engine light on then back off
Just bought a 2004 Jeep Cherokee. Sometimes the check engine light is on and then sometimes its back off again. The owner I bought from had mentioned that it needs a upper control arm could that be why its on?
No clue, you need to scan the Truck for the codes. Post the 4 digit codes bad here and we'll go from there. Most local auto parts stores will scan for free.
I just read that a loose gas cap could cause this problem
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