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post #1 of 2 Old 05-18-2013, 07:26 PM Thread Starter
fordguy101
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Join Date: Feb 2013
Location: manchester
Posts: 25
Help!!

jeep liberty 2005 4x4 3.7 v6


got codes for a number 1 and 4 cylinder coil replaced all 6 of them and spark plugs...still missing....so replaced crank,cam,tps, cleaned TB,seafoamed....as soon as it starts engine is missing shaking...put it in gear stops til i come to a stop then rough idle...get out on the road runs great til i get about 50-60 or try to smash the gas it bucks and speedometer needle jumps back and forth til i let up then it goes and have to ease back into it...


had it at dealer charged me 90$ to get me codes i already had...telling me they want to chase wires.... at 90$ a hour or replace pcm(but not sure its the issue)....anyway know what to try next...erased codes after i replaced the coils no check engine light but still messed up...almost seems like it maybe cata didnt get much smoke on seafoam wonder if it clogged?

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post #2 of 2 Old 05-18-2013, 09:25 PM
streetglideok
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2005 KJ Liberty 
 
Join Date: Jul 2011
Location: Castle Pines
Posts: 3,115
Check compression on all cylinders, and also hoo ka vacuum gauge to manifold vacuum while it is running to look for pulsing. Just a heads up, seafoam is about as useless as mammary glands on a boar hog. It isn't strong enough to clean anything really well. You need alot heavier duty stuff if you want to loosen crude up.
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