Question about 2001 Jeep Grand Cherokee

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Check engine light went on, got a diagnostic. read cylander 3.. replaced spark plug. re set the light but it came back on and its burning alot of gas. coil bracket?

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What the plug fouled? Have you replaced the wire? The coil would be next, but they can check a coil at a place like Autozone.

Posted on Aug 07, 2010

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Posted on Jan 02, 2017

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Sounds familiar. If the engine oil is too full, oil will splash into the spark plug openings. Then, condensation will sit on the oil shorting the plugs. Be sure not to overfill. Also, the valve cover gasket has an inside seal. Once again, oil will partly fill the spark plug hole if the gasket is bad. There is a large hole in back of the valve cover leading right to the plugs. Be careful not to rinse the engine. Gaskets seal the plugs but water can sit on the plug openings.

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96 pontiac grand prix se 3.1 service engine light is on and flashing. car runs bad. sometimes it has no power to get up an go. goes through alot of gas and smells of fuel bad. had it put on computer all...


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Error Code Cylinder 7 Mis-Firing & Vibration When Going Up Hill


yes i would change the plug wires , you can take a spray bottal with water and spray that wire, and if it starts to run real bad then it is shorting out, you may also have a injector going bad you can test this buy puting a ohms meter on it and ck the ohms it should read the same or close to the same as the other if not it will need replaced

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Engine looses power and jerks on 1500-2000rpm


Did you get a Check Engine light? Whenever the "Check Engine" light comes on, there is always a DTC (Diagnostic Trouble Code) stored in the ECM (Engine Control Module). You'll need an OBDII (On-Board-Diagnostics) scanner to retrieve any codes recorded/set in ECM. If no light, then I'd say you have an ignition lead (spark plug wire/insulators) arcing inside one or more spark plug wells.

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