Someone pleeeeease help me figure out this problem!
01-25-2010, 08:16 PM
#1
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Someone pleeeeease help me figure out this problem! This problem is driving me absolutely insane. For the last couple months I have been fighting this issue with my tachometer. While driving, it will randomly fall to 0 RPM for maybe 5-10 seconds at a time and pop back up to normal. It appears that the majority of this time is under acceleration but then again it sometimes happens at idle as well. It is throwing a code for the Camshaft position sensor. I have replaced it 3 times. The first couple times it seemed to help the problem with the last time doing no help at all. I did some more reading and decided to replace the crankshaft sensor. No cigar. Next, I replaced the instrument cluster. Still no help!
From what I can tell, the car drives, starts, and performs as normal. Been driving it like this for quite sometime with no added problems.
I'm going to burn this car to the ground if I can't figure out this friggin problem. For the love of god, someone please help me figure this out!!!
From what I can tell, the car drives, starts, and performs as normal. Been driving it like this for quite sometime with no added problems.
I'm going to burn this car to the ground if I can't figure out this friggin problem. For the love of god, someone please help me figure this out!!!
01-27-2010, 11:53 PM
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man im having the same problem replaced the pigtail and alli noticed that where the pictail goes into the harness its a little "loose" feeling check there reach behind the intake while its running and wiggle the wires and have some one in the car watching and if it moves then there lies your problem
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01-28-2010, 06:27 PM
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01-28-2010, 06:28 PM
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man im having the same problem replaced the pigtail and alli noticed that where the pictail goes into the harness its a little "loose" feeling check there reach behind the intake while its running and wiggle the wires and have some one in the car watching and if it moves then there lies your problem
01-28-2010, 06:29 PM
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Does anyone know what pin to check at the PCM? I looked at the PCM earlier thinking that was the problem and it seemed fine. I just unbolted it and bolted it back in. However, I wouldn't even know which one to look at.
Would a Tech II be able to tell me if I have a bad connection somewhere?
Would a Tech II be able to tell me if I have a bad connection somewhere?
01-28-2010, 06:49 PM
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Like someone already stated, have someone watch the tach, and wiggle stuff around, this does sounds like a loose or shorted wire, if its mainly happening when you accelerate, things are getting tossed a little from the inertia, could be a chaffed wire making contact with something when the motor is rocking.
01-28-2010, 09:51 PM
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Like someone already stated, have someone watch the tach, and wiggle stuff around, this does sounds like a loose or shorted wire, if its mainly happening when you accelerate, things are getting tossed a little from the inertia, could be a chaffed wire making contact with something when the motor is rocking.
I hate electrical gremlins
01-30-2010, 06:43 AM
#17
I went through this a while back with my 2001. My PCM ended up being bad. I did all the diagnostics in the GM flowcharts and even swapped out the cam sensor and engine harness with other ones I had and knew were in good working order. Go here to find the flow charts
http://gearchatter.com/
http://gearchatter.com/
01-30-2010, 06:46 AM
#18
Like someone already stated, have someone watch the tach, and wiggle stuff around, this does sounds like a loose or shorted wire, if its mainly happening when you accelerate, things are getting tossed a little from the inertia, could be a chaffed wire making contact with something when the motor is rocking.
01-30-2010, 10:48 AM
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The car ONLY does it while driving. Not when at idle. Having someone wiggling wires while sitting in my garage will do be no good since it acts as normal
01-30-2010, 11:24 AM
#20
Is your car auto?
If yes, put it in D, hold the brakes, and load up the engine mounts. See what the tach does.
From all you have described, the problem is a wire running from the cam sensor to the PCM. But I don't like jumping to conclsions without checking it out.
If yes, put it in D, hold the brakes, and load up the engine mounts. See what the tach does.
From all you have described, the problem is a wire running from the cam sensor to the PCM. But I don't like jumping to conclsions without checking it out.