DukeH

I have a 99 grand Cherokee 4.0 it cranks but doesn't start. I tried to troubleshooting to no avail. I stumped any help would be greatly appreciated.

Pic of the lights that are on in dashboard.

DukeH

Also not throwing code with key dance trick and OBD wont link to vehicle.

BlueRidgeMark

Does it get spark? If not, test the CPS.

Does it get fuel?

DukeH

Yes its getting spark..... no fuel.

DukeH

It will turn over for a second with starting fluid.

BlueRidgeMark

How about some history?

DukeH

I've swapped relays to make sure they were working. Pulled fuses to make sure nothing was blown. Checked wire a CPS it was replaced about a year ago. Disconnect it and tured key to on to see if any of the gauges moved and nothing. I swapped PCM to identical one flashed to my vin. Same symptoms nothing changed. Pulled dash apart to check wiring everything looks good and im able to reset odometer if that means anything. I assume its working. I get a single chime with key in on position i read somewhere that is the SKIM communicating with PCM or at least trying to. Im stumped.

DukeH

Nothing glaring indicating it was failing just died on us. The worst part (other then having a broken down vehicle)is not being able to get a code to figure out what is wrong.

dave1123

The gauges aren't active either. The PCM is not active. You've lost connection somewhere. Check the ground wire to the PCM.

DukeH

No gauges aren't active at all. I received another PCM today and still nothing. 2nd pcm so i don't think its that. I plugged it in with battery disconnected and then with battery connected and when i plug the middle cluster in the fan turns on for a second or two. Would that indicate a good ground?

DukeH

History listed just below. Appreciate your help.

DukeH

Checked and cleaned every ground wire i could find today. Still nothing.

DukeH

It just dawned on me my window regulator on passenger side broke the same day any chance that is causing a short.

DukeH

@dave1123 i did notice a little movement in volt gauge not much but it definitely did move. Grounds are all cleaned and reattached. Still wont turn over. I tried with 2 different PCMs after grounds were cleaned. I accidentally plugged my original pcm in with battery connected and i heard relays clicking and my fan turned on for a second. Does the mean anything?

dave1123

In order to get it going soonest, I suggest you have someone with a DRB scan tool look at it. That tool can scan all the systems and determine what's causing the problem. It's out of the realm of diagnosing it via keyboard. Sorry.