Miss fire
I have a 2000 Jimmy 4x4. At first it had a
random miss fire I did all the tune up steps an
still had the problem!! I changed upper an
lower intake gasket an nothing change a few
days later it started idling faster so I changed
both idle air an throttle sensor an still nothing
changed rough idle an take off an now high
idle no less then 1200 rpm!!! An help or
suggestions would be greatly
appreciated!!!##become my hero##