99 Expedition Coil Pack Specs
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99 Expedition Coil Pack Specs
I have a 99 Expedition and I think one of the coil packs has gone bad. It has happened before and I took it to the dealership and they charged $70 just to tell me which one it was. They were going to charge another $150 to put it in, but I did it my self for $50. So, since I think another one has gone bad, I'm going to try and find it my self. What are the specifications for the coil pack. I assume I should be able to test the ohms with a multimeter and figure out which one is bad right?
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From: SE Texas
That'll only work if you have a catastrophic failure and the circuit in the coil is burned out. Most of the time it's the COP boot that arcs thru,and causes a short through the boot to the head. Otherwise-you should get a misfire code after awhile,and then you'll know what cylinder it is.
JL
JL
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OK, lets assume I have had a catostrophic failure, do you know the specs? I only ask because it doesn't seem like it is just arcing on the head. The engine is running VERY rough. I'll check for cracks and things, but while I have them off, I might as well check everything.
Hotshot
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From: St Louis
Originally Posted by Gevans17
check it out in the dark and see if you can find any arcing
A "catastrophic failure" of a COP would set the CEL and a fault code. Resistance readings of COPs is pretty much a waste of time as they almost always fail due to either internal arcing or failure of the boot/spring assy. Neither condition can be determined by a multimeter.
Force a CEL by focusing on the fault condition. Read your code(s) and respond appropriately.
Steve
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Thanks for all the advice guys, but after further investigation, it's the timing chain or gears, which ever it has or both. The only fault codes I got was related to the fuel tank not bleeding pressure correctly or something.
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From: SE Texas
Originally Posted by seiji
Thanks for all the advice guys, but after further investigation, it's the timing chain or gears, which ever it has or both. The only fault codes I got was related to the fuel tank not bleeding pressure correctly or something.
JL
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It was confirmed by the fact that it was missing so badly that it wouldn't stay running and there is a slapping of metal against the timing chain cover.
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Postmaster
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From: SE Texas
Originally Posted by seiji
It was confirmed by the fact that it was missing so badly that it wouldn't stay running and there is a slapping of metal against the timing chain cover.
JL
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