NECherokee
NAXJA Forum User
- Location
- Mass
Hey Guys, first post, this one really has me scratching my head. First let me introduce the vehicle, stock 1998 Cherokee Sport 4x4 4.0L, 42k on the O.D. (yes original), wicked clean.
The issue that I am having occurs after about 60 seconds of run time. Right about when it gets warm. The jeep drops rpms to about 500 then surges itself right before stalling up past 2 grand. It will cycle like this for about 30-45 seconds completely unresponsive to throttle and in any gear. Then everything will return to normal and the jeep will run fine no issues. Its been doing this for about a month and a half with no CEL. All gauges (volts temp and oil pressure) are reading fine during the occurrence.
I did my research and most frequently VAC leaks came up. I checked all lines on the intake manifold and sure enough I found and fixed one. Much to my dismay this did not fix my problem. After more research I decided to swap the IAC. Still no fix so I consulted a local mechanic who told me maybe it was the MAP sensor. Swapped that out and had him reset the air/fuel ratio. Problem still exists.
Before I go pouring money into every sensor/electrical component on the jeep I figured I would consult you guys for some help. Any suggestions??
Thanks.
The issue that I am having occurs after about 60 seconds of run time. Right about when it gets warm. The jeep drops rpms to about 500 then surges itself right before stalling up past 2 grand. It will cycle like this for about 30-45 seconds completely unresponsive to throttle and in any gear. Then everything will return to normal and the jeep will run fine no issues. Its been doing this for about a month and a half with no CEL. All gauges (volts temp and oil pressure) are reading fine during the occurrence.
I did my research and most frequently VAC leaks came up. I checked all lines on the intake manifold and sure enough I found and fixed one. Much to my dismay this did not fix my problem. After more research I decided to swap the IAC. Still no fix so I consulted a local mechanic who told me maybe it was the MAP sensor. Swapped that out and had him reset the air/fuel ratio. Problem still exists.
Before I go pouring money into every sensor/electrical component on the jeep I figured I would consult you guys for some help. Any suggestions??
Thanks.