SPONSORED LINKS

I recently acquired a 97 Jeep Cherokee 4

Tiny
ANONYMOUS
  • MEMBER
  • 1997 JEEP CHEROKEE
  • 66,000 MILES
I recently acquired a 97 jeep cherokee 4.0 4x4 with 66000 original miles. I bought it without it running but it cranked just fine just no spark. Since then I determined the crank sensor, fuel pump, PCM, and alternator were bad. The alternator was locked up, the PCM the previous owner swapped with a junkyard one. I now have proper fuel pressure, good spark, correct timing, and good compression. It cranks and cranks, but will not start.
SPONSORED LINKS
Friday, November 2nd, 2012 AT 3:47 AM

1 Reply

Tiny
DRCRANKNWRENCH
  • MECHANIC
  • 3,380 POSTS
I would be suspect of the PCM. Make sure it is the correct part number for your vehicle. You can do this by looking up a used parts delaer on the internet and looking up the PCM and its part number then compare it to yours to be sure.
Otherwise there is an electrical issue of some type and that is a diagnostic process of elimination.
I am attaching wiring diagrams for the 4.0L. Use them to check that the wiring and gounds are good for the ignition system.
Images (Click to make bigger)
Thumb
Thumb
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, November 2nd, 2012 AT 11:23 AM

Please login or register to post a reply.

Related Engine Not Running Content

How to fix an engine that wont start
VIDEO
How to fix an engine that wont start
Instructional repair video
Engine Not Starting
GUIDE
Engine Not Starting
Over the past 20 years at 2CarPros we have identified the top problems that are easily fixed. This guide can save you a trip to the repair garage or calling a tow truck and...
VIEW MORE

Sponsored links