Sluggish under load
#1
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Location: Mass
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Year: 2001
Model: Cherokee
Engine: 4.0
Sluggish under load
Im working on my freinds 98 xj with 160k. The engine starts and idles fine and all the low end power is there but when climbing a hill or on the hiway its much more sluggish than my 01. When in neutral it will redline at 5k rpms just like my xj but when driving it wont go past 3k rpm. The fuel pressure holds at 50psi when idling and at high rpm's and the airfilter and spark plugs are new. Im thinking a clogged cat. Any imput would be greatly appreciated.
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Year: 2001
Model: Cherokee
Engine: 4.0
#6
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Year: 2001
Model: Cherokee
Engine: 4.0
I teied cleaning the throttle body and IAC and it seemed to help but was not the cause of the problem. I will try the cat when i replace the muffler and tail pipe.
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#9
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Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
What these two folks before me said. OP, how is it shifting. On flat level can he slam the peddle and have it shift into third to overtake someone. Maybe just the AV cable needs to be adjusted. And don't redline hour jeep in neutral. You never know the condition of the engine. Don't want to throw a rod by accident.
#10
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Year: 2001
Model: Cherokee
Engine: 4.0
Its bone stock and it feels like its shifting properly. And for passing on flat road its good its just that extra kick for hills and hiway that its missing.
#12
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Year: 2001
Model: Cherokee
Engine: 4.0
We got the jeep about 2 weeks ago, new airfilter, oil, oil filter, changed transmission and T case fluid, spark plugs, water pump, T stat. The cap, rotor and wires have not ben changed. But the wires do not look factory
#15
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Year: 2001
Model: Cherokee
Engine: 4.0
No it runs nice and cool around town and on the highway. And we do get a engine light sometimes and i belive it referes to the o2 sensor after the cat. But i dont remember what exactly the code was
Last edited by TrailRider14; 08-19-2015 at 09:08 PM.