High, hanging idle issue
#1
High, hanging idle issue
I have an 01 SS w/ a truck manifold kit. My specs are a mpt76 q-trim, stock 6.0l w/ turbo cam. I went to the track yesterday and on the way back I noticed at the red lights my car was idleing about 200 rpm higher then normal, after making it back it started to let the rpms hang when I let off to shift. Now, with the car sitting at idle the slightest touch of the throttle causes it to raise the rpms over 1500rpm more, and when it does this it hangs there for several seconds the returns to idle. Other than this problem the car runs fine and doesn't miss. I tried changing out the TPS and the IAC but no go. I also pulled the intake off to check there but it still does it. By the way my car is speed density tuned. I would really appreciate some ideas or help trying to track down the cause of this problem. Thanks in advance.
#4
Yes, I have checked for vacuum leaks, but I have yet to find any. I even went crazy with carb cleaner, and I still didn't find anything. However, I can hear a faint high-pitch whistle that I can't seem to find.
I am using a BBK 80mm tb.
I am using a BBK 80mm tb.
#6
I have a similar issue, but mine is enough to actually push the front tires if you're on anything other than solid ground. Mine will fix itself by turning the car off and back on though. I'll work on actually correcting the issue later, ha.