Cold Start Problems and Throwing Some Codes

[marcspaz]

Guys, I am having problems with cold starts and every day or two my car throws a P0340 and a P0345. Both of them are cam position sensor "circuit" failures. One code is for the first bank and the other is for the second bank. CPS error cause start-up problems, so I think there may be something legit here.

I am pretty sure the sensors themselves are fine because it is both banks, it says "circuit" (not sensor), and I just had the harness off the engine a week ago. I am more prone to believe I did not plug something in fully or in the correct spot. I did recheck / reseat the sensor connectors, but none of the PCM sockets or the fuse box.

Does anyone no if there is a left and right polarity for the sensors, meaning one was made specificly for the left bank and one for the right bank? Also, I had the balist resistors off of the timing cover. Any chance they have a specific polarity?

Any other suggestions?

Once it starts, it runs great BTW!!!

Thanks,
Spaz

 

[Dex]

This happened to me when I clipped one of the cam position sensors with my turbo. I cut the wire right in half. Its located in front of the valve cover close to being on the timing cover.

 

[marcspaz]

Now this is just flat out weird. The Check engine kight and the idle hunt problem have completely gone away. I made no changes, didn't clear any codes, didn't even connect the code reader or programer. They just went away...

 

[W1ldcat]

That's good , but doesn't tell you what happened. Maybe just a glich.

 

[CataclysmGT]

PCM gremlins!!!!

 

[marcspaz]

I wanted to bring this back up incase anyone was watching it.

Something I did not tell you all is that the CEL started coming back on and turning off over and over again every day or two. It was driving me nuts (I know, short trip). I was getting codes for CPS errors, fuel delivery system errors, random misfire, misfire durning first 1000 rpms, all kinds of stuff was popping up. The weird part was the car ran/runs great. Drivability was fine and I made my fastest pass with all of that going on.

Well, I found out this was a problem with the tune. Originally Doug sent me a base tune for the car, then I dialed it in for max performance on the dyno. I didn't think I did anything I had not done before, but at my request Doug made some corrections to my file and now all of the codes are gone and have been for two weeks.

What has really impressed me is Doug (BamaCHips) was able to dial my car in, without seeing it, better than I could with it on the Dyno. Something to be said for experiance.

Thanks a bunch Doug!