Another crank no start...

SlowXj

New member
Basic 96 xj 4.0 aw4 231.... 350k plus miles. Died while running. Cranks strong with no start. Parts replaced so far....
Coil
Crank position sensor
Distributor
Cam position sensor
Swapped asd relay

I was lazy and reused cap button and wires for time being.

Had this issue on a wj years ago and the crank sensor fixed it... I used a Mopar unit on the wj. This time I used an AutoZone and it didn't help my condition. I am getting no spark at the plugs and no pulse on the fuel injectors...
Any help is much appreciated.

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Tim_MN

Freakish Hand Strength
NAXJA Member
I strongly recommend only genuine Jeep engine sensors. Most auto parts stores sell cheap crappy Chinese made parts, some that even come with a " Lifetime Warranty". These parts are poorly manufactured and/or made from inferior materials. They are often out of specification, or even failed, right out of the box. The ones that are not faulty many times will have a short service life before they fail. Always buy top quality replacement parts and genuine Jeep engine sensors. Numerous threads detail long and frustrating searches for a "problem" that ended up being cured simply with genuine Jeep repair parts.

Cheap parts are cheap for a reason
 

SlowXj

New member
My next move was to buy Mopar crank sensor... Thanks for reassuring my thoughts.

As a side note anyway to test pcm?

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RCP Phx

New member
I strongly recommend only genuine Jeep engine sensors. Most auto parts stores sell cheap crappy Chinese made parts, some that even come with a " Lifetime Warranty". These parts are poorly manufactured and/or made from inferior materials. They are often out of specification, or even failed, right out of the box. The ones that are not faulty many times will have a short service life before they fail. Always buy top quality replacement parts and genuine Jeep engine sensors. Numerous threads detail long and frustrating searches for a "problem" that ended up being cured simply with genuine Jeep repair parts.

Cheap parts are cheap for a reason
The only problem now is availability, it's getting hard to find any these days!
 

Tim_MN

Freakish Hand Strength
NAXJA Member
any way to test pcm?
The only DIY PCM test possible, is swapping in a compatible used PCM from the junkyard or CraigsList. PCM failure is very highly unlikely, but does happen on rare occasions.
 

SlowXj

New member
Sorry for the late posting, but an oem Mopar CPS was just installed with no results.... I am lost and loosing faith....

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SlowXj

New member
Adding an end to the forum.... I overlooked 1 fuse in the under hood panel... The pcm fuse was blown for some reason. Replaced and all is well.

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