WHY IS MY ENGINE REV. UP AND DOWN BETWEEN ABOUT 1000 RPM AND 2000 WHEN IM AT REDLIGHTS OR STOPPED
Jan 15, 2008 at 9:21 AM
BLACKOP555
✓Experienced Mechanic
10,386 POSTS
Clean for vaccum leaks, and check the iac module and its gasket.
toc check for vaccum leaks you start the vehicle and spray the hoses and the intake manifold base with carb cleaner, if the idle changes you found a vaccum leak.