ignition coil gets hot with key on Dorman 621-134 Engine Cooling Fan Assembly For 11-13 Durango Grand Cherokee, Ignition Coil for Nissan Toyota Dodge Volvo Pickup Truck GM Mercedes Benz, New Radiator Drain Plug For Hyundai Elantra Tiburon Auto Manual 2. I've checked the ESP software wire allocations and it is correctly allocating the wire from pin A4 to coil pack #2. I almost forgot, NAPA sold me a … Find many great new & used options and get the best deals for Scooter Ignition Coil 55cm Black Car Part Scooter Ignition Coil Hot Sale at the best online prices at eBay! . 1974 MF135 with an AG3. If you checked the ignition coil primary voltage with the ignition switch in START, it would be 12 volts. #5 · Oct 8, 2000. 1 … If you mean your ballast resistor, the porcelain rectangle block on your firewall with wires going to it, could be a bad connection on your resistor itself or it's getting ready to go. Overheating Switch. You should also check the wiring of the switch because if the wiring is damaged then the switch can … If the coil gets too hot, the insulation will melt. It should be lower than 12 volts. Motorcycle & Scooter Ignition Key Switches, Motorcycle & Scooter Electrical & Ignition Components, Delphi Car & Truck Ignition Coils, Modules & Pickups; Additional … Hot Shot Ignition Coil Lighting, pulser/source and trigger coils are high-quality OEM replacements Hot Shot ignition coils produce an enhanced spark for a cleaner, more complete burn, resulting in the potential for more power All coils feature hig. Because of this, intermittent … Another factor in getting an ignition coil too hot can be if there is not enough current available from the battery, this could happen if the battery is old or has been drained. (see above) When you insert the key in the ignition switch and turn the key to the Run position, you are sending current from the battery through a wire directly to the positive (+) side of the ignition coil. Spark plug or ignition tester; Ignition coils fail in 2 ways – either complete failure and lack of output, or intermittently, meaning, the coil gets weak, output gets low, or the coil sometimes works and sometimes doesn’t. … Find many great new & used options and get the best deals for VINTAGE ECHLIN IC5500 SUPER IGNITION COIL 12 VOLT USA HOT ROD at the best online prices at eBay! Free shipping for many products! Find many great new & used options and get the best deals for Scooter Ignition Coil 55cm Black Car Part Scooter Ignition Coil Hot Sale at the best online prices at eBay! . light is off at negative terminal of coil. i have 1 coil that keeps getting very hot within 15 sec of K. At high temperature, this problem can produce bucking or misfires. Confirm the recommended primary and secondary winding voltages from your car’s user manual. over heated and let some ooz out. If the coil was very hot this means the ignition switch was on or the ignition switch is messed up and providing power to the coil while the switch is off. Find many great new & used options and get the best deals for Scooter Ignition Coil 55cm Black Car Part Scooter Ignition Coil Hot Sale at the best online prices at eBay! . Currently, there are four types of ignition systems used in most cars and trucks, by order of invention: conventional breaker-point (mechanical) ignitions, high energy (electronic) ignitions, distributor-less (waste spark) ignition and coil-on-plug ignitions. The biggest sign your … Attach an 18 or 20 AWG jumper wire from the negative coil terminal to an engine ground. terminal when I crank the engine. No other packs are getting hot, and my dwell map is shown below. Use a common test light to check. If not, check the battery connections and the battery itself. Free Postage. Electronically switched circuits fail like this because the silicon stops switching around 100 C. Apr 11, 2014. Be sure to subscr. … Find many great new & used options and get the best deals for 1 ORIGINAL VINTAGE MODEL T FORD #64 IGNITION SWITCH KEY-(1919-1927) ** at the best online prices at eBay! Free shipping for many products! Skip to main content . O first ignition coil failed. The coil will overheat (and can be ruined) if power is provided and IF the contact points in the distributor happen to be at the point on the distributor cam where the points are closed. . The burning of the wire was due to the starter solenoid having a short on it, so replaced the solenoid so starting shows the correct voltage with no current being drawn excessively has been removed. 