once in a while, while in park the jeep revs to about 2000 rpms then off up and down while the jeep shakes and rattles a bit, ive been told it may be a dirty fuel filter and the jeeps not getting enough fuel any ideas? and also does anyone know why it takes me 10 mins to fiddle the key to get it to start? is that from the cold?

 

Pull your idle control valve, clean it, try again. I doubt it's the fuel filter.

The key problem is either lock cylinder itself, the electronic switch behind the key, or the starter solenoid. If the starter clicks a few times before starting, it's probably the solenoid.

HTH

Collin

 

well my engine light actually just came on, got it checked and it says high voltage from the o2 sensor? can that be the problem at all?

 

That shouldn't cause any of the issues you're experiencing.