Computer change no start no crank

Tiny
TSAECKER
  • MEMBER
  • 2006 DODGE DURANGO
  • 5.7L
  • V8
  • RWD
  • 172,000 MILES
The engine computer in my 06 Durango lost #3 injector driver.
I obtained a used computer and installed it without connecting the battery back up, had it towed to a repair shop for programing the used computer.
After programing they started it and it ran for 5 seconds then shut off. Now it won't even crank over.
What happened and how do you fix it?
I am about broke and can't afford to just throw parts at this vehicle.
Any help greatly appreciated.
Do you
have the same problem?
Yes
No
Wednesday, September 9th, 2015 AT 11:09 AM

5 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Thats a tough question to answer not being there. Since it was a used PCM, chances are it too is bad. Did it have the EXACT same part number on it?
Was this
answer
helpful?
Yes
No
Wednesday, September 9th, 2015 AT 6:27 PM
Tiny
TSAECKER
  • MEMBER
The part number is exactly the same except for the last alpha character which according to the parts department guy at my local dealer only indicates the vendor of the part.
I could not locate an exact duplicate. I tried for 3 weeks.
Was this
answer
helpful?
Yes
No
Friday, September 11th, 2015 AT 11:40 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
If he is sure then it sounds like a bad PCM again. Odd that it would have the same symptoms. Are you certain none of the wiring is damaged on only making contact on occasion? Are you sure grounds are clean and tight? Any corrosion in the PCM plug or pushed in pins?
Was this
answer
helpful?
Yes
No
Monday, September 14th, 2015 AT 6:05 PM
Tiny
TSAECKER
  • MEMBER
The used module did not have the misfire that the original has. It simply ran for 5 seconds then refused to start, finally refusing to even crank the engine if I am understanding the technician correctly.
From my research and reading of online forums and what the technician relayed to me it sounds like security features have locked out fuel and starter relays.
Most of the posts I read suggest that the only way to eliminate the problem is to replace both the pcm and the bcm.
Now since both modules are basically computers I do not understand why unneeded features or miss programmed instructions or security features cannot be erased or turned off and properly reprogramed. In other words erased and started over again so that one does not have to keep purchasing modules until you get one that will work.
Was this
answer
helpful?
Yes
No
Tuesday, September 15th, 2015 AT 2:15 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Usually, the PCM can be reprogrammed. I never had to replace both. Now, yes, there is a security system, but it shouldn't prevent the vehicle from cranking. Did your mechanic at least check to see if it was getting spark and fuel to the engine before we got to this point? Also, I believe there is what is called an auto shut down relay (ASD) on this vehicle. It can shut down both spark and fuel.
Was this
answer
helpful?
Yes
No
Sunday, September 20th, 2015 AT 6:06 PM

Please login or register to post a reply.

Recommended Guides