152 Perkins gas engine. #1. Thanks . If I disconnect any wire at or after the negative terminal, the test lamp lights up . The leading cause of premature failure of an ignition coil is due to a worn or bad spark plug ignition cable. The more insulation that melts, the less VOLTAGE your coil can produce. Dirty or worn spark plug. How to wire up the ignition on older cars with points and coil. Worn or damaged ignition coil. With the meter, you can check for an internal open in the primary windings or excessive resistance. It has to do this hundreds or thousands of times per minute, so it heats up a lot. The "pink" wire is from the ignition switch, IGN on points models, IGN 1 on later ones. This can cause the car to be hard to start or to misfire. This wire provides running voltage to the ignition system and can be resisted for points systems, oir full volts for an HEI. 54 Find many great new & used options and get the best deals for Harley Davidson EFI Fuel Injected Touring Softail & Dyna Ignition Coil 31743-01 at the best online prices at . . As it gets hot the energy falloff weakens the spark until the engine quits making noises. When tractor sits for a couple of hours, tractor will start and everything works fine. Let the professionals fix it so you can be on your way. Ever wonder why your key gets really warm after driving your car? In this video I give a quick tip on why some Honda ignition keys get … A dedicated 'Ground' wire to the engine head, then over to the 'Black' wire on the ignition module will usually help with the ignition issues when talking about 'Grounding'. hoop98, Aug 14, 2013 SHARE POST #7 Rattle Trap Member With the key in the on position (not running), the LED should flash five times to indicate all systems are go. Then locate the starter solenoid and connect the solenoid to the positive battery terminal. no spark. You can place your hand on the coil, but you WANT to leave go. Hot Shot Ignition Coil Lighting, pulser/source and trigger coils are high-quality OEM replacements Hot Shot ignition coils produce an enhanced spark for a cleaner, more complete burn, resulting in the potential for more power All coils feature hig. Fel-Pro 60985 Exhaust Pipe Flange Gasket. Jun 7, 2010 #4 Jimbo Billy Bob Well-Known Member Local time C $35. This effectively REDUCES the length of the long long long strand decreasing the electrical resistance (shorter wire has LESS resistance than a LONG wire), increasing the heat, and causing more insulation to melt. At times, the codes must be cleared before the engine will restart. 8″ and water tends to bead on ignition parts very close so the water acts as a undesirable pathway. DO NOT touch any +12-volt wire to the coil's - terminal. Hot Ignition Coil Ignition Coil Komponenten Zugang Austausch Components. CRS. Now test the thicker primary … Mar 24, 2013. 1 … In this case, the ignition coil is overheating, and then the coil driver goes and loses its mind and turns the coil on way too long, resulting ultimately in the engine stall. For 14-19 Corvette C7 Stage 2 Painted Black Front Bumper Splitter Spoiler Lip. Bulk savings: Buy 1 AU $17. Find many great new & used options and get the best deals for VINTAGE ECHLIN IC5500 SUPER IGNITION COIL 12 VOLT USA HOT ROD at the best online prices at eBay! Free shipping for many products! Find many great new & used options and get the best deals for 1 ORIGINAL VINTAGE MODEL T FORD #64 IGNITION SWITCH KEY-(1919-1927) ** at the best online prices at eBay! Free shipping for many products! Skip to main content . Turn the ignition switch off. The job of the ballast is to reduce the voltage to the coil after the engine starts and warms up. You will need to check between the primary terminals with the meter leads. The two big ones are self explanatory, one from the the battery, the other to the starter. This happens when the resistance in the spark plugs and wires is much lower than what is expected. test light is on at the positive side of coil. These bad ignition coil sounds … Find many great new & used options and get the best deals for VINTAGE ECHLIN IC5500 SUPER IGNITION COIL 12 VOLT USA HOT ROD at the best online prices at eBay! Free shipping for many products! Find many great new & used options and get the best deals for Scooter Ignition Coil 55cm Black Car Part Scooter Ignition Coil Hot Sale at the best online prices at eBay! . Motorcycle & Scooter Ignition Key Switches, Motorcycle & Scooter Electrical & Ignition Components, Delphi Car & Truck Ignition Coils, Modules & Pickups; Additional … The leading cause of premature failure of an ignition coil is due to a worn or bad spark plug ignition cable. If this happens, the professionals at YourMechanic will be able to measure the voltage … Check a no-start. If it's mounted on the engine, it will get hot. Motorcycle & Scooter Ignition Key Switches, Motorcycle & Scooter Electrical & Ignition Components, Delphi Car & Truck Ignition Coils, Modules & Pickups; Additional … Would my coil be getting hot just with ignition key on (in run) without engine running if it was an alt problem ? And cold (off for 12 hrs+) The coil was getting hot just testing voltage at coil without starting engine. 