Found this for sale from a private seller for 15k(WA state, our market is crazy, wasn’t finding anything similar for less than 20k without going out of state, was also in a hurry cause I needed something to tow my work boat) Has 300k on chassis, but had a reman motor and transmission 110k ago. Looks like a total delete to my untrained eye, not sure of the tune yet but gotta figure that out. No codes at the time of test drive, actually drove it twice before buying. Everything seemed fine, but when I put the first few thousand miles on, I started popping codes for my pedal sensor, trans solenoid, trans pressure, and a few random others on and off. Really hard down shifts with a clunk, pedal response all over the place, going into limp pedal at times, 4th gear limp mode once

Watched a 3 hr video on how to take the trans completely apart, got mentally ready to spend some money and time on the 68rfe, looking at rebuild options, solenoid options, the works

Climbed around under the truck, inspecting everything while I thought about the situation. Suddenly, I found one of the electrical connectors completely unplugged from the transmission. There are numerous other plugs, going to nothing, because of whatever delete, so I almost missed it the first time. I’m not sure how such a heavy duty connector could unplug on its own, nothing else looks out of the ordinary around the plug. After plugging it back in, she shifts normal, has cleared most codes on its own. I’ll keep my Bluetooth OBD plugged in and monitor everything closely

Seems like I got pretty lucky?

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Yall,

Trying to get some thoughts or ideas before throwing money at the noise. 2016 Ram 1500 - Hemi 4x4 w/ 82k.

Experiencing a medium tone, not extremely loud(Ik this sounds stupid) " mmm mmm mmm mmm" sound while on the highway(55-75mph) Sounds to me like driver side front? Sound goes away if I press on the gas. Is really noticeable if cruise control is on around those speeds.

Running new Falken Wildpeaks AT4. Truck had Wildpeaks before as well, with same sound. Sound continued with new tire change.

Front / rear diff fluid was just changed (IDK condition of oil as it was done at dealer). Engine oil is changed every 4k. I Do have a slight manifold leak (driver side) passenger was replaced about 5k ago (BD Desiel) planning to do the same on driver.

Truck also has magnaflow muffler, but the sound was there on stock muffler as well.

Let me know your thoughts. I appreciate it

\-CAL

Working in a truck for someone who took it apart but didn’t bother to remember where all the grounds go and lost the bolts so can anyone tell where the heck this one goes please (context it comes straight off the battery)

Edit 2008 with the 4.7

I have a 2000 Dodge Ram 1500, 4x4, 5.9l with a 46RE Transmission.  I have been fighting transmission electrical issues for awhile and I am just about at my wits end with it. I was able to drive just fine but had to manual shift (1^st, 2^nd, D), but it would not go from 3^rd to 4^th while in drive.  

Started with these codes:

·       P1762 – Governor Pressure Sensor Offset Volts High or Low

·       P0753 – 3-4 Solenoid Circuit/Transmission Control Relay Circuit

·       P0121 – Throttle Position Sensor, Performance

I changed the Shift Solenoid ( WELLS 2N1202) and then ended up with:

·       P0753 – 3-4 Solenoid Circuit/Transmission Control Relay Circuit

·       P1756 – Go. Pressure not equal to target @ 35-40 PSI.

Noticed that the wires going into the 3 pin plug on the side of the transmission had no shielding left, so I replaced that plug and then got:

·       P1762 – Governor Pressure Sensor Offset Volts High or Low

I also got 4^th gear back while in drive.

I replaced the 8 pin plug just grasping at straws and that did not change anything.

Here is where it is getting frustrating.  I replaced the pressure sensor (ROSTRA 501171) and the 1762 went away, test drive I got 1^st and 2^nd back while in Drive, then check engine light came back on after about a minute with a P0748 – Transmission Control Relay Circuit/Governor Pressure Solenoid Circuit and no more 1^st, 2^nd, or 4^th gear in drive.  

Swapped back to the original sensor, thinking maybe the new one was either wrong part or bad.  Back to the P1762 code.  

I just changed the sensor again, this time the ROSTRA 501017, and same issue as with the other sensor, works for about a minute, check engine light and then back to just having 3^rd gear while in drive.  

I have also cleaned the ECU plugs with contact cleaner and reset the ECU by disconnecting the negative battery cable and holding the key on for 30 seconds.  

Next steps I can try are:

·       Replacing overdrive relays / internal 8 pin.

·       Pulling the transmission and rebuilding with full electronics replacement.

·       Just getting a replacement transmission. 

·       Crying softly to myself.

I also read somewhere that the Transmission Control Relay Circuit/Governor Pressure Solenoid Circuit gets 5 volts from the O2 sensors, if this is true, I can change those and hope for the best as well. 

Any advice or help right now would be amazing!