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Grand Cherokee 4.0 Sluggish Performance

sertac
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Frederic
Frederic

Shoot that Mechanic.... I've heard the same excuse from incompetent mechanics so many times before. If they can't find it they just start throwing excuses around. There are many possible rea

Barry
Barry

Did you check fuel pressure at idle and under load? Also look at AFM gm/s and compare it with factory data or a known good engine. More accurate than just unplugging it and seeing what happens  

desertdude
desertdude

I'm with Fred, shoot your mechanic. Seems like a case of blocked exhaust to me too. Simple check by hand while reving to see if the exhaust is blowing out enough. At night drive your car aro

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sertac Community Regular

sertac

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50 minutes ago, desertdude said:

SO! Was this ever solved?

I am letting the car go as it is. I didint take the car anywhere. I will give it cheap to the buyer as it is. 

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