Recent content by dbrub2

You folks have been great in responding to my questions so I wanted to let you know the outcome. I measured the coolant and manifold temp sensors with ohm meter and they were within spec. Measured MAP sensor voltage...it too was in spec. Didn't measure knock sensor and am not sure how to...

Stilll having problems. Removed the TB and cleaned...it was real dirty (240000 miles worth). Pintle on the Idle Speed Stepper motor was really gunked up so I thought for sure that was my problem but when I reassembled the thing the sympton is the same. If I cover the bypass hole the idle...

Thanks. Do you recommend removing the TB to do this or attempt it on the manifold (I'm worried about getting crud into the manifold etc.) Also searching the web I found reference to Chrysler IAC motor that could get 180 degrees out of phase and the harder the computer tried to close the IAC the...

Thanks for the replies...let me try and answer all. First I need to say I screwed up the motor description. I have a 4.0L fuel injected motor not a 4.2L...sorry. Since the last post I have tried unplugging and re-plugging all the sensor connections (MAP, TPS, etc.) to see if there was just...

Chat anyone? LOL 88 cherokee 4.2L 4wd ran fine till yesterday when upon start idle went to about 2500 rpm and never returned to normal. throttle not binding and lever resting against idle stop screw. Any suggestions?