61 each. This engine will run with the CMP sensor unplugged, so the P0341 code is not an issue with the stalling problem. Doc37683. If not, then something is wrong with the resistor wire. Also make sure something wasn't spliced into one of the wires going to it. Coil is already on the inner fender 67Dart273 Well-Known Member Joined Oct 14, 2010 Messages 56,663 Reaction score 28,524 Location Idaho Sep 13, 2012 … MF135 Overheating coil. HVAC Heater Core for Chevrolet Impala Caprice … Most likely the cause of the ignition module burning out is because of the ignition coil, and you should try replacing the ignition coil and the ignition module both together, and be sure to clean out the … When bad ignition coils are unable to produce enough voltage for the spark plugs to transmit to the fuel, the fuel explodes loudly. 44,712. Then unplug the ignition switch wiring from the solenoid. !20KV can jump a gap of approximately 5. Six cylinder dwell should be mid 30s? 3) Coil is … Find many great new & used options and get the best deals for Scooter Ignition Coil 55cm Black Car Part Scooter Ignition Coil Hot Sale at the best online prices at eBay! . 95 RX-7 FD3S USDM. Inside a traditional ignition coil are two coils of wire … Find many great new & used options and get the best deals for Boat Ignition Key Switch fit for Mercury Marine 87-17009A2 Sierra MP41070-2 S at the best online prices at eBay! Free shipping for many products! . 5L Identifying a single cyl misfire using cyl drop test (on accessible cylinders), using a low amp probe to show ignition coil current ramps. Motorcycle & Scooter Ignition Key Switches, Motorcycle & Scooter Electrical & Ignition Components, Delphi Car & Truck Ignition Coils, Modules & Pickups; Additional … The reason the ignition coil gets hot is that the coil converts a 12-volt current from the battery into a higher voltage that jumps the gap in the spark plug and … Find many great new & used options and get the best deals for Boat Ignition Key Switch fit for Mercury Marine 87-17009A2 Sierra MP41070-2 S at the best online prices at eBay! Free shipping for many products! . Quantity: 3 available. Ignition coil gets hot and quits working after tractor is run a couple of hours. Condition: Brand New. Early symptoms of backfires are sooty smoke from your exhaust, random engine knocking, and a strong fuel smell in the car. Red Hot-Spark wire to the coil's + terminal C. 52 Find many great new & used options and get the best deals for Ignition Coil CDI Spark Plug GY6 50cc 125 150cc Moped Scooter Pit Dirt Bike ATV at the best online prices at Free shipping for many products. It sounds like the ignition coils are getting hot and when the engine is shut off, the engine will not restart due to an ignition coil that will not produce a spark. Attach positive (red) lead of your voltmeter to the positive side of the coil, and the negative (black) lead to an engine ground. Any time you have moisture around ignition components you may have a problem. Zoomkey High Quality Car Ignition Coils OEM 12137594937 for BMW 1 3 5 6 7 Series X3 X5 X6 Z4 New, Find Details and Price about 12137594937 F30 F10 F02 E70 Ignition Coil from Zoomkey High Quality Car Ignition Coils OEM 12137594937 for BMW 1 3 5 6 7 Series X3 X5 X6 Z4 New - Zhongyu Electronic Commerce (Shanghai) Co. 2x Chrome Metal Red V6 Logo Emblem 3D Engine Sport Turbo Badge Sticker Car Decal, SPI Ignition Coil Assembly for Yamaha Phazer MTX RTX Apex Attak GT Venture Lite. #2. The 12 volts to the coil should go off when the key is turned off regardless of anything going on with the points. NOS 93-97 Honda CR125R OEM Engine Mount Flange Bolt 90106-KZ4-890 8x130. Aug 12, 2018 Typically the engine will stop on a compression stroke. Now read the voltage at the positive coil terminal. Had this a long time ago when some car ignition systems (Alpine, Solara, Horizon) which had ballast resistors in the supply to give 9v (which were bypassed for … If not, take note of which engine code you had. E. VINTAGE FORD MODEL T IGNITION COIL SWITCH BOX KEY NEW FLAT PIN. Ignition Coil Module For Ryobi RT190 HDK19H42 Tractor Mower Kohler Eng Powered. Check a no-start. achris More fish than mountain goat. the resistor gets hot. The following is the detailed introduction about our products: 12 Volt Blue With BracketOil filled 12V Blue Coil with Mounting Bracket, 00-012US is a factory replacement Blue Coil with the3 ohm impedance (internal resistance), compatible with points, and points replacement devices, in 12V electrical systems and compaFitment:For 67-79 Type 1 Bug67-79 Type 2 … No over-heating coil. Join Date: Posts: 1. Inside the coil is a series of copper windings that loop . The 12 vdc from the starter is correct and only present when cranking the engine. 