Drivability problems
Not sure that's the only thing left, but it's on the list and a fairly easy thing to rule out. You'll also be ruling out the software...but not the tune, assuming you load the same configuration parameters.
After those are ruled out, you're down to the wiring, sensors, injectors, coils as major probable causes.
After those are ruled out, you're down to the wiring, sensors, injectors, coils as major probable causes.
PCM or related issue is most likely
Wiring is fine, Ive tested it multiple times. Sensors show a good reading on the scanner and react correctly for each circumstance
Injectors were swapped, same issue
Coils swapped, same issue
1) HPTuners
2) Tune and driving log are posted on pg 2, beyond that I know nothing of of whats inside the PCM
Wiring is fine, Ive tested it multiple times. Sensors show a good reading on the scanner and react correctly for each circumstance
Injectors were swapped, same issue
Coils swapped, same issue
1) HPTuners
2) Tune and driving log are posted on pg 2, beyond that I know nothing of of whats inside the PCM
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On The Tree
Joined: Jul 2009
Posts: 122
Likes: 1
From: Richmond, VA
I had my friend come over and try this. I am not sure if it did its thing or not (used HP tuner), but either way the situation did not improve. I went through the harness, and the only missing connection that I can find is red connector pin #79 (IAC coil A hi). No codes on the pcm. I have a hard time believing that IAC not working would be enough to make the engine not idle and run like crap, but I can't find anything else wrong (MAP, MAF, crank, cam, IAT, and TP sensors' wiring all checks out).
A faulty IAC circuit will directly affect idle quality, but wont do anything when you're moving
Once you rule out the wiring, hook up a scanner and get a live feed of all your sensors. Faulty ones will stick out. My car showed good readings for everything so it was esp frustrating. Doesnt hurt to check the basics
Once you rule out the wiring, hook up a scanner and get a live feed of all your sensors. Faulty ones will stick out. My car showed good readings for everything so it was esp frustrating. Doesnt hurt to check the basics
On The Tree
Joined: Jul 2009
Posts: 122
Likes: 1
From: Richmond, VA
I have already seen that all of the sensors are showing good readings in HP Tuners, so just like your problem, that really sucks.
Does HP Tuners give any feedback if the re-learn was successful? I am still wondering if it actually re-learned.
Does HP Tuners give any feedback if the re-learn was successful? I am still wondering if it actually re-learned.
I had same problem , the car misfired a bit on two cyl and ran like crap tried all
then did CASE learn and the car stopped misfire and solved my problem....
thanks for your threat
Baezi
