Hello , I have a 1996 Dodge 5.9L cummin's 4x4 Automatic. I purchased the vehicle with these problems, engine was not working. (1st issue) I keep getting a trouble code P0117 "Engine Coolant Temperature Sensor Circuit Low Voltage." I replaced the left rear engine coolant temperature sender (has only one wire). I cant find any other temperature sensor. This code P0117 I think is affecting my transmission, (2nd issue) the 47RE transmission is working good till it gets to about 50 mph- 65 mph, the RPM'S are at 2000 (50 mph) and at 65 mph (2500). The truck will not go over 65 mph. I did replace the governor pressure sensor, governor pressure solenoid, replaced the fluid, Cleaned out the valve body(note: valve body looks like someone over tightened), replaced PCM. note- it does have a banks torque converter and intake. The engine was pulled from a 1995 dodge diesel (non- 4x4) the banks system was on the 1995(dont know if this matters). I did perform hydraulic test on the governor pressure port, at idle it was 1.5 psi and as i slowly increase engine speed in drive the pressure would increase ( 20 mph-psi=33), (30 mph- psi=55), (40 mph-psi=56), (50 mph-psi=56), (60 mph-psi=56). I also performed hydraulic test on Overdrive Fourth Gear (road test) I installed a 300 psi gauge on the overdrive clutch pressure port plug. The pressure while driving was (20 mph-psi=0),(30 mph-psi=25), (40 mph-psi=25), (50 mph-psi=25), (60 mph-psi=25). I'm out of idea's, I wanted to see if anyone knows about these issue's before i decide to open up the transmission and inspect it. I would appreciate any help. Thank-you!

 

I *think* you should have another, two-wire coolant temp sensor. Supposedly, it grounds thru the EGR control module..... I can't find where it is though......

Sounds like you aren't getting Overdrive....... is the cel on? Does it test when you first turn the ignition on?

 

This cummins doesn't have a EGR Valve or other ECT (egr)

 

Just going by what I find in the service manual. Get one here.

 

I'm getting the same in the repair manual, but it points out that its for a 5.9 v8. It also states that the EGR Module would be located underneