Distribution, ProMariner ProNautic Ventilation, Interior & Cabin 2. Engines with secondgeneration Thunderbolt IV ICMs that have a damaged harness will also require the new ICM and harness kit. Boat, Sell A There are certain situations when you might need to bypass the ignition control module. Zincs, Generator Disconnect the MerCruiser Special Timing Tool from the DLC connector. Varnish, Marine Adhesives, A faulty ICM can cause the engine to misfire, leading to a rough idle or loss of power while driving. your boats Gel Coat Match, Shop Acessories, Fishing Outriggers & Parts, Rule 1500 GPH Automatic Then, open the plastic cover that conceals the ignition wires inside. I consider this to be one of the most valuable videos Ive produced on my channel because of the millions of Mercruiser Thunderbolt Ignitions waiting to fail. Oars, Wakeboard, Wakesurf & 11. New module and harness kits are available as service replacement parts for the original Thunderbolt IV ICM. Towers, Tow Ropes &
MerCruiser Thunderbolt IV Ignition Module V6-14 4.3 Has anyone swapped out the thunderbolt ignition with something else? Seats, Offshore Boat goods. It regulates the flow of electrical current through the ignition coil. GPS Chartplotter and Fish Finder Combo, Find For instance, if you want to enhance your vehicles performance by adjusting the timing or installing an aftermarket ignition system, you may need to bypass the ICM. Disconnect the thin wire that goes from the ignition switch to the starter solenoid, which is called the ignition switch wire. Signals from the engines sensors are received and processed by the ICM to decide the best timing and duration of the spark that will ignite the fuel. 6. Biminis, Paint and Rails, Marine Tools & Tool Correction New module and harness kits are available as service replacement parts for the original Thunderbolt IV ICM. Seats, Pontoon Boat Seats & Manual however does not state it has to be perfect 12. 1. Aim timing light at timing tab, located on the timing gear cover and crankshaft torsional damper.
Ignition Module Is Bad on Thunderbolt V? - iboats Boating Forums Helm Seats, Shop Telescopes, Covers and All MerCruiser models with Thunderbolt IV ignition systems. Install a jumper wire between the two WHITE leads on the distributor. Refer to Specifications Engine Rotation and Firing Order, for cylinder numbering and location. [CDATA[ Deals, Electrical However, the steps of bypassing the ignition control module of your vehicle will depend on the car model you own. Systems, Lowrance Hook2-4 GPS parts, accessories, boating supplies, tools, & aquatic sporting Dollies, SportsStuff Great Big lead to the engine ground and pos. (Solved).
Can I Bypass The Ignition Module on a Thunderbolt V? Biminis, RV & Trailer If you own a car manufactured before this period, you can use this method. Aim timing light at timing tab and recheck location of timing mark. Systems, Marine Plumbing (150 mm) section of 16 gauge wire with two male bullet terminal ends connected. from module, but only 3 volts on the White/red wire on side of dist. Connect timing light (91-99379 or similar) to No. Did you check for spark coming out of the coil or spark plug wires at the spark plug end? Module is part#814295A1 w/22 degrees advance timing. Boats, Propeller Parts & Detectors, Binoculars & lead to the white/red wire terminal at the dist. This is what the manual confirmed also. Accessories, PWC Parts & 7. key to on and strike the white/green lead to ground. When new to boating, I always hit at least 4000 rpm, but I wondered what's the rush. On Alpha applications, the shift interrupter switch can also short out the ign system.
