Engine missing until totally warmed up
Help this problem happens with a cold engine.It runs like crap missing on a cylinder for about the first half hour until totally warmed up then it starts working normal.I do have a code scanner and pulled the PO320 code missfire on #4 cylinder but tested all the coils with a muti meter and they all test good.Anyone have an idea of what could cause this??
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The coils can test good and still be bad. Swap the bad cylinders coil to another position. If the misfire changes cylinders, you have a bad coil.
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Originally Posted by mtrai760
(Post 7192789)
The coils can test good and still be bad. Swap the bad cylinders coil to another position. If the misfire changes cylinders, you have a bad coil.
Happened to me. Probably happens to everyone eventually. |
I'm assuming you mean P1320.......and you've got the P0304 by the sound of it. The fault detection on this is almost murphy proof with those two codes. I just went through this exact deal, only it was #5 cyl. Just go and buy yourself a left bank coil and change #4, and clear the codes and you're done. And as mentioned, you can test these coils with a mutimeter until the cows come home......they'll appear OK, but it means absolutely nothing.
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Ok thank you guys I will pick one up
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I replaced the coil on the #4 cylinder and the car is running better than it ever has,No cel.Thank you again guys for your help.
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