Having problems with your Jeep Grand Cherokee ?
I have a 2002 Jeep Gr. Cherokee inline 6. Check engine light came on checked the code and it was TPS, in checking TPS found it to be working properly. I erased code. The Jeep is idling rough. Another engine code appeared, it is a misfire on cyl 1. I replaced plugs, have no vaccuuum leaks. Could this be the ign. coil rail?If so is there an easy way to check?
If a TPS code appeared, clean the connection to the TPS. Check you coils to the plugs and look for white tracking indiacting a short to ground which would cause a P0301. Use Champion plugs for this engine and gap accordingly. Let me know what you find.
Repair Help & Product Troubleshooting for Jeep Grand Cherokee
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