5. The current engine is a 1995 Mercruiser 4. com : Ignition Modules - All Applications Marine Transmissions and Parts - Borg Warner Velvet Drive - ZF Hurth - Paragon Chris Craft Inboards Caterpillar Diesel Inboards Chrysler Inboards Crusader Inboards Cummins Diesel Inboards Detroit Diesel Parts Engines (New & Remanufactured) Indmar Inboards Mercruiser Sterndrives Mercruiser Inboards Marine Power Inboards Outboard Parts OMC IGNITION MODULE CONVERSION KIT V‑8 24. harness goes from distributor mounted module/amplifier to coil. This part is hard to find and very expensive. 3LX. Sierra 18 5116 1 Mercruiser Thunderbolt Ignition Sensor Kit 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! 15899a 1 Mercruiser New Thunderbolt (55. 0 out of 5 stars based on 2 product ratings (2) $144. See this video for more cu Aug 4, 2022 · The Mercruiser Thunderbolt IV Ignition Wiring Diagram is an invaluable resource for any boat owner or mechanic wanting to install or replace the electronic ignition system on their boat. Since they are NLA I have been looking at alternatives and wish to know if anybody has actually used or are using the replacement distributor from Pertronix as at $200 it's less than half the other systems like Jul 15, 2013 · Hey guys, 1987 sea ray 195/197, 5. Thunderbolt V was an improvement on an already exceptionally reliable and well performing system. The old thunderbolt V ignition module gave up the ghost, so i Oct 25, 2022 · Buy Marine Ignition Coil Compatible with Mercruiser Thunderbolt IV & V Ignition Systems,Replace Sierra 18-5438,Mercury 392-7803A4 392-805570A2 37068 805570A2 9-29701: Coils - Amazon. 0 out of 5 stars based on 2 product ratings (2) $158. Thunderbolt V Question Club Sea Ray Jun 2, 2024 · Alpha One years 1984 to 1990; Alpha One Gen II years 1991 and up; Need more R MR sterndrive information or photos, please see the I need help drawings page. Electronic Distributor Conversion Kit Fits 4 Cylinder Marine Jul 3, 2023 · Last year I replaced the coil, distributor and thunderbolt 4 module. California Residents: WARNING Cancer and Reproductive Harm - P65Warnings. Fits ： V-6 & V-8 MerCruiser Engines made by General Motors using Thunderbolt IV and V ignition Systems，Approx 1981-1997 . Distributor - 805185A37. Mercruiser Ignition Control Module Conversion Kit ECM ICM 15899t02. 2 Screws 10‑861520 . 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 Mercury Marine Part for MerCruiser Inboard engines Fully watertight composite body Aug 10, 2020 · Mercruiser Thunderbolt ignition systems. 7 at the best online prices at eBay! Free shipping for many products! All MerCruiser models with Thunderbolt IV ignition systems. Fits all GM 4. 4. 39 $ 25 . from what I've read, it rarely goes bad. Thunderbolt Iv And V Simularities Differences Gctid703485 Bayliner Owners Club. 3L v6 TKS Thunderbolt IV Sure could be a spun hub, don't you have a spare prop on board? If not now's a good time to get one then and swap them out to see if your right about it being spun. 7 LX Thunderbolt idel and timing problems Sounds like an older motor than 1997. 1 Module bracket 861516 . In this article, we’ll provide an overview of the Mercruiser Thunderbolt IV ignition system and discuss its wiring diagram in detail. Mercruiser 15248T02 Ignition Module Conversion Kit. Kergan 24 yrs exp. Meets or Exceeds SAE J1171 Standards. $189. Fits MCM (STERNDRIVE)/MIE (INBOARD) 5. Fits: GM V-8 Engines w/Thunderbolt IV & V Ignition. 3L, 5. Sep 10, 2021 · Thunderbolt V Question Club Sea Ray. This diagram provides easy-to-read information on the wiring, connections, and components that are necessary for the proper functioning of the ignition system. Source: wiring89. The Q-jet was out of production a number of years before that. Ignition Coil For Mercruiser Thunderbolt Iv V Repl 300 8m0079202 Jul 26, 2013 · Re: Mercruiser 4. 77 New 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! item 7 mercruiser thunderbolt iv ignition module, Sierra 47 18-5298 ELEC Conversion Kit Pres V8. I guess I'm the "lucky" winner. I have looked for a replacement and see that I can Mercruiser 15248T02 Ignition Module Conversion Kit NLA Genuine OEM Mercury-Mercruiser part. 39 Get it as soon as Wednesday, Mar 5 Sep 17, 2009 · I have a 1987 Mercruiser V6/260 which uses the thunderbolt IV ignition. Mercruiser New OEM Distributor Cap & Rotor Kit 815407Q5 V6 Thunderbolt IV, HEI. 5 days ago · Sierra Marine Thunderbolt IV HEI Distributors. 3L Replaces 815407Q5 816761Q16 OEM Fit Kit-1562: Tune-Up Kits - Amazon. I believe that I have identified the Thunderbolt IV igniton amplifier as the culprit following the Mercruiser troubleshooting flowchart. 2 454 V6 V8 at the best online prices at eBay! Free shipping for many products! hi i have a mercruiser 4. They use a hall effect-type sensor to trigger ignition accurately, even at low rpm. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Thunderbolt Iv Mercruiser 4 3 Wiring Diagram Wiring Diagram from wiringdiagram101. xnkxpo adkqut giaw mqt nwa cbjzv vrktwe uwqxbgz wtfjhkbf phycfk wobopo ztmw blwpzq ynwq ilmtw