2000 Dodge Ram 5.9 Ok so i rebuilt my transmission and low and behold i get the P0783 code. I went ahead and replaced both sensors and about fifty miles latter the code returned. Thinking maybe the sensors were bad i took them back to the shop and got two new ones. I replaced the sensors and the code returned. Any ideas on what to check. I rebuilt my transmission with a certified mechanic so i don't believe the trans was built improperly. Thanks for any help with this.

Rich

 

P0783 3-4 Shift Sol, No RPM Drop at Lockup

Verify you are getting 12 volts at the PCM (connector 2, cavity 21, brown wire.).

 

I checked the number 21 wire on the second connector and am not getting 12 volts.

 

Do you get overdrive at all?

Engine running during test? (probably should have mentioned that before.....)

 

Oh. I will check it while running. Haha

 

Was your problem solved? I just got my '98 5.2L 46re back from the shop - rebuilt but OD seems to be acting strange - almost freewheeling during coast (1,000rpm), then lightly "slamming" back into gear on acceleration. Also seems to rev higher at 60 mph than before the rebuild... about 2,400rpm. Threw a code today, but haven't checked it.

 

If you are at 2400 RPM at 60mph, you aren't getting O/D.

 

Thanks, HeyYou. I kinda thought so. When I hit the switch under load (at 60 mph), the RPM's only increase by about 100-200 - before the rebuild, it would immediately jump by about 600-650! Bring it back, I guess...

 

Did you change the TC when you rebuilt the trans?

 

Yep - Brand new TC. Checked my code - P0340 - Camshaft position sensor circuit malfunction. If I clear the code, supposedly the OD will go into lockup. True? Now I need to track down the circuit malfunction. I have been ignoring it - maybe that is a bad idea!?!