Rough running '99

Reply Subscribe

Thread Tools

Search this Thread

09-03-2013, 08:33 PM

KittleJr

Newbie

Thread Starter

Join Date: Jul 2013

Posts: 8

Likes: 0

Received 0 Likes on 0 Posts

Model: Cherokee

Rough running '99

I have a rough running '99 Jeep Cherokee Sport. In order to start it I have to pump the gas. Once it warms up it idles high, but runs fine. I have read some other stuff and I was wondering if it could be the crank shaft positioning sensor?

Reply Like

09-03-2013, 09:45 PM

93XJake

Junior Member

Join Date: Nov 2012

Location: Hartford, WI

Posts: 90

Likes: 0

Received 0 Likes on 0 Posts

Year: 93

Model: Cherokee

Engine: I6

Could be the fuel pressure check valve(I believe that's what the one way valve is called) failed

Reply Like

09-04-2013, 01:14 AM

Fester2572

Junior Member

Join Date: Jun 2013

Posts: 66

Likes: 0

Received 1 Like on 1 Post

Model: Cherokee

Engine: 4.0

I had a similar issue with mine and couldn't figure it out and had to take it to a mechanic ( I hate doing that ) he told me it was the battery . I didn't think he was correct as it was winding over ok just wouldn't start or idle properly. I did eventually change the battery and it fixed it. Haven't had a single problem with it for over a year. Go figure.