Question about 1993 Jeep Grand Cherokee

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Ignition coil keeps burning up.

My 1993 jeep grand cherokee 4.0liter keeps burning up the ignition coils.

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  • Richard Scordino May 11, 2010

    What is the voltage reading from the alternator (at battery when running)

  • Anonymous Mar 26, 2014

    #8 ignition coil keeps burning up. I have replaced with a new one twice in les than 30 miles



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It's a cheap Chinese coil which burns out easily from not sparking at the right time from either a bad or non signal from the crank or cam sensor, one or even both sensors or wiring may be bad.

Posted on Aug 19, 2012

  • Nigon Kouk
    Nigon Kouk Jun 17, 2014

    If your burning up just one coil for one plug then that plug is probably no good or the wire is no good, the only way a coil like that burns out is from not having an easy path to ground to get rid of it's built up charge, which ultimately has to find some other way to ground, which is probably through the case with an even bigger spark than it was designed for.


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The problem is somewhere else, clean everything up and inspect closely

Posted on Apr 29, 2009

  • lazaro acosta May 11, 2012

    i have jeep liberty 2002 problem isburning ignitio coil



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1 Answer


a jeep Silverado? is this a motor swap? franken jeep. (blue box says Cherokee)_
just one? coil?
or 2?
a key question. that.....
any coil at anytime can burn up. this is called old age or entropy.
nothing lasts for ever and for sure in a red hot engine bay.
if a 2nd one burns up,that means the dwell is too high
dwell is coil charge time.
with EFI car,s this is closely controlled at all times !!!
but there is this part called and ignitor. that can short (replaced points from IN-THE-DAY)
if the ignitor shorts, the coil primary will burn up. fast. key on.

to get help, post what engine you have, chev offers many as an option
and they all work differently (diff, EFI)

Dec 23, 2013 | 1993 Jeep Grand Cherokee

1 Answer

Changed coil in 1993 jeep grand cherokee lerado still not getting fire from coil

Have your ignition module checked. Also check codes for bad reference signal for cam or crank sensor.

Jul 29, 2012 | 1993 Jeep Grand Cherokee

2 Answers

A repair garage replaced my 1993 jeep grand cherokee ignition coil 3 times, it runs for a day then fails and always fails on the highway. I ran a addditional ground from the coil to the battery ,still ...

Hi, I do not know your car, but for quite a long time cars used a ballast resistor!
Maybe someone bypassed it!
It should still be sitting thetre.
Is this a straight forward coil, or part of a electronic ignition?
If you switch the car on, & leave it for a few minutes with the points closed, (you can short the dead end of the coil out to earth), does the coil get hot? Coils hardly ever burn!
What about someone finding some old 6 volt coils & flocking them?

Sep 04, 2011 | 1993 Jeep Cherokee Country

1 Answer

95 grand cherokee straigt 6 cyl replaced coil 3 times in 2weeks. now i have no spark out of coil ut have 12 vots to coil what makes coil burn out? or some other problem?

How does it run when you put the new coil in? Check the positive wire with the ignition off. You shouldn't have any voltage present. Check positive side wiring to ground ( without it connected to the coil ) to make sure you don't have a weak short to ground. Also you can buy coils that have a heat shield built in to prevent the coil from over heating. If you have anymore questions or concerns feel free to ask and I'll answer as soon as I can.

Aug 07, 2011 | 1993 Jeep Grand Cherokee

1 Answer

1993 Jeep Grand Cherokee Laredo 4.0L 6L Auto Trans. Turns over but wont start No spark on plugs, good compression. Just put new ignition coil, rotor cap plugs plug wires. but, checked power supply to coil...

Check for a signal at the ignition coil with a node light or a 12 volt led test light while cranking. Check for a signal at a fuel injector connector jack while cranking. If both these signals are missing. Ignition and fuel signals, then the problem may be some common point. My 've will loose both these signals if there is no crank shaft signal or position sensor. CPS is on rear of engine, on transmission bell housing. Check for connections of PCS.

Sep 21, 2017 | 1993 Jeep Grand Cherokee

1 Answer

1993 jeep grand cherokee put new sencor on, new fuel pump, new relay, coil pack and still is'nt getting any fire from coil. it just keeps cranking.

Crank position sensor mosly likey. Seems like you wasted a lot of money on unnessary parts. Crank sensor should cost about $40

Feb 24, 2010 | 1993 Jeep Grand Cherokee

1 Answer

1993 jeep grand cherokee has the 4.0 6 cyl it keeps blowin out the coil anyone have any ideas?

I once paid 350$ for a zip tie around my coil. the jeep would run for a day or so then die. The shop was stumped. They scanned it and all. Finally figured out it was the connector at the coil.

Jun 24, 2009 | 1993 Jeep Grand Cherokee

1 Answer

93 jeep 4.0 not starting

check the ignition coil pick up

Mar 23, 2009 | 1993 Jeep Grand Cherokee

2 Answers


Back up a minute...Do you have spark from the coil wire? (juice from coil) If so, change or check rotor and cap (wires do not all go bad at same time so unless they are wet, likely at least good enough to start engine)

Mar 05, 2009 | 1993 Jeep Grand Cherokee

1 Answer


OK...I have a 93 diagram I have shows an ignition module next to coil...but there is none on mine, (4.0 engine)
Two items to check are crank sensor and cam sensor inside distributor. Test procedure can be found in just about any manual including haynes.
You will need a decent volt/ohm meter to do testing. You can also check codes by turning ignition switch on/off three times, leaving it on the third time. Check engine will flash code #'s (ex: one flash, pause two flashes= the number twelve.then followed by a longer pause then another set of flashes etc.)

Mar 05, 2009 | 1993 Jeep Grand Cherokee

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