Odd idling problem
Thread Starter
|
Registered User
Joined: Oct 2010
Posts: 3
Likes: 0
Odd idling problem
I had this problem before but it went away a bit after an oil change and oil filter change. I have a manual so i shift into neutral to coast. But the tachometer only drops down to 1500 or sometimes up to 2500 rpms instead of it's normal 500. I've been told before it was probably the throttle body. I took that off and scoured it clean until it looked brand new. It stopped for a while but now it's back. Any ideas?
Captain
Joined: Mar 2009
Posts: 724
Likes: 1
From: Hazel Green, AL
Go to autozone, advance, napa, o'reilly, etc. and have them do a quick OBD-II readout. Write down any codes listed if there are any.
It sounds to me like you may need one or two new sensors (both on the throttle body), the IAC (intake air control) and/or TPS (throttle position sensor). That, or you have a leak in one or more of your vacuum lines. I would give all of them a good check too - especially the ones coming from the charcoal canister.
It sounds to me like you may need one or two new sensors (both on the throttle body), the IAC (intake air control) and/or TPS (throttle position sensor). That, or you have a leak in one or more of your vacuum lines. I would give all of them a good check too - especially the ones coming from the charcoal canister.
Record Breaker
Joined: Dec 2006
Posts: 1,216
Likes: 0
From: Baltimore, Maryland
If you idle is steady around 900 rpms, your IAC is toast. Had this problem. Decided to get the manual IAC from modernperformance, rather than spend $75 on a new sensor, and wait for it to fail.
