Coil pack going out
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Freshman User
Joined: Jul 2005
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Coil pack going out
I know I have a coil pack going out or has gone out because the torque converter is not pulling in at low RPMs, it is jerking.
The last time I had this problem, the check engine light came on and the decoder told me what cylinder had the failed coil.
Will there be a code telling what cylinder is failing although my check engine light is not on yet?
Or do I need to wait until the light comes on to diagnose?
The last time I had this problem, the check engine light came on and the decoder told me what cylinder had the failed coil.
Will there be a code telling what cylinder is failing although my check engine light is not on yet?
Or do I need to wait until the light comes on to diagnose?
Posting Guru
Joined: Mar 2004
Posts: 1,195
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From: Sunapee NH
If going to the trouble of pulling the COPs, why not just replace them? I picked up 8 new units on ebay for 115 a number of months ago. I've already put on 20K on them with no issues. I think the seller was Global Automotive or something like that.
Freshman User
Joined: Jul 2006
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To the OP.....if its missing at idle, you can start unplugging the coils with it running until you find the one that is bad. I agree about replacing all 8 coils as well. Global Automotive has a set of 8 for about $90 on ebay. I wqould replace the plugs at that time as well
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Freshman User
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Two years ago when I replaced one, they didn't cost $90 to $100 a set. They were $60 each. Plus, that was two years ago and just now am I needing to replace another.
I am not changing all 8 if I can determine exactly which one giving the misfire.
I am not changing all 8 if I can determine exactly which one giving the misfire.
Junior User
Joined: Dec 2009
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coil packs are like u joints> better to replace all at once. But feel free to do as you like. it is your truck after all.
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Senior User
Joined: Jun 2003
Posts: 435
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From: Brunswick, Maryland
I don't understand your logic on this. Why would your replace 7 good coils just because the 8th one failed. Are you going to replace all 8 of yours every time one of them fails?
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