The Thunderbolt Ignition system was designed by Mercury Marine. This module is mounted on the exhaust elbow and has an aluminum housing. Use Quicksilver 91-818812A1, or fabricate a jumper wire using a 6 in. Motors, Fishing Downriggers & Hitches, & The TB V module has logic that then grounds the tan/ blue wire to turn on the over temperature alarm at a specific temperature. & Thanks for the help. Chalk or white paint on timing marks may help visibility. Hardware, Boat Seats by Connect power supply leads, if applicable, on light to 12 volt battery. . How Easy Is It To Bypass The Cars Ignition Control Module And Start It? I replaced the the coil already and the new sensor in the distributor is Sierra brand. Connect timing light (91-99379 or similar) to No. The best source for Mercruiser OEM parts, marine engines, boat & engine Hardware, Boat Trailer Downs, Couplers, Mounts, But, it is important to use it. If you bypass the ICM, it can be very dangerous for you and others. You have 2 bad sensors or your not connecting the ground wire, OK. Installed cap,rotor,plugs,wires, and ignition sensor. & Rings, Prop Nut Kits & from module, but only 3 volts on the White/red wire on side of dist. An important reminder, dont short anything. Handles, Life Jackets & Thanks for the good advice to all. Bilge Pumps, Shop (Thunderbolt V Ignition) 1. To bypass the ICM and start the engine, touch the solenoids positive terminal with a metal tool like a screwdriver, and connect it to the terminal where the ignition switch wire was previously linked. 9. Assume you own an older vehicle that has developed a mechanical ignition system. Covers, Boat Wiring & Dont attempt to tamper with the ignition system unless you have the proper training or knowledge in automotive electrical systems. Refer to Specifications Engine Rotation and Firing Order for cylinder numbering and location. I am also noticing the volt gauge and tach are acting "jittery". The wire that reads 12V when the ignition switch is off should go to the positive terminal. Hardware, Boat Cabin However, if problems persist, its best to consult a professional mechanic or auto electrician for diagnosis and repair. A good radio will take care of the rest. Starters, Marine Solar Power Boat, Sell A The new rotor needs to be lock-tited on. I have a green/white and a red/white wire coming out of the distributor. Be good, be happy, for tomorrow is promised to no man ! enjoy your boat- and let boat fix handle the stress Troubleshooter, security guard, systems monitor Boatfix does it all. ACCOUNT, Find You will most likely have to destroy it to get it off. With the ignition switch still in the off position, these wires should not read any voltage. Terminals, Marine Fuse Blocks & Zincs, Generator All, Boat Bimini Stop the engine and remove the timing light. Copyright 2019 IBOATS. 7. // ]]> The best source for Mercruiser OEM parts, marine engines, boat & engine Troubleshooting the Thunderbolt IV is pretty simple and can be done with just a test light and a spark tester on the dist end of the coil wire. Products, Carbon Monoxide & Yea, the sensor seems to be the majority of ignition issues I see. I have a green/white and a red/white wire coming out of the distributor. So that pretty much means it's gonna be the Module. Your vehicles computer may cause the check engine light on your dashboard to turn on if theres a problem with the ICM, typically related to a misfire or ignition issue. Remove jumper wire at distributor white leads. Anchor Box Anchors, Fishing Rod & Reel Aim timing light at timing tab and recheck location of timing mark. Once the cable is loose, remove it from the battery terminal and keep it aside. 1. The yellow and brown wires are for the ignition. Adjust timing by loosening distributor clamp and rotating distributor body as required until timing mark on damper or pulley lines up with the mark on tab specified in Specifications. Tighten clamp and recheck location of timing mark. & Circuit Ropes, Boat How To Identify The Wires Within The Ignition Switch To Bypass The Control Module, Steps To Identify The Wires Required To Bypass The Ignition Control Module, Ways To Bypass The Ignition Control Module And Start A Car With A Bad Ignition Switch, How To Bypass Ignition Control Module Through Hotwiring, How To Bypass Ignition Control Module Through Jump Starting A Car, How To Bypass Ignition Control Module Using A Drill And Screwdriver, Electronic Spark Control Module Bypass Full Guide, Passkey III Theft Deterrent Module Bypass Full Guide. The red wires are related to the battery. Originally posted by milkyway:
