2006 Auto 4.0 PCM/ECM Codes

[Curteze]

Well I’ve had the tough shifting since I bought the jeep with 60k, it’s at 107k now. I usually would just “flash” the pcm every time I got gas and this would sooth the issue. Today I checked my codes because I usually have he good ole O2 sensor. But was surprised to see a list of codes:
P1604 - PCM INTERVAL DUAL-PORT READ/WRITE INTEGRITY FAILURE
P0700 - TRANSMISSION CONTROL SYSTEM (MIL REQUEST)
P0613 - INTERNAL TCM

I flashed it again today and they went away and stayed off, should I go ahead and order one of the aftermarket ones offline? Has anyone tried those before?

 

[Chris]

I'm no expert on this matter, but is it possible your TCM is faulty?

 

[KMET]

Oh, I've gone through tough shifting too, and the occasional stall while backing up. My Jeeps @ 62K. Never saw a code....

After cleaning my throttle body I noticed the TPS (Throttle Position Sensor) sensors round springy part wasn't that springy, had some slight play to it.

Swapped a new one in from Napa, and just like that, everything went smooth.