I have just purchased a 1999 WJ with a 4.7L engine.
When I start the engine from cold the rpm flucuates back and fourth between 2000 rpm and 1000 rpm. When I put in drive and drive the vehicle everything is fine.
It idles about 750 rpm when warm, but occasionally flucuates in idling for awhile.
Any suggestions on the possible cause would be appreciated.
I am uncertain as to whether sparks plugs or other items had been serviced prior to my buying the vehicle.
When I start the engine from cold the rpm flucuates back and fourth between 2000 rpm and 1000 rpm. When I put in drive and drive the vehicle everything is fine.
It idles about 750 rpm when warm, but occasionally flucuates in idling for awhile.
Any suggestions on the possible cause would be appreciated.
I am uncertain as to whether sparks plugs or other items had been serviced prior to my buying the vehicle.