I prefer the socket wrench on the pulley. I believe tbolt 5 is similiar. If you had spark from the the coil wire to the distributor cap, your loosing spark inside the distributor cap. On 350 Mag MPI Model, engine RPM will automatically increase to a higher RPM. To remedy this issue you must follow the procedure in Part 4b of this series to replace the thermistor with a temperature switch, Mercruiser part 48952. 1. When you get to the step where you remove the white wire with green tracer from the negative side of the coil you are bypassing the hall sensor in the distributor and signaling the ignition module to fire the coil. Shop Jacks, Boat Trailer Brakes & How do you know it has no spark? Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! Aim timing light at timing tab, located on the timing gear cover and crankshaft torsional damper. Supplies, Boston Whaler, 1972-1993, Racks, Fish Finders, Sounders I did a tune up on my '89 with a 350. In very uncommon situations, such as being stranded in a secluded location, it may be necessary to bypass the ICM in order to start the vehicle and reach a safer place. Biminis, View Boat Gel Coat - Spectrum Color, Pumps and Hardware, Boat Accessories, Big Jon Varnish, Marine Adhesives, He has been writing for multiple sectors and is a regular contributor to several publications. New module and harness kits are available as service replacement parts for the original Thunderbolt IV ICM. Yep, the ign. Towers, Tow Ropes & Oars, Wakeboard, Wakesurf & Professionals. First, you need to identify your cars steering wheel column. I like the ground jumper idea and will give it a try later. If they sent you a 6 cyl you can take the wheel off your old rotor if you still have it. Thought it was the ignition sensor but swapped that out and still no spark. Maintenance, Boat Cleaners & I am also noticing the volt gauge and tach are acting "jittery". See this video showing my new bracket and how to order.https://youtu.be/PkusGQYEvUE There is also a V8 kit and it is installed just like the V6 kit. & Rings, Prop Nut Kits & Afterward, take out the ignition wire from the ignition control module. Telescopes, Covers and Accessories, Electronic Navigation Now the triggers come from China, and they are junk. We highly recommend you consult an expert if youre unsure whats making your car not start. Can it be the reason I am having hard starting? Marine Battery Chargers, Shop Additionally, there may be an increase in exhaust emissions. Check that you have a good clean ground from the Thunderbolt ignition boxhad that problem once. However, please note that the overall expenses may differ based on several factors such as the vehicles make and model, the type of ICM, and the repair shops location. Deals, Paint & Maintenance Insurance, Boat The good news is that you can use ways to bypass the ignition switch and start your car. Second-Generation Thunderbolt IV Ignition Control Module This module is mounted on a triangular plate and requires the use of adapter harness 15275A1. Furthermore, bypassing the ICM may cause other ignition components like spark plugs, ignition coils, and distributor caps to fail early. Once the cable is loose, remove it from the battery terminal and keep it aside. Boat Repair, Boat Paint & Use a voltmeter to do this. Reconnect the two wires to the shift interrupt switch. Accessories, Marine Electrical Biminis, RV & Trailer 3. Well here I sit almost got to a good spot to spend the night when the starboard engine decides to quit. Systems, Marine Plumbing How Do I Know If I Need a Bypass Module for a Remote Start? Acessories, Fishing Outriggers & Breakers, Power Packs & Jump Boarding, Paddles & Well, follow these simple steps below. Caulking, Marine Engine lead to the white/red wire terminal at the dist. This module is mounted on a triangular plate and requires the use of adapter harness 15275A1. Connect your voltmeter neg. It cranks the regular way but just won't start right away. Rafts, Paddle Still scratching my head as to why it didn't spark originally but I appreciate all the feedback and encouragement. Find many great new & used options and get the best deals for MerCruiser Thunderbolt IV Ignition Module V6-14 4.3 at the best online prices at eBay! http://marinemechanic.com/Workhorse/index.htm. Biminis, RV & Trailer Helm Seats, Shop For a better experience, please enable JavaScript in your browser before proceeding. If it is the sensor, when you order it, get a rotor too. Connect timing light (91-99379 or similar) to No. Used to be a good piece, then merc quit building the triggers. Repeat Step 7 until timing is correct. Find the negative terminal on the battery and loosen the nut holding the cable using a wrench or pliers. Forums, Find Tags: ICM, Mercruiser ignition module, Thunderbolt. (Solved), GM 2.7 Turbo Engine Problems Are Not as Serious as Youve Heard, Car Idles Fine But Dies When Given Gas (Solution), P04DB Crankcase Ventilation System Disconnected (Causes and Fixes). lead to the white/red wire terminal at the dist. It is a very powerful and reliable ignition system. Covers, Boat Seat As Carlos said, are you sure your loosing spark? 8. Cushions, Lexington Remove the white/green lead from the dist. Tackle Boxes, Fishing Bait & Fenders, Boat Trailer Grills, Boat Drink Storage Get the jump starter cable. Remove timing light. 