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What stops the coil packs from getting power - Yukon XL GMC Cars & Trucks

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If the coil has not 12 volts to it when the key is turned on,then the ignition switch is bad or there is a ignition fuse blown.

Posted on Mar 30, 2011

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Posted on Jan 02, 2017

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How do I fix a no start problem with my mini van ?


You may need a shop manual for this. The coils get power from the ASD relay and the key switch. The engine computer grounds the coils to make them fire. Those circuits and the crank sensor would need to be tested.

Sep 05, 2015 | Chrysler Town & Country Cars & Trucks

1 Answer

2000 4 cyl eclipse no power to one coil pack any ideas?


Looking OK is not the answer. Go to a wrecking yard, get another coil pack and try it. If you mean there is no power to the pack then get a pal and an electrical tester and check the continuity of the supply. Be careful, the voltages at the coil are high enough to kill.

Feb 01, 2015 | 2000 Mitsubishi Eclipse

1 Answer

My coil pack keeps going out in my 2005 dodge caravan.. There is no power going to the coil pack


I don't understand why you would replace the coil if you are not getting power to it.
The coil is powered by the ASD relay. Have you replaced the relay ?

Jan 29, 2013 | 2005 Dodge Stratus

1 Answer

Im not getting spark to plugs from coil pack, i have replaced coil pack, plugs, and fuses and wires what next\


check for power to the coil pack check your electrical connections at the coil pack

Aug 31, 2012 | 1989 Chevrolet Beretta

1 Answer

No fire to plugs on 1991 ford aerostar 4.o replaced crank sensor,coil pack and switch what else is there


If the engine cranks but has no spark, you need to know if the coil is getting voltage and a ground signal. The coil gets power from the ASD relay and a fuse.
Have you checked the compuer for trouble codes ?

Jul 08, 2012 | 1991 Ford Aerostar Extended

1 Answer

When i start my 2001 kia optima my car putters. i changed my bad o2 sensors. but not sure what the problem is. and when i drive sometimes it jerks. what could the problem be


The spark and fuel system needs to be inspected.--------- The spark plugs are getting fouled or very loose, can cause sputtering problem.Inspect the spark plugs and coil packs.The spark plugs gets power from coil pack.If the spark plugs are very old and dirty, then it needs to be replaced.--------------- The **** problem also relates to faulty worn out spark plugs or clogged fuel filter or low fuel pressure or problem with ignition coil pack.----------- When coil pack stops giving power to spark plug the car will **** while driving.---------- So very first thing you get tested is spark plugs and ignition coil packs.If they are tested good, but looks very dirty/ worn out, that can also be the reason.----------- But if spark plugs and ignition coil tested ok and cleaned properly, but still same problem, then get fuel pressure tested.If fuel pressure is low, the fuel pump and fuel filter are the cause of problem.----------- ------------------ Also one more thing, " IS there check engine light coming ON dash" ? If yes, then get the car scanned at autozone service center.Its absolutely free to get car scanned at autozone.They do it for no charge.------- In scanning you will get error codes, as per error codes, it will point towards faulty part, causing this sputtering and jerking problem.----------------- But if there is no check engine light ion dash, then get the above mentioned possibilities checked.That will help.Thanks.Helpmech.

Aug 05, 2011 | 2001 Kia Optima

2 Answers

I dont have any spark. have power to the coil pack just nothing past that. what to do??


Check the crank shaft postioning sensor. If you are getting power to the coil pack and there is no power coming out of the coil pack the coil pack might be bad or have corrioson between the coil pack and the mount. Thanks

Mar 07, 2011 | 1999 Mitsubishi Eclipse

2 Answers

Changed coil pack that wasnt firing started fine


check the fire to the coil pack if it's present then check the pulse to the crank sensor

Jan 14, 2010 | 1999 Pontiac Firebird

2 Answers

Procedure of replacing coil pack on 1998 Ford


see if you have power to the coil pack.if your have power tothe coil and no power coming out . the coil is bad. check your fues

Sep 23, 2009 | 1998 Ford Escort

1 Answer

Not getting spark


Testing the coil packs.

1. Get an INSULATED wire and hook it to a ground on the car.
2. Get some one to help you
3. pull a spark plug wire off the coil
4. hold grounded wire close to, but not touching, the part where the spark plug wire connects
5. keep hands away from coil and have your helper turn the engine over ( start car and turn off)
6. if there was a spark between the wire and the coil pack it is good. if not, the coil pack needs replaced
7. replace the spark plug wire
8. test the rest

Apr 22, 2009 | 2003 Mitsubishi Galant

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