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HELP!!!!!!

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Old 05-12-2010, 02:24 PM
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Year: 1989
Model: Grand Cherokee
Engine: V-6
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I have a 1989 jeep grand cherokee v6 automatic, started backfiring in the throttle body and lossing power, when starting up you give it some gas it will die. Ok I have put new fuel injectors and fuel pump on it and new spark plugs and wires, new alternator,new air filter,new TGR value, new fuel filter, have checked the exhaust values , timing, replaced the catalytic converter, I have checked the piston rod they are fine.
I am stuck as to what it could be any ideas or help would be a blessing.
Old 05-12-2010, 02:36 PM
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what is the compression on all the cylinders ?
Old 05-12-2010, 03:09 PM
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not for sure I had a garage check that out about 3weeks ago which I was told it was fine.
Old 05-12-2010, 03:22 PM
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backfires threw the intake happen when eather... a valve is hung open burnt, cam lob gone.... or when there is not enough fuel... and the spark/flame go hunting past the combustion chambor....
check the crank position sensor ?
try another garage ?
we had a truck come in once...had a tune up done and was running ruff.. place that did tune up acually builds race cars... they had 2 plug wires crossed and couldnt find it..
Old 05-12-2010, 03:52 PM
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V6 for real??? Lol
Old 05-13-2010, 05:33 AM
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Welcome, from Wisconsin.
Old 05-13-2010, 07:22 AM
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Moved to tech...
Old 05-13-2010, 11:29 AM
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I will check this out today and let you know what I find .thank you

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