7. I just click. Wells, Toilet & Waste & Sonar, Trolling It will make the dashboard get some power required by the car to ignite the engine. Boats, Propeller Parts & Combos, Fishing Tools & Plumbing, Anchor This method can be used to bypass the ignition control module but can ultimately damage it. lead to the engine ground and pos. Verify that timing did advance to 12o BTDC, plus or minus 2o. Besides the primary symptoms, other signs of a faulty ICM could be trouble starting the car, reduced engine power, engine surges, and unusual engine noises. Start engine and run at normal idle speed. The next step is to find a way to bypass the ICM. If adjustment is required, adjust timing by loosening distributor clamp and rotating distributor body as required until timing mark on damper or pulley lines up with the mark on tab specified in Specifications. The yellow wire actually goes to a thermistor temperature sensor which provides the temperature to the Thunderbolt V module. To accurately diagnose the problem, you can temporarily bypass the ICM and check the voltage at different points within the ignition system. Electrical surges happen when the electrical current suddenly surges, leading to failure or a fire in electrical components. To bypass the ignition control module, connect the car on/off the ignition wire with the wire that connects to the battery. (150 mm) section of 16 gauge wire with two male bullet terminal ends connected. Thunderbolt IV Problem | Powerboat Forums at SpeedWake Connect timing light (91-99379 or similar) to No. 13. Accessories, Pontoon Bimini Your goal here is to identify the wire that reads 12V. Turn ignition key to OFF position. lead to the engine ground and pos. The dealer wanted over 600 bucks to replace and program the win mod. After getting them, you are ready to bypass the ignition switch using the following easy-to-follow methods. Connect power supply leads on light to 12 volt battery. A bad battery can make your car not start when you ignite it. 3.0L Models Only The methods of bypassing the ignition control module shared in this guide should help you do so. Covers, Boat Cover Boat Gel Coat - Spectrum Color, Pumps and & Live Bait V6 and V8 Carbureted Models (Thunderbolt V Ignition). Jacks, Boat Trailer Brakes & He currently owns a Nissan 300ZX TT and a Pearl Yellow but plans to upgrade it to 550 HP. Galley, Covers and Dollies, SportsStuff Great Big After determining the timing and duration, the ICM signals the ignition coil to generate the spark that will ignite the fuel in the engine. Protection, Ladders, Steps, & Winches, Boat Motor Supports & Correction New module and harness kits are available as service replacement parts for the original Thunderbolt IV ICM. Here are some articles that you might enjoy: How to Bypass Voltage Regulator on an Alternator, Bypass Ford Fuel Pump Driver Module (How to Bypass), How to Bypass Ford Pats System Without a Key, Why Is My Car Accelerating on Its Own? Todays cars have reliable and efficient solid-state ICMs, which are an upgrade from the older mechanical systems. Tubes, Shop 13. (Solved), 2023 Car, Truck and Vehicle How To Guides - Vehicle Freak, I Hit a Curb With My Front Passenger Side 7 Things to Check, 5 Toyota Venza Years to Avoid & What You Should Know, 17 Epic Marvel Universe Rides That Youll Freak Out About, How Tall Is a Concrete Truck? Put the screwdriver into the keyhole the way you would do the car keys. Removing the tan/blue and yellow wires from the module and connecting them together as I show in the video will cause the alarm to sound prematurely effectively creating a malfunction. High Back Reclining Helm Seat, Cabin and Our port engine sputtered and died a few weeks ago. Can I just hook the green/white to coil negative and the red/white wire to coil positive and run it like a "normal" old school distributor? Real tech, real people, real. The ICM controls the spark during starting and a defective ICM can cause the engine to shut off unexpectedly, particularly at low speeds or when idling. Remove the jumper wire from the timing terminal. Screws, Boat Handles, Pulls, Second-Generation Thunderbolt IV Ignition Control Module. Professionals. no possibility a six cylinder rotor/shutter was put in ,is there. If you now have spark, the problem is with the tach or the shift interrupter switch. ft. (40 N.m). Mercruiser Thunderbolt Ignition parts. Sensor. Ignition module. Brain. It starts all the time but needs 3 or 4 attempts on the ignition switch. Drove me absolutely NUTS trying to find that one the first time! Two items of test equipment are required: an inductive pickup timing light and one of either a Scan Tool, Marine Diagnostic Code Tool or MerCruiser Special Timing Tool (Quicksilver 91-805747A1). Tommorrow I will also test the ignition coil. Thought it was the ignition sensor but swapped that out and still no spark. Any ideas on what i need to check? Shop the PPT Online Store to Buy Mercruiser Engines & LongblocksRead More. (also attached to the - side of the coil). To start the engine, connect the positive terminal of the battery to the positive side of the ignition coil in order to power the ignition system. 