I did my search, and the closest thing I came up with was a thread from 2009, and the culprit was the OP had de-pinned the harness to clean it. That said, here is my dilemma-
97 Cherokee. Ran fine, then wouldn't start 2 hours post shut-off. Cranks like a champ, but no spark at the coil. No CEL thrown. Only changes to vehicle in last 2 months were as follows-
Complete F/R brakes
New head pipe and O2 sensor
these were done 6 days and multiple start-ups prior to not starting.
New Crank sensor, as I could not get a good reading and let's face it- it's usually the crank sensor, although I had a new one put in 2 yrs and 40k ago. Nothing changed. Battery seemed weak when cranking, so I charged it over night and put on new Marine terminals since the old ones were ****ty, as well as a new coil, as I had a new ones of each on my shelf. (I did the large battery cable swap 18 months ago when I added my winch) Fired right up. Shut it off and it lit right up again and ran for 5 min. Parked it til the teenager came back 9 days later.
No start again. Turned over but sounded weak, so I dropped in a new battery I had been wanting anyways, and nothing.
I tested the original CPS when I got it out, and it tested good per this thread:
http://ift.tt/1UcrH7m
My sensor has flat pins, so I assumed the using the second diagram, it was the middle and right-hand pins.
I have fuel pressure at the rail, and I can hear the pump kick on, so that rules out the ASD. I wire brushed the crap out of all ground points.
I know I need to test the 5v at the CPS and the coil, which would verify the PCM is working (at CPS) and the CPS is working (at coil), correct? Which wires are these? (5v ones, and where located)
Any and all ideas welcome- I'm stymied.
97 Cherokee. Ran fine, then wouldn't start 2 hours post shut-off. Cranks like a champ, but no spark at the coil. No CEL thrown. Only changes to vehicle in last 2 months were as follows-
Complete F/R brakes
New head pipe and O2 sensor
these were done 6 days and multiple start-ups prior to not starting.
New Crank sensor, as I could not get a good reading and let's face it- it's usually the crank sensor, although I had a new one put in 2 yrs and 40k ago. Nothing changed. Battery seemed weak when cranking, so I charged it over night and put on new Marine terminals since the old ones were ****ty, as well as a new coil, as I had a new ones of each on my shelf. (I did the large battery cable swap 18 months ago when I added my winch) Fired right up. Shut it off and it lit right up again and ran for 5 min. Parked it til the teenager came back 9 days later.
No start again. Turned over but sounded weak, so I dropped in a new battery I had been wanting anyways, and nothing.
I tested the original CPS when I got it out, and it tested good per this thread:
http://ift.tt/1UcrH7m
My sensor has flat pins, so I assumed the using the second diagram, it was the middle and right-hand pins.
I have fuel pressure at the rail, and I can hear the pump kick on, so that rules out the ASD. I wire brushed the crap out of all ground points.
I know I need to test the 5v at the CPS and the coil, which would verify the PCM is working (at CPS) and the CPS is working (at coil), correct? Which wires are these? (5v ones, and where located)
Any and all ideas welcome- I'm stymied.
No start...
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