Okay... I have posted about this before but I am in need of new ideas. I have an 87 Jeep Cherokee Laredo 4.0 Liter Inline 6 and it likes to stall intermittently when it heats up and then not start again. I have tested it and it is getting fuel but no spark when it wont start up again.
I have replaced:
Crankshaft Position sensor
Ignition control module
Ignition coil
distributor
spark plugs/wires
Throttle position sensor
MAP sensor
ECM

I have to go back to school in 2 days so I am desperate. I am out of ideas as to what it might be. Any help would be appreciated, Thanks

 

I wouldn't assume that your CPS is okay just because it's new. Test it. You're symptoms suggest it's bad, even if it's new.

 

Thanks for the reply. But i've tested both the resistance and the voltage coming off the crank sensor and they both fall within the normal parameters

 

Did you test it at a time when you weren't getting spark?

 

No I haven't... I will have to do that. I've read about thermal failure with the cps, do you think that this could be the problem?

 

That's what I'm thinking, yes.