I have a 2000 jeep GC 4.0 4x4 its not starting up! It seems it is some some sort of eletrical problem because there is no fire to the plugs and no pressure to the fuel line. I have replaced the crank position sensor and crank shaft sensor the (cps is loads of fun!) Any ideas as to what would cause the fuel pump problem and lack of spark? Could it be a bad computer? Also I had a friend with a Mechanics diagnostics comp hook it up and it was unable to sync with the jeep. Thanks for any help.

 

Check the codes yourself.>>->http://www.wjjeeps.com/faultcodes.htm
Check the ASD relay and fuse in the PDC under the hood.>>->http://www.wjjeeps.com/misc/power_dist_ctr.jpg
And a detail dia. of the PDC.>>-> http://www.wjjeeps.com/misc/power_dist_ctr_02.jpg

 

if the ASD relay was bad would that keep a OBDii from reading the problem?

 

I don't know but if you follow the directions I posted above you should be able to read the codes yourself. It works on my '04.
Dan

 

hmm i see what your saying now.. i will take a look at the codes when i am sobered up tommrow =)