I have a 99 Jeep Grand Cherokee with the 4.7 V8 with 80,000 miles.
It has a problem with the idle oscillating up and down a few hundred rpm when it's cold or hot. Sometimes when I stop at a light the transmission will hold a higher gear for a few seconds after I stop and then I can hear and feel the transmission kick down. There are no codes when I plug in an Auto XRay 5000 scanner.
The engine and transmission have been serviced regulary
Could this be an idle control valve going bad or something else?
Any suggestions will be highly appreciated.
Thx Rick :roll:
Friday, May 3rd, 2019 AT 1:59 PM
(Merged)