Well the transmission fluid was about one quart low, which I remedied.

It seemed to have helped somewhat, but when the car tries to lower the RPM's to around 700 (In Drive at a stop light) it quickly goes back up to around 1,100.

Also, on the freeway, RPM's do not decrease below around 1800 when I take my foot completely off the pedal.


Last night I took off the Needswings single CAI and the throttle body to completely clean it and sprayed the connections in that area with electronic parts cleaner

Then re-installed everything tight.

The shop says there's a very small vacuum leak where the hose comes out of the intake and goes to the brake booster.

I checked its slip-style connector and it does move in and out fairly easily, but they claim the leak is tiny and wouldn't be enough to affect the idle.

Thoughts?

Do throttle bodies ever go bad?

Or could this be the gas pedal itself needing replacement?