High Idle After Cleaning Throttle Body
1999 Infiniti QX4 VG33 I cleaned my throttle body because the baffle was sticking harder and harder over the last couple months. After cleaning off the 1/32” of gunk my idle went from 750-850RPM to 1200-1300RPM. With the idle high like is, when I put it in D the vehicle wants to move forward. I have to press the brakes harder to keep from moving forward. Then when slowing down from highway speeds the trans downshifts harder than normal around 45mph. I believe it’s actually the lockup clutch
My '95 didn't idle or shift any differently after I cleaned its throttle body. That was an entirely different computer and a different idle control setup, of course, but I'm still surprised cleaning the TB threw yours off that much. If the vac lines are correct, the throttle body gasket isn't trashed, and the FIC isn't stuck wide open for some reason, maybe someone adjusted yours out of spec to compensate for the dirty throttle body? If that's the case, then it sounds like you're on the right tr