I have a 2001 Grand Cherokee with a 4.0. TPS went
bad. I replaced it and now after driving for a few
minutes it will start having random misfires on
several cylinders But you can shut it off and
restart without even stopping and it won't skip for
a few more minutes. If I disconnect the battery to
clear the codes. It takes a good bit farther for it to
start skipping. Note I have have already replaced
plugs and coil rail.
Sounds like an evaporative emissions purge control valve issue. You should be getting a P0443 code if so.
I'm not getting that code. The only codes I'm getting is p0300 and cylinder misfires. And every time I clear the codes it comes back with different cylinders misfiring.
Took it to a dealer. The crankshaft position sensor was failing. The computer was reading a skip that wasn't there. When it tried to adjust that's when everything went crazy.
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