Engine Racing
#1
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Engine Racing
Hi
I have an 97 Bonneville SE with about 116000 miles on it.
I keep having a on and off again problem with the engine racing. I haven't checked the codes for this, but they usually come up for the Throttle Position Sensor. ( I have replaced the throttle postion sensor )
I have noticed that the engine will race when it'* cold and the air cold. The car will run normally after I turn the engine off hot and let it sit for 10 minutes. It'* like I'm driving with the choke on.
Thank You
I have an 97 Bonneville SE with about 116000 miles on it.
I keep having a on and off again problem with the engine racing. I haven't checked the codes for this, but they usually come up for the Throttle Position Sensor. ( I have replaced the throttle postion sensor )
I have noticed that the engine will race when it'* cold and the air cold. The car will run normally after I turn the engine off hot and let it sit for 10 minutes. It'* like I'm driving with the choke on.
Thank You
Last edited by ksmdigital; 03-13-2009 at 04:34 PM.
#3
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Thanks, I'll check that out.
One time I forgot to install the PCV valve when I changed the Upper Intake Manifold and the engine raced like this. I checked out the codes that time and it came up with the Throttle Position Sensor.
I hope to have the chance to check out the codes today.
One time I forgot to install the PCV valve when I changed the Upper Intake Manifold and the engine raced like this. I checked out the codes that time and it came up with the Throttle Position Sensor.
I hope to have the chance to check out the codes today.
#4
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Thanks, I'll check that out.
One time I forgot to install the PCV valve when I changed the Upper Intake Manifold and the engine raced like this. I checked out the codes that time and it came up with the Throttle Position Sensor.
I hope to have the chance to check out the codes today.
One time I forgot to install the PCV valve when I changed the Upper Intake Manifold and the engine raced like this. I checked out the codes that time and it came up with the Throttle Position Sensor.
I hope to have the chance to check out the codes today.
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#8
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The screws are siezed on that part and I hope to get them off to look at it. I do have to confess that some time ago I did spray carb cleaner into the throttle body with the IAT installed.
#9
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Carb cleaner down a TB is not good. Especially if you have electronics in the airflow such as MAF and IAT. Get one good MAF/Electrical component cleaner and spray them off, then try again. Let'* see if cleaning will help before repalcements.
#10
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With a code for the TP sensor though..I'm wondering....what is the actual code number? Many times the PCM sees something and if you have a parts store scan your codes they'll say "oh ...that'* X" and they unforutnately don't know the diagnosis for it. Many of us have the factory service manuals and there are diagnostic tips with each code.
I don't want to see you go buy a part (especially if it'* an expensive one) w/o a good idea that it'* the right part. Watched a guy buy a $160 EGR valve because some folks didn't look up the code. Bored I spent under 5 minutes googling it and asked about his MAP sensor. Oddly enough he had recently used hot glue to hold the MAP together. Sent him a new one and magic.