rustydeeretech

well my truck wound shift into over drive shifts 123 nice and hard but no o/d does any one have the schematic for the overdrive override or does that have a relay any ideas would be helpful also the truck wont idle how do i turn the idle up on this pump thank for all your help neal

ACLinc

I have the same exact issue with my 1997 D2500 automatic tranny. A few months back my truck began idling rough; then I took it on a 1,000 mile round trip up to Oregon and on the way back down the I-5 freeway it suddenly dropped out of overdrive. The truck is now really slow off the line even when warm, but still shifts fine except for the fact that it will not kick to overdrive when you reach 55-60 MPH. I know it is not the TPS because I quickly swapped one from my 96 which works fine. Any Suggestions for us?
Thanks

infidel

Check the tranny temp sensor or the brake light switch.

rustydeeretech

where is the trany temp sensor located at by the shift solenoids? does it matter if the light comes on when i turn the key on then it goes off like it should ? could it still be bad

ACLinc

I got my codes checked today and ended up with EGR error code on my 1997 which I am assuming is the cause of the rough idle. Also came back with trans solenoid code which will involve draining the transmission and dropping the pan to replace the solenoid.

Perhaps these are the issues you are having too.

Have you retrieved the error code history? That might be very helpful.

Andrew

infidel

No way to know if you don't tell us the year of your truck.

rustydeeretech

well i dont have any codes but that is what im working on replacing right now i just dropped the valve body tonight and have the new solenoids to go in we will see tomorrow after work, cross your fingers and infidel its a 1996 47re and is it true that temp sensor is only on the plow prep truck or all of them

infidel

On the RE tranny the temp sensor is internal.
Only way I of to check it is with a scanner.