Rough drive.
06-18-2011, 09:26 PM
#1
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Year: 1998
Model: Grand Cherokee
Engine: 4.0
Rough drive.
98 zj idles fine, starts fine. Once the jeep gets warm, it hesitates. I mean a noticable jump. Did complete tune up, tps, oxygen sensor. Any ideas??
06-19-2011, 01:26 PM
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Year: 1998
Model: Grand Cherokee
Engine: 4.0
I do have check engine light on. I had them scanned, says oss sensor on transfer case, and camshaft sensor (on dist.). Replaced them, still have problem.
06-19-2011, 09:02 PM
#7
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Year: 1994
Model: Cherokee
Engine: 5.2
If it did it before tune up, I would replace crank sensor (crank sensor, will throw cam sensor code) If it did after the tune up, make sure that u put copper core plugs in instead of plat, iridum, or any other ridiculious plugs. These motors are sensivtive, and have seen many a problems running anything other then copper plugs.
On a note bout the crank sensor, my jeep had the same prob. Sensor was getting heat soaked. BUT it could also be anything getting heat soaked, including coil or injectors.
On a note bout the crank sensor, my jeep had the same prob. Sensor was getting heat soaked. BUT it could also be anything getting heat soaked, including coil or injectors.
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06-20-2011, 04:45 AM
#8
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Year: 1998
Model: Grand Cherokee
Engine: 4.0
Thanks!! How about the oss sensor on the transfer case? Do you have any idea why im still showing that code?
06-20-2011, 04:47 AM
#9
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Year: 1998
Model: Grand Cherokee
Engine: 4.0
What did you do to solve the heat problem?? I did notice it only starts acting weird once the truck gets good and warm, say 25mins or so.
06-22-2011, 07:47 AM
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Year: 2000
Model: Cherokee
Engine: 4.0
Im a little confused. does it hesitate to go into gear? you say it hesitates then you said that it jumps. can you clarify a little? what is the idle rpm?
Is it when you are already in gear and try to take off or is it actually when you put it into gear?
Is it when you are already in gear and try to take off or is it actually when you put it into gear?
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