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Grand Cherokee 4.0 Sluggish Performance

sertac
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desertdude Rising Star

desertdude

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Posted
On 7/2/2020 at 11:18 PM, sertac said:

Yes that's the way so this Saturday I am planing to visit him

SO! Was this ever solved?

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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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