Yesterday my 2000 durango 4.7l lost power. #3 cyl. Coil was melting. I installed new plugs and a new ign coil and restarted the engine. A minute later the same coil started over heating. I was told that a faulty pcm would do this. Does that sound legit? I picked up a used pcm from a pull-it yard (same part #s) but now it starts up , runs good for a few seconds then shuts down. Any thoughts?

 

Welcome to DF! Moving this to the Durango section.

 

The PCM have to be programed by the dealer to your VIN #.. You cant just pull one from a junk yard and put it in yours, that is why it starts up and then shuts down.

 

yup sounds like the security in the used (new to you) PCM is kicking in and shutting off the engine bc there is a VIN mismatch