ok just manned up an ordered a new pcm. From autocomputerexhange.com
Good thing is they are in south florida so should be here pretty quick. I pray that is i just cleaned and added two more grounds.(now i have 6 grounds). and checked for voltage from all sensors they are all working just still not getting a signal from PCM to the coil.

 

got pcm in today. Well put it in fired right up said cool so finished hooking up radiator and all that and fired her back up noticed the gauges didnt work....wtf... they work fine with the old PCM but motor wouldnt run.
Then i noticed the alternator wire wasnt hooked up so turned truck off and ran alternator wire and boom now it wont start again. unhooked wire thinking wtf its worth a try and boom still no start.

By the way they are sending a replacement for this ecu cause they said the gauges is there fault must be common

 

ok got one pcm yesterday and it ran the truck but no gauges..... so got another one today from autocomputerexhange.com got it same thing ran truck but no gauges.....so i put old Pcm to see if it worked the gauges yes it did but truck still didnt run....at this point i dont care about gauges i will get mechanical ones. so i put new pcm in and now truck wont run wtf.... seems i get one start out of a pcm then it wont send a signal to the coil please help.

 

codes i get
with new pcm i get 920 921 950 999
old pcm i get 950 999

but new pcm ran truck one time then wouldnt....is there a reason my truck could be burning up pcm's it ran for about 40 minutes with no isses then nothing

 

The codes you're providing are not from the PCM. They are from the cluster itself.

999 - "an error has been discovered."
950 - "The cluster is not receiving an ABS lamp-on message from the CAB"

920 - "The cluster is not receiving a vehicle speed message from the PCM"
921 - "The cluster is not receiving a distance pulse message from the PCM"

What year/model PCM did you put in? Was it for a Dakota?

What's up with the CAB? Is the fuse in place?

Do you have any P-Codes?

 

Hmm , I wonder if this guy you are getting your PCM's from is the same guy they say to stay away from on jeepforum ? Seems to me , the PCM is the issue .

At this point , I would take apart the original PCM and reflow all the solder joints . I've heard of the oven method too , 360*(solder melts) for X number of minutes . That one is not for me

Same issues :
http://www.*********.com/forums/showthread.php?t=63590
http://www.*********.com/forums/showthread.php?t=361014

 

yes i get 5volts at the pcm for the crank...its crazy cause truck has starts as soon as i get a new pcm it starts but it only starts once then never again its like my truck makes the pcm go bad

 

yes the cab is in good if i put in stock pcm truck has gauges just wont fire....so i ordered new pcm it fired but no gauges.... got another new pcm no gagues but it fires.....But it will only fire one time then it will never fire again this has happened on two (reman) pcm

 

when you say CAB what fuse are you refering to

 

dead links at this point i am about to burn down the house with the truck in the garage...so what is this oven method you speak of lol