idle issue?

Reply Subscribe

Thread Tools

Search this Thread

01-22-2015, 04:23 PM

Alvarezxj

Junior Member

Thread Starter

Join Date: Apr 2011

Location: arizona

Posts: 58

Likes: 0

Received 0 Likes on 0 Posts

Year: 1987

Model: Cherokee

Engine: 4.0

idle issue?

Ok so I have a 87 xj and most of the time when I start it it'll idle really high for minutes sometimes as long as 10 mins.. any ideas?

Reply Like

01-22-2015, 04:31 PM

mudslinger960

Junior Member

Join Date: Oct 2014

Posts: 52

Likes: 0

Received 0 Likes on 0 Posts

Just went through the same thing on the '88 I got, looks exactly like yours. When's the last time you did plugs and all that jazz. Clean your iac, and throttle body. Check your vacuum lines. I started going through cruisers renix tips and have been "re-freshening" electrical connections and just finished a tune up and she idles like a dream

Reply Like

01-22-2015, 05:06 PM

Alvarezxj

Junior Member

Thread Starter

Join Date: Apr 2011

Location: arizona

Posts: 58

Likes: 0

Received 0 Likes on 0 Posts

Year: 1987

Model: Cherokee

Engine: 4.0

Last time I did plugs wires cap and rotor was like 15000 miles ago so like 3 years just a weekend toy. Also cleaned iac and throttle body bout a year ago actually replaced iac

Reply Like

01-22-2015, 05:39 PM

mudslinger960

Junior Member

Join Date: Oct 2014

Posts: 52

Likes: 0

Received 0 Likes on 0 Posts

I would start with iac and check vacuum lines

Reply Like

01-22-2015, 07:34 PM

cruiser54

::CF Moderator::

Join Date: Aug 2011

Location: Prescott, Az

Posts: 43,874

Likes: 1,934

Received 1,526 Likes on 1,238 Posts

Year: 1990

Model: Cherokee (XJ)

Engine: 4.0

Sounds like TPS issues with poor grounding issues.

Click on the Pink Link below and do Tips 1 through 5. Heck, I'd do 27 instead of 2 actually.
After that, let's see where we're at.