I just got a 89 Jeep Cherokee that my brother gave me outta his salvage yard, looks clean, has a lift supposedly just needed a harmonic balancer. I put the new balancer on, turns over just fine, no fire tho. So checked the coil, no spark. Installed a new coil, no spark yet.
So then I put on a cps (crank sensor) still no spark. I got to digging around on the thing and it looks like it has had a new computer installed on it not to long ago, along with the updated harness for the crank sensor. I am at a loss here, it also has a brand new alternator.
Any help would be great, I did go through and check a bunch of the wires and they all seem to test out good.

 

start with the cps, again. do your testing as this article will show you, if you still have issues lets break them down.

start here: http://www.lunghd.com/Tech_Articles/...iagnostics.htm

 

I just put a new cps on last night, still no luck

 

even a new CPS could be faulty...

where is it getting no spark from? are you testing from the distributor, or from the wire coming directly off the coil?

 

I am getting no spark outta the NEW coil, or when i put a plug in any of the wires and ground it out.

 

and you checked the fuses, power wire to the starter and the power wire from the ignition, correct?

 

If I remember corectly the yellow wire on the coil should hve 12 volts coming off of it when the switch is on

 

do you have a wiring diagram?

 

If you dont have one send me you email and Ill send one to you.

 

I will double check everything you mentioned above, but it is cranking over just fine. I will check the wire for 12v also. Thanks for every1's input, keep it coming, it's much apprecitated!

 

Are you getting spark to the distributor

 

accept now i think i got a fuel problem