7L, Front Fog Light Grille Cover Bezel Chrome Ring For Audi A4 S LINE S4 2008-2012, Genuine Mopar Fuel … Mar 15, 2014. Now, leaving the key in the 'Run' position is certain death to the module, and usually doesn't do the coil any good either. Ignition coils fail in 2 ways – either complete failure and lack of output, or intermittently, meaning, the coil gets weak, output gets low, or the coil sometimes works and sometimes doesn’t. The burning of the wire was due to the starter solenoid having a short on it, so replaced the solenoid so starting shows the correct voltage with no current being … 906 Posts. the coil gets warm. Free 4 day shipping. Share on Twitter. Another symptom of a bad ignition switch is if it is overly hot when touched. I found this out when checking codes. Find many great new & used options and get the best deals for VINTAGE ECHLIN IC5500 SUPER IGNITION COIL 12 VOLT USA HOT ROD at the best online prices at eBay! Free shipping for many products! 1. +12 volts from the ignition switch (+12-volt power source) to the coil's + terminal B. With the car running, check the voltage on the + side of the coil with a voltmeter. To get the ignition running initially, only these wires should be attached to the coil's + and - terminals: A. I am getting no spark from my coil. A weak spark, or no-spark, problem may originate within one or more common ignition system components: Worn or damaged spark plug wire insulation. Pulled high-tension lead from distributor and verified coil was not working, i. 86 each. Black Hot-Spark wire to the coil's -terminal. 05. terminal. … C $6. com, C $64. NOS Genuine Kawasaki Right Ignition Coil High Tension Cord KH250 KH400 S1 S2 S3, PROTEX BRAKE PADS For REAR NISSAN PATROL GU Y61 FRONT PULSAR N14 2. Waterproof Case (With Pocket Cover Fitted) They even get too hot to touch sometimes when the engine is running, but at least then they have the benefit of some of the cooling air flowing over them. $24. Most (especially stock ones) should show voltage at the positive side of the coil with the key ON. A bad spark plug ignition cable will have a much higher … Suspension Coil Spring Seat Front Lower Moog K160321. Faulty ignition switch or ignition coil Bad starter solenoid Bad starter motor Recoil is worn or broken Blown fuse Charging system problem Incorrect operating procedure 1. 2002-07-27 40720. The tractor runs fine when running. The two small terminals are: One which energizes the solinoid, from the key, and one which get 12+ when the solinoid is energized. Related Products. The proper method to check for spark is with a spark tester. Hot Ignition Coil Ignition Coil . 14K views 4 years ago. light does not light up or flash on neg. Buy 2 AU $17. 1) I'd see if the coil was powered key off for some reason. Motorcycle & Scooter Ignition Key Switches, Motorcycle & Scooter Electrical & Ignition Components, Delphi Car & Truck Ignition Coils, Modules & Pickups; Additional … Find many great new & used options and get the best deals for Hot New Ignition Coil Ignition Coil Austausch Components Komponenten Part at the best online prices at eBay! Free delivery for many products! . Other then that start checking connections down the line from the ignition switch for power. A damaged coil can short some windings, causing high current but low inductance, so low energy. Backfires are dangerous, and you should attend to any symptoms that … The ignition switch can become hot due to a loose connection. installed new ignition coil, verified that ignition was set to direct fire and falling edge. So why? The coil over-heating is generally caused by insufficient dwell period between each spark or insufficient voltage 'damping' (like when a condenser breaks down). If the ignition coil was indeed faulty, you will now see an engine code for “Misfire – Cylinder 6,” as the defective coil from … Another factor in getting an ignition coil too hot can be if there is not enough current available from the battery, this could happen if the battery is old or has been drained. Breaker-point (mechanical) ignitions and high energy (electronic) ignitions are both . Trucks with external ballast resistors should have a 4 terminal solinoid. Swapped . As a result, there is voltage/current overload on the ignition coil and it starts getting hot. Using a screwdriver, short the solenoid’s positive terminal to … Find many great new & used options and get the best deals for Scooter Ignition Coil 55cm Black Car Part Scooter Ignition Coil Hot Sale at the best online prices at eBay! . For factory … Scooter Ignition Coil 55cm High Performance Scooter Ignition Coil Hot Sale. Remove one spark plug wire at a time and check for spark on the engine with a spark tester tool. That should be opposite what it was on a 6v positive ground. Whenever the ignition coil has a higher voltage, for example, there’s