Bad coil packs on an AP2 non DBW FIXED
09-29-2015, 03:48 PM
#1
Bad coil packs on an AP2 non DBW FIXED
So my friend's 05 AP2 was having a weird issue that it felt like it was missing and running on 3 cylinders on occasion in particular the car would run like crap when:
-cold idling
-low rpms and cold
Once conditions warmed up or under high RPMs; the car would run great and no missing or hesitation.
The interesting part is that the car does not throw any codes.
Remedies I tried:
-changed spark plugs (condition of the plugs had good coloring no indication of lean or rich running)
-valve adjustment (usually I run them on the looser side since I do valve adjustments so often)
Finally, I had access to another friend's AP2 and was able to quickly try his coil packs...eureka - PROBLEM SOLVED!
In case anyone else has a similar condition; this would be a remedy to try.
-cold idling
-low rpms and cold
Once conditions warmed up or under high RPMs; the car would run great and no missing or hesitation.
The interesting part is that the car does not throw any codes.
Remedies I tried:
-changed spark plugs (condition of the plugs had good coloring no indication of lean or rich running)
-valve adjustment (usually I run them on the looser side since I do valve adjustments so often)
Finally, I had access to another friend's AP2 and was able to quickly try his coil packs...eureka - PROBLEM SOLVED!
In case anyone else has a similar condition; this would be a remedy to try.
09-29-2015, 09:58 PM
#2
So my friend's 05 AP2 was having a weird issue that it felt like it was missing and running on 3 cylinders on occasion in particular the car would run like crap when:
-cold idling
-low rpms and cold
Once conditions warmed up or under high RPMs; the car would run great and no missing or hesitation.
The interesting part is that the car does not throw any codes.
Remedies I tried:
-changed spark plugs (condition of the plugs had good coloring no indication of lean or rich running)
-valve adjustment (usually I run them on the looser side since I do valve adjustments so often)
Finally, I had access to another friend's AP2 and was able to quickly try his coil packs...eureka - PROBLEM SOLVED!
In case anyone else has a similar condition; this would be a remedy to try.
-cold idling
-low rpms and cold
Once conditions warmed up or under high RPMs; the car would run great and no missing or hesitation.
The interesting part is that the car does not throw any codes.
Remedies I tried:
-changed spark plugs (condition of the plugs had good coloring no indication of lean or rich running)
-valve adjustment (usually I run them on the looser side since I do valve adjustments so often)
Finally, I had access to another friend's AP2 and was able to quickly try his coil packs...eureka - PROBLEM SOLVED!
In case anyone else has a similar condition; this would be a remedy to try.
Out of curiosity, how many miles on your buddy's coil packs? One of mine hit 99k miles and started crapping out!
09-30-2015, 01:10 AM
#3
Originally Posted by HarryD
Nice catch and thanks for the update! I had similar problems -- with no codes -- so yes for anyone reading, coil packs can partially go out and change symptoms as they warm/cool. Out of curiosity, how many miles on your buddy's coil packs? One of mine hit 99k miles and started crapping out!
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