i drive a 95 Dodge ram 1500 5.2 V8 2WD and its having overdrive issues, at first all i needed to do was wait for it to warm up then turn the truck off then back on and everything would be fine again as of late tho its not giving me overdrive at all even when i warm it up and restart it so now i only get 1st 2nd and 3erd gears (and they work fine) but if i need to go on the freeway ill be doing 60-65 MPH and be pushing around 3000 RPM thus i need to fix the issue

i did the check engine code thing and got this

12- Battery Disconnect
Direct Battery input to PCM disconnected within last 50 ignition key-on cycles. Normal if battery has been disconnected, otherwise check battery power and ground connections.

45- Trans OD
solenoid circuit
Transmission OD solenoid circuit failure. Open or short in the transmission overdrive solenoid circuit.

37- Torque converter clutch
solenoid CKT or
Trans temp sensor
too high or low
Open or short in CKT wiring or connectors. Voltage out of range at transmission temperature sensor input. See NOTE #1 below

NOTE #1 - From the 1995 TRUCK (Ram) manuals: the trailer towing package includes a transmission coolant temp sensor while the standard package doesn't. The fault code detection system is probably the same for both models. This could cause the low (no) voltage indication....no sensor to send any voltage.

 

Check and see if you actually have the temp sensor. It will be on the cooler line, coming out of the front of the trans.

Sounds like you aren't getting power to the trans. Verify you have power at the three pin connector on the trans, bout halfway back, plugs straight down into its socket.

If you don't already have it, grab the 95 service manual from this thread. Wiring diagrams are in there.