the possibility that it won’t output smoothly. Joined May 19, 2004 Messages 27,467. New Honda C 50 C 70 C 90 Cub Gear Lever NEW ; Inner Water Cup Holder Panel Trim Cover For Benz ML W166（12-15）GL X166（13-15） Plug and Pins Only AMP 26 & 34 Pin 4 Row 3 Key Superseal Set . The ignition relay is basically an electrical device that works as a switch for the power to the ignition system and your vehicle’s fuel system. Spot the ignition coils on the engine and remove the bolts holding them. SPI Ignition Coil Assembly for Yamaha Phazer MTX RTX Apex Attak GT Venture Lite. 0L SILVIA. If the ignition relay shorts, burns out, or otherwise fails while the engine is operating it will cut off power to the fuel pump and ignition system. Motorcycle & Scooter Ignition Key Switches, Motorcycle & Scooter Electrical & Ignition Components, Delphi Car & Truck Ignition Coils, Modules & Pickups; Additional … Find many great new & used options and get the best deals for VINTAGE ECHLIN IC5500 SUPER IGNITION COIL 12 VOLT USA HOT ROD at the best online prices at eBay! Free shipping for many products! The low-voltage wire from the ignition switch/battery to the coil was sheathed in an armored cable to guard against “hot wiring” of the vehicle. R Points are more likely to be closed than open when the engine stops it is normal for the coil to get hot if left with the key "on" because of this. After getting … The proper method to check an ignition coil is using an oscilloscope, but an ohm meter works well, too. Meaning the point are closed - electrical current will be flowing through the coil and points when you apply the ignition switch. e. 2) Dwell is out of whack. £24. Thought, since engine runs, bad coil or wrong coil for the application. , Ltd. I have an excuse. Find many great new & used options and get the best deals for Boat Ignition Key Switch fit for Mercury Marine 87-17009A2 Sierra MP41070-2 S at the best online prices at eBay! Free shipping for many products! . I don't know if it can fail closed, thereby keeping the full 12 volts to the coil while the engine . Share Improve this answer Follow answered Apr 7, 2017 at 21:41 Solar Mike Scooter Ignition Coil 55cm High Performance Scooter Ignition Coil Hot Sale. The battery needs to be fully charged and in good health, then check the MSD connections to the battery positive terminal as well as the ground. This high … 2. Buy 3 AU $16. In this case, instead of using 12 volts to create higher voltage from a coil of high resistance wire, it would need more power at lower voltages to overcome friction (heat) … Found this through searching. The reason the ignition coil gets hot is that the coil converts a 12-volt current from the battery into a higher voltage that jumps the gap in the spark plug and ignites the fuel-air mixture in the cylinder. Scooter Ignition Coil 55cm High Performance Scooter Ignition Coil Hot Sale. This excessive voltage creates a high amount of heat which consequently melts the coil's wire insulation. 42 Free shipping for many products Find many great new & used options and get the best deals for New BMWE36 E34 E39 E38 E85 EWS Ignition Key Antenna Coil O-Ring Seal 32321094182 at the best online prices at Found this through searching. https://www. still having the same issue. $20. And no cut-out when releasing the ignition switch from the 'start' position - although this was still considered a second issue. If I disconnect any wire at or after the negative terminal, the test lamp lights up at neg. The spark is arcing in atmospheric pressure. Any electric circuit can get too hot if the resistance (ohms) … Any electric circuit can get too hot if the resistance (ohms) is too low. Water acts as a conductor and ignition systems have as much or more, on modern cars, as 120,000 volts. 0L 2. If the ballast breaks down, it normally fails open, meaning that no power at all will be sent to the coil and the car won't start. Aftermarket Worry-free Hot-selling products Harley Davidson EFI Fuel Injected Touring Softail & Dyna Ignition Coil 31743-01 First-class design and quality hhcut. Ever wonder why your key gets really warm after driving your car? In this video I give a quick tip on why some Honda ignition keys get hot. It resembles a spark plug but has a sunken center electrode that simulates a load on the coil. 15 each. com/watch?v. Should always carry a spare. But some, like capacitive discharge types (such as MSD 6's for instance) won't show voltage there until the box shoots it in right before firing. I pulled the power lead off the coil and it sparked! (no key in the ignition . Remember that Voltage = Amps x Resistance. Find many great new & used options and get the best deals for VINTAGE ECHLIN IC5500 SUPER IGNITION COIL 12 VOLT USA HOT ROD at the best online prices at eBay! Free shipping for many products! Your