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No voltage to coil - 1992 Volkswagen Fox

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Check your igniton fuse if that is good replace your ignition switch in steering colum

Posted on Dec 29, 2010

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Posted on Jan 02, 2017

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What would cause a coil to burn out on a Mazda Tribute 05 v6


Ignition coils fail due to bad spark plugs or plug wires. Another potential cause is heat and vibration, which can damage the ignition coil's windings and insulation. If an engine is experiencing repeated coil failures, the underlying cause may be resistance from worn spark plugs or excessive spark plug gap. And in rare cases, the failure may be due to a lean fuel condition caused by leaky valves.

With coil on plug (COP) type coils, the rubber insulation dries up (over time and heat from the engine) and cracks and will arc across the engine's metal- shorting out. (Electricity seeks the path of least resistance)

By design, coils take low voltage energy from the battery (12-Volts dc) and transform that energy into a very high voltage charge (in the range of 30,000 to 35,000 volts) to energize the spark plugs which in turn ignites the fuel.

If a spark plug or plug wire is open or has excessive resistance, the ignition coil's output voltage can shoot higher (above the max threshold of 35,000 volts) and burns through the coil's internal insulation, causing a short.

When a coil failure occurs, the coil's voltage output drops, and the engine may not start or may misfire badly when under load.

Extreme caution should be exercised when handling coil packs that are energized- a lethal dose of voltage can arc across the air into the body. So don't touch them when the engine is running!

As stated earlier, if you need to replace the COP, replace the spark plug too, make sure the spark plug is properly gapped.

You can read more about coils here:

Ignition Coil High Voltage Display

Feb 05, 2017 | 2005 Mazda Tribute

1 Answer

What burns up coils in 92 chevy silverado


normally this is the wrong voltage coil in use or excess voltage to the coils
check the voltage to the coil/s and it should be around 7.5 volts as most coils are duel voltage
12 volts on the start circuit and 7.5 on the run circuit
7.5 volt coils with a constant 12 volt supply burn out very quickly and it indicates a problem in the resistor circuit for the coil in the run side of the circuit

Oct 21, 2015 | Cars & Trucks

1 Answer

I drive a 1988 toyota conquest 2e. I recently overhauled the engin an put in a new carb,petrol pump,coil and condenser but when I drive the car just shuts off. It takes about 20minutes to start


check the voltage of the new coil
if it is a due voltage (12 volt --7.5 volts ) then when it is running and there is a resistor or lack of resistor in the run wire to the coil, the coil may be overheating and breaking down
check in your workshop manual what the correct voltage coil is for your car ( single 12 vots or duel voltage )I suspect that your new coil is a duel coil when it should be a 12 volt

Oct 21, 2015 | Toyota Cars & Trucks

1 Answer

I have a 1999 plymoth voyager mini van we just had the third ignition coil in the last month what could be causing this th fail?


Check the voltage on the base of the coil. Coils come it 2 voltages. There is the straight 12 volt coil and there is a 12 volt start but runs on 7.5 volts. The 7.5 volt has a resistor in the system and if you are fitting these coils instead of the 12 straight coil they will burn out. There will be 2 wires to one terminal of the coil and you can check the voltage with a multimeter In the start position there will be 12 volts and when you let the key back to the run position read the voltage and fit the correct coil

Nov 02, 2013 | Cars & Trucks

1 Answer

Not getting a spark on my distbubtor


Check coil. Turn key to ON (Do not start)
Check voltage at the end of the wire that connect to the coil.
(Low voltage side ONLY) NOT From The Coil Center !
Q: Any voltage
A: Yes.>> Then bad coil. (Replace coil)
No no power at all.>>> Check engine relay and its connector.


mai Lor

Feb 28, 2013 | 1969 Plymouth Barracuda

1 Answer

1990 Dodge Ramcharger won't start. Battery output 12v, voltage across coil terminals 6v, voltage output at coil port to coil wire 6v, voltage of coil wire output to distributor 6v. Engine will c


There should be a small white ceramic block on the firewall - this component cuts the battery voltage from 12 to 9 volts for the coil and ignition system. It has 4 wires and is called a ballast resistor.
You may need a book with the wiring diagram to be able to test it. You should have battery voltage going in and something like 9 volts coming out.
You can also run a wire with a fuse from the battery to the positive side of the coil to check the system. Disconnect the factory wire from the coil first.

Jan 27, 2013 | Cars & Trucks

2 Answers

My toyota 1998 rav4's ignition coil heats up even if it was running for 5 minutes. what could be the problem?


An ignition coil is a type of electrical transformer that produces high voltage pulses from a relatively low voltage current source. It transforms the voltage from the car battery to thousands of volts required to spark the spark plugs to start an ignition...They are going to "heat up" this is normal.
Are you having a spark or ignition problem, or just concerned about the heat of the coils?
I hope this helps.

Jul 07, 2011 | 1998 Toyota RAV4

1 Answer

No spark runns fine then loses spark wait 10 minutes starts


The spark plugs receives power to spark from coil pack.Check the power at the coil pack and also check the voltage at the coil pack with meter.If the coil pack shows proper power as well as voltage then its fault in spark plugs.Otherwise its faulty coil pack.The coil pack receives power from battery.so also check the voltage of the battery it should be exact 12 volt.
If the battery shows low voltage then the battery needs to be re-charged.
Then check out.
Thanks. you can rate this solution and show your appreciation.

May 20, 2010 | 1992 Pontiac Bonneville

2 Answers

Ignition coils keep crapping out


Possible voltage regulator failure,,providing too much voltage to the coils.

Jan 19, 2009 | 2004 Volkswagen GTI

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