2. You must log in or register to reply here. Nonetheless, there may be circumstances that necessitate bypassing it. NOTE: Before starting engine make sure the timing tab and marks on damper are clean. Kits, Seadog Stainless Steel Cup Deals, Trailering Using a metal drill, drill about 2 to 3 inches into the car keyhole. I'll be troubleshooting soon again. Then, open the plastic cover that conceals the ignition wires inside. Wells, Toilet & Waste The Right Fit, Shop By CAN I BYPASS THE WIN MODULE (ignition switch ) - Dodge Cummins Diesel Forum Check the timing. Thanks. You can find the ignition coil and battery under the hood of your car hood. Maintenance, Pumps and Manual however does not state it has to be perfect 12. Rollers, Boat Trailer This page was generated at 01:18 PM. Rule out the basics first. GPS Chartplotter and Fish Finder Combo, Find Just the plugs after 100 hours. Always put safety first and dont try to modify the ignition system unless you have the necessary training or knowledge of automotive electrical systems. Install a Delco EST Ignition on a Mercruiser - YouTube Covers, Boat Shrink Wrap However, doing so can be complex and potentially hazardous. Pumps, Livewell Aerator Pumps Seats, Offshore Boat Refer to Specifications Engine Rotation and Firing Order, for cylinder numbering and location. Therefore, it is vital to prioritize safety and precision when undertaking any repairs or maintenance on your vehicle. Deals, Electrical Battery Charger, Marine Audio & In certain situations, bypassing the ICM can be a short-term solution that enables the vehicle to run until a new ICM can be procured and installed. Winches, Boat Motor Supports & Remove jumper wire between the timing lead (PUR/WHT wire) and ground (-). Thats why its best to consult a qualified mechanic or auto electrician in case of any ignition-related problems, prioritizing safety and accuracy when carrying out maintenance or repairs on your vehicle. If 12 volts is present, remove the coil spark wire from the distributor and connect it to a spark gap tester to ground. Smoke Vinyl, Floating Boat To bypass the ignition control module in your vehicle, you can follow these steps: connect the positive terminal of the battery to the positive side of the ignition coil, locate the starter solenoid and connect it to the positive terminal of the battery, unplug the ignition switch wire from the solenoid, and then short the solenoids terminal where the ignition switch connects. & Live Bait Holders, Cabin Accessories & Other wires serve other functions in the car, including wipers, lights, and other car accessories. Refer to Specifications Engine Rotation and Firing Order, for cylinder numbering and location. Some crucial steps include disconnecting the battery first, identifying the starter solenoid, and testing the engine. Module is part#814295A1 w/22 degrees advance timing. 6. I did run through that diagnosis flow chart yesterday. He is an ASE certified technician with an across-the-board experience of 10 years in the industry. Engine still runs great and cruises 18 to 20 knots at only 3000 rpm. The first step in bypassing the ICM is to find it. Disconnect the battery before trying to bypass the ICM to avoid any electrical surges or short circuits. It may not display this or other websites correctly. Anchor Box Anchors, Fishing Rod & Reel & Copyright 2023 Performance Product Technologies. The ICM also performs other functions such as monitoring the engines RPM, detecting misfires, and providing a signal to the vehicles computer (ECM) to adjust the fuel injection system. Breakers, Power Packs & Jump Deals, Boat Seats Drink Holders. Ventilation, Interior & Cabin (Solved). Indications of a faulty ICM include engine misfires, intermittent or no spark, and reduced performance. I still have not learned how to use a timing light, set dwell, not even how to crank the engine without using the ignition switch. Switches, Shore Power & AC One reason to bypass the ICM is for customization purposes. AN 4. Guide, Boat Aim timing light at timing tab and recheck location of timing mark. However, the steps of bypassing the ignition control module of your vehicle will depend on the car model you own. Such issues can cause long-lasting damage to your vehicle and even pose safety hazards. Dont overdo the locktite as it can run down the shaft and sieze the shaft in the dist. Jeep Traction Control Light And Loss Of Power 6 Reasons, Radar Cruise Control Unavailable Meaning & How To Fix It. IMPORTANT: Be sure to disconnect MerCruiser Special Timing Tool from the DLC connector, or set the tool to NORMAL MODE if using the Scan Tool or Marine Diagnostic Code Tool, before attempting to resume normal operations.
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