99 cherokee running problem
Seasoned Member
Joined: Sep 2009
Posts: 374
Likes: 0
From: columbus ga
Year: 1994
Model: Grand Cherokee
Engine: 5.2
if it was a 02 sensor your check engine light would come on. it would come on if it was any kind of sensor problem so i would worry about sensors right now
okay will it throw any codes without the light coming on r does the light always come on ...also i just had my transmision serviced the day before this started happening but i have checked the plug wires to make sure they didnt knock one off is there anything else they could have hit that would cause this
Seasoned Member
Joined: Sep 2009
Posts: 374
Likes: 0
From: columbus ga
Year: 1994
Model: Grand Cherokee
Engine: 5.2
not that i know of. if its a code the light will come on. unhook the battery then hook it back up and see if the light comes on. mine was throwing a code when i got it and i didnt even know till i unhooked the battery then hooked it back up and the light came on
ceck the fuel pressure while this is happening.. after an over night sit press in the valve on the fuel rail . if it shoots out 4 or more inches then that probably ok."somtimes the pump will bleed down overnight" also check you plugs n wires ,spray your wires with soapy water at night while the engine is runnin, look for a light show. if you see any sparks . Junk them..
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