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Aug 26, 2008 | 03:51 PM

forbyer

Thread Starter

Newbie

Joined: Aug 2008

Posts: 6

Likes: 0

Year: 1990

Model: Cherokee

Engine: 4.0

wont start

1990 cherokee. Drove it the other day parked it and now it just cranks its not getting any spark to the ignition. OR the destributer. Any help would be great. 90 4.0

Aug 26, 2008 | 03:56 PM

okcjeeper

::CF Administrator::

Joined: May 2008

Posts: 10,039

Likes: 16

From: Okc area

Year: 1991

Model: Cherokee

Engine: 4.0 I6

I am going to guess CPS (Crank Position Sensor).

Aug 26, 2008 | 04:23 PM

BlueXJ

Renix Super Guru

Joined: Mar 2008

Posts: 24,653

Likes: 19

From: In yourz postez fissin jurr spelinzs

Year: 1990XJ/1989MJ

Model: Comanche

Engine: 4.0L Renix

Try this little trick. Unplug the cps and clean the plug as good as you can then plug it back in and repeat about 4-5 times then after it has been plugged in the last time try and start it. If that works then you will have made a temporary fix. a new CPS ASAP will still be required. If that doesn't work then let us know and we will try a couple of other things. In the meantime check that you are getting fuel pressure on the rail and that spark is your only issue.
Blue