Bogging at WOT
#1
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Year: 1990
Model: Cherokee
Engine: 4.0
Bogging at WOT
Ok so Ive got a new problem with my jeep. Its not really bogging, its more of a loss of power at WOT. The engine wont go above 3000RPM even with the peddle floored. I used to be able to floor it and it would almost redline and run beautifully. I also want to note that in park and neutral it revs up just fine.
Some background info:
Year: 1990
Engine: 4.0
Trans: AW4 4WD with NP231
Things checked and already ruled out.
-fuel pump
-pressure regulator
-fuel filter
-sparkplugs, cap, rotor and plugs
-tps
-cps
I also want to note the jeep was running perfectly fine before I tore up my yoke and dropped the driveshaft going down the highway. I replaced the yoke and the driveshaft and now my jeep has a major loss of power. It also only does this while in gear. In neutral or park I can rev it as high as I want and it sounds fine. Any thoughts?
Some background info:
Year: 1990
Engine: 4.0
Trans: AW4 4WD with NP231
Things checked and already ruled out.
-fuel pump
-pressure regulator
-fuel filter
-sparkplugs, cap, rotor and plugs
-tps
-cps
I also want to note the jeep was running perfectly fine before I tore up my yoke and dropped the driveshaft going down the highway. I replaced the yoke and the driveshaft and now my jeep has a major loss of power. It also only does this while in gear. In neutral or park I can rev it as high as I want and it sounds fine. Any thoughts?
#6
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Year: 99
Model: Cherokee
Engine: 4.0
i know, right!! its a head scratcher... then again, the last time i was under there pullin the front DS i managed to strip ONE of the 8 bolt heads, making the job futile... maybe he ran into the same issue? idk, ive seen the jeep around before and i know the people are pretty red... lol, but whos not around here, at least to some deree...
... i mean redneck, not ginger... haha...
... i mean redneck, not ginger... haha...
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#10
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Year: 1990
Model: Cherokee
Engine: 4.0
Its a 1990 renix, that means it doesnt store codes. Also the rear yoke is the one that blew up and dropped the rear shaft. I cut the engine as soon as I heard it snap and was going maybe 15mph. I cut it off before it did any damage. The jeep underside visually has no damage I can see. Not a scratch actually and I believe the driveshaft just hit the ground pretty much. All the sensors are still connected also. I have a feeling my fuel pump I just recently replaced is garbage.
#13
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Year: 2000
Model: Cherokee
Engine: 4.0 HO
#14
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Year: 1990
Model: Cherokee
Engine: 4.0
Finally found out the problem with the jeep. It turned out to be a bad fuel pump that I had received. Returned it and got an OEM one. Now it runs fine. The driveshaft was just a coincidence. BTW I was on the merge lane on the highway and had just pulled out of a shopping center. So yes I was going 15mph on the highway when it tore off. Note to anyone else ever doing a fuel pump swap NEVER USE THE AIRTECH **** PUMPS!!! You will save yourself soo much trouble. I went through 3 with the parts store and finally was fed up and got a bosche one.
#15
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Year: 1990
Model: Cherokee
Engine: The venerable 4.0
Am I the only person in the world that got a good Airtec?? I wo.t buy that brand again from what everyone's feedback is but Jeeeze I feel lucky.