ok i have a 97 GS with a 99 GS engine swapped in cause the old engine was blown.. i didnt do the swap myself.. i paid some1 to do it... when it idles in neutral.. it usually stays at 1000rpms... goes up to like 1300rpms then goes back down to 1000.. it does this constantly n sometimes goes below 1000rpms.. any ideas to what could be causing this? and is it normal for the car to be staying at 1000rpms in neutral?
#125324, "RE: another idle problem..." In response to Reply # 3
Originally posted by Nemo Is it manual or automatic? Manuals should idle at 850. I've heard that if it doesn't stay between 800 & 900 after it's warmed up it can cause a CEL.
It can throw code P1294, but mine never did when my idle was at 1200.
#125329, "RE: another idle problem..." In response to Reply # 7
find out what your code is first and then I'd start checking for vacuum leaks
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#125486, "RE: another idle problem..." In response to Reply # 8
I had the same problem. I removed the throttle body, (easy) cleaned the whole thing with carb cleaner. Removed the IAC, ICM and found the plunger inside it was a little sticky. Cleaned it with carb cleaner and no more idle surge or high idle.