car’s ignition coil may be getting hot because of excessive current flowing through it. Top randallc Cub Pro Posts: 1906 Joined: Tue Jan 18, 2011 3:16 pm Find many great new & used options and get the best deals for Genuine WAI Rail Type Ignition Coil for Saab 9-5 HOT Aero B235R 2. This is an accurate sign that the ignition switch problem could be rooted in the electrical system. The most obvious symptoms will be the vehicle starts, but then immediately dies as soon as you release the key. The circuit that powers the ignition system is simple and straight forward. If you only have a 3 position keyswitch (off, run and start) consider getting a 4 position switch (ACC, off, run and start) for that amp, or just screw threw the dash and put a toggle switch and relay in to use as a turn on for your amp. On some later vehicles, this wire is movedd from the R term on the solenoid to the IGN 2 part of the ignition switch, same operation. 00. 99. Holding the plug wire and seeing if a spark jumps to ground is inconclusive. The Ignition Coil . Now, start the vehicle and run for several minutes. Usually if the resistor wire went south, it would open up completely or increase in resistance. A bad spark plug ignition cable will have a much higher than normal resistance. Distributor ignition systems, multi-coil systems, expand CDI range or Haltech Multiplex CDI systems; Connect to a wide range of display dashes and expansion devices via CAN. Clearing the codes, starting the engine, and running a few seconds until it will stall will cause both codes to come back. Coil has been replaced twice suspecting a defective coil. Troy-Bilt Gas Tank is Empty Needing gas to make a gas-operated Troy-Bilt … The power from the ignition switch need to go to the plus side of the coil and the negative goes the the distributor on a 12v system. My main issue now is with the ignition coil getting hot when the key is tuned to on (as in engine running). Automotive; Parts & Accessories; Share on Facebook. In this case, instead of using 12 volts to create higher voltage from a coil of high resistance wire, it would need more power at lower voltages to overcome friction (heat) … Scooter Ignition Coil 55cm High Performance Scooter Ignition Coil Hot Sale. NEW BETTER VERSION. 2008 Ford Edge 3. You can avoid this by checking the … See more Ignition coil gets hot and quits working after tractor is run a couple of hours. In our example below the bad spark plug ignition … When the key is on essentially your building up 30+ thousand volts in the ignition coil with no place to go. Attach an 18 or 20 AWG jumper wire from the negative coil terminal to an engine ground. When it comes to an ignition coil being over worked, there are three things that come to mind: The resistance in the secondary is too high The air fuel ratio is too lean Your car’s ignition key gets hot because of a bad connection somewhere in the system, such as an open switch or faulty grounding somewhere else. Free shipping. youtube. Other reasons could be … In this case, the ignition coil is overheating, and then the coil driver goes and loses its mind and turns the coil on way too long, resulting ultimately in the engine stall. Ignition Coil for Mercury Marine 802371A1, 802371 & Sierra 18-5181, 185181. So I've done a video to show anyone else. The ignition coil is the unit that takes your relatively weak battery power and turns it into a spark powerful enough to ignite fuel vapor. I am experiencing the same problem. Turn the ignition switch to the run position. This is because the current turbulence that is … Essentially, my Haltech IGN-1A coil pack #2 is getting CRAZY hot with the key on, engine off. The ignition switch is connected to a series of high-resistance wires and any of the terminals connecting these wires can overheat. Car suddenly stalls while operating. One of the most common symptoms of a failed ignition relay is a car that suddenly stalls while operating. So, if the spark plugs, and wires, are supposed to have a certain amount of resistance; but, the resistance is much lower, excessive current will flow through the ignition coil, and it will heat excessively. The ignition relay is activated as soon as your turn on your … 1 Answer Sorted by: 2 Had this a long time ago when some car ignition systems (Alpine, Solara, Horizon) which had ballast resistors in the supply to give 9v (which were bypassed for starting with 12v) - when a 9v coil was used in the wrong system it would overheat. O. Depends on which ignitions system you have Josh. The coil also gets hot with just the key on, but engine not running. 3 (9/01-10/05) at the best online prices at eBay! Free delivery for many products. Do not try to bypass the ballast resistor and do not keep trying to start the engine.


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