5. Other wires serve other functions in the car, including wipers, lights, and other car accessories. Even small changes to the ignition system can lead to injury. Professionals. Tops, Bimini Top EBAY ??? Accessories, Boat Tubes, Shop Thunderbolt IV ignition problem. Tables, Minn Kota Some crucial steps include disconnecting the battery first, identifying the starter solenoid, and testing the engine. Locks, Boat Deck Tighten clamp and recheck location of timing mark. Find the negative terminal on the battery and loosen the nut holding the cable using a wrench or pliers. I dont cover the two module system in my videos but if you are sharp with wiring systems you should be able to figure it out. Login, Boats We highly recommend you consult an expert if youre unsure whats making your car not start. No spark from coil. your boats Gel Coat Match, Shop If 12 volts is present, remove the coil spark wire from the distributor and connect it to a spark gap tester to ground. Deals, Boat Seats Connect the coil's positive side to the car battery's positive terminal. You can find the ignition coil and battery under the hood of your car hood. 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? Software, Digital I am not sure how much the test will do for you since you probably do not have access to parts. Accessories, Boat It's carbed. 3. Covers, Other In most cars, the connector would be situated in the middle of the car steering column. In case you suspect issues with the ICM of your vehicle, it is advisable to seek professional help from a mechanic or auto electrician to diagnose and fix the problem. This module is mounted on a triangular plate and requires the use of adapter harness 15275A1. I am also noticing the volt gauge and tach are acting "jittery". IMPORTANT: Adapter harness (15275A1) is no longer available from the manufacturer. While it may be tempting to bypass the ICM, there are significant risks and consequences associated with doing so that should not be overlooked. I did have 12V at the coil + and. If they sent you a 6 cyl you can take the wheel off your old rotor if you still have it. Waxes, Boat Cleaning Deals, Electronics Pumps, Marine Pump Replacement 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). Hardware, Boat Seat Distribution, ProMariner ProNautic sensor "triggers" the spark and is known by both names.
Replacement Kits for Thunderbolt IV Ignition Control Module Connect your voltmeter neg. Acessories, Fish Cleaning Winches, Boat Motor Supports & Platforms, Slide --- Jer. It is a very powerful and reliable ignition system. 3. Combos, Fishing Tools & Fasteners, Boat Windshield Galley, Covers and Upgrade today to a smarter, safer and more secure boat. First, identify the keyhole. Plumbing, Anchor Your goal here is to identify the wire that reads 12V. Hardware, Boat Cabin Marble, Engine In this episode I show how I installed a new Delco EST ignition system for my Mercruiser 5.7L. Well here I sit almost got to a good spot to spend the night when the starboard engine decides to quit. Outboards, Shop lead to the engine ground and pos. & Instruments, VHF Radios & goods. Real tech, real people, real. Parts, Inflatable Remove the jumper wire from the timing terminal. Such issues can cause long-lasting damage to your vehicle and even pose safety hazards. Stop the engine and remove the timing light. & (And you can try another rotor lots cheaper than a new module) Merry Christmas! You do not have to increase it manually, as stated in the following steps. All, Boat Bimini The ignition control module is one of the components you must always ensure is in good condition. You can also retain the Thunderbolt V module to keep the over temperature alarm functional as is but that will be a messy two module system that I dont recommend just to save $100. Connect timing light (91-99379 or similar) to No. You can also run the jump starter cable to the red wire to the coil. Disconnect the battery before trying to bypass the ICM to avoid any electrical surges or short circuits. Protection, Dock Storage & I put the distributor back together and reinstalled it and she started running. The symptoms of working while cold and not hot sounds like the ignition coil. Blocks, Marine Deals, Camping & RV Yea, the sensor seems to be the majority of ignition issues I see. Rafts, Paddle Professionals. Go ahead and identify connectors that serve the battery, ignition, and starter. http://marinemechanic.com/Workhorse/index.htm. I have 12 volts on the White/green wire on side of dist. Tags: ICM, Mercruiser ignition module, Thunderbolt. The Right Fit, Shop By Seats, Offshore Boat Connect the solenoid to the positive terminal of the battery, which will allow the starter motor to receive power and crank the engine. Electrical surges happen when the electrical current suddenly surges, leading to failure or a fire in electrical components. Fishing Lures, Fishing Rod Holders & Just the plugs after 100 hours. You can find the ignition coil and battery under the hood of your car hood. Caulking, Marine Engine Make sure you have an 8 cylinder tone wheel under your new rotor. Attempting to fix the ignition system on your own can result in permanent damage to your car or injuries to you or others.
How to Bypass Ignition Control Module? - CGAA To accurately diagnose the problem, you can temporarily bypass the ICM and check the voltage at different points within the ignition system. With the ignition switch still in the off position, these wires should not read any voltage. I'll buy a replacement module later. Manual however does not state it has to be perfect 12. Honda 5hp Outboard, Boat 6. terminal. Can it be the reason I am having hard starting? Your car likely has an ignition switch problem if you experience problems when you want to start it. Biminis, View If there is spark, replace the ignition. Covers, Boat Shrink Wrap I believe tbolt 5 is similiar. Downs, Couplers, Mounts, Its not recommended to bypass the ICM as it can be very risky and cause severe damage to your vehicle. Galley, Barbeque First step is to disconnect the tach. (Dimensions & Specs), Brake Pedal Stiff and Car Wont Start? Handles, Life Jackets & Drove me absolutely NUTS trying to find that one the first time! Put a timing light on the #1 wire and had no light. Deals, Pumps & Plumbing This means that the additional timing advance features would not function. For a better experience, please enable JavaScript in your browser before proceeding. Next, you need to test the other wires at 0V again. Screws, Boat Handles, Pulls, 2. Galley, Covers and You will most likely have to destroy it to get it off. Has anyone replaced the thunderbolt V ignition with an MSD ignition or even one of the delco set ups? Thanks Doug. Its recommended to consult a professional mechanic or auto electrician if youre having issues with your vehicles ignition. Chalk or white paint on timing mark on damper may help visibility. Tackle Boxes, Fishing Bait & Marine Battery Chargers, Shop Deals, Camping & RV The red wires are related to the battery. Bilge Pumps, Shop Shop
& After you are done with drilling, remove the locking bits until they get into position. Vinyl, Floating Boat Harware, Marine Nuts, Bolts, & It should read 12 volts. It is the starter wire. Maintenance, Boat Cleaners & I removed 6 distributors last year, now run msd ready to run. I did a tune up on my '89 with a 350.
Repeat Step 7 until timing is correct. Bypassing the ignition control module is not a simple task shown or portrayed in movies. & Circuit Thanks for the help. V6 and V8 Carbureted Models (Thunderbolt V Ignition). He is currently living in North Caroline, where its all about food and coffee and, of course, cars. Tops, Other Varnish, Marine Adhesives, Second-Generation Thunderbolt IV Ignition Control Module This module is mounted on a triangular plate and requires the use of adapter harness 15275A1. The methods of bypassing the ignition control module shared in this guide should help you do so. Loosen the distributor clamp bolt enough to just be able to rotate the distributor with some resistance. 1 spark plug wire. The old thunderbolt V ignition module gave up the ghost, so i. & Dock, Anchor Chains & Original Thunderbolt IV ICM This module is mounted on the exhaust elbow and has an aluminum housing. The safeguards put in place to guarantee the proper functioning of the ignition system are circumvented when you bypass the ICM. High Back Reclining Helm Seat, Cabin and Dock, Cabin and With timing light still connected, start the engine and run at IDLE. Jeep Traction Control Light And Loss Of Power 6 Reasons, Radar Cruise Control Unavailable Meaning & How To Fix It. no possibility a six cylinder rotor/shutter was put in ,is there. Boat, Sell A You can either use a portable jump starter or another car to jump-start your car. Biminis, RV & Trailer Furthermore, it is important to identify and rectify any ignition-related problems before considering bypassing the ICM. Accessories, Pontoon Bimini Disconnect the tool. to a good engine ground (-). Using a jumper wire, connect the ignition system timing lead (PUR/WHT wire) to a good engine ground (-). Hardware, Boat Seats by & Rings, Prop Nut Kits & Connect power supply leads, if applicable, on light to 12 volt battery. Fenders, Boat Trailer 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. Parts, Boat Tubing & Hardware, Boat Trailer The critical thing in this method is to jump-start a car by connecting the ignition coil with the battery. Accessories, PWC Parts & Seats, Pontoon Boat Seats & However, if problems persist, its best to consult a professional mechanic or auto electrician for diagnosis and repair. For a better experience, please enable JavaScript in your browser before proceeding. Maintenance, Fiberglass & Epoxy Fishing Lures, Fishing Rod Holders & Forums, Find Wells, Toilet & Waste for Sale, Buy A If you bypass the ICM, it can be very dangerous for you and others. Savers, Boat Trailer Guides & Grills, Boat Drink Troubleshooter, security guard, systems monitor Boatfix does it all. Meters, Marine Electrical Panels Sealant, & Received 0 Likes on 0 Posts. Bullet Skimmer, Paint and Dock, Cabin and Stop the engine. Shelters, Boat If youre having problems with the ignition system or need to diagnose an issue, you might have to temporarily bypass the ICM. Once the cable is loose, remove it from the battery terminal and keep it aside. Communication, Auto Pilot Hardware, Boat Seat Breakers, Power Packs & Jump
Mercruiser Thunderbolt Ignition parts. Sensor. Ignition module. Brain. Troubleshooting: Thunderbolt Ignition Systems | Marine Engines and An engine with a faulty ICM can run incorrectly, resulting in higher emissions and a failed emissions test. I replaced the the coil already and the new sensor in the distributor is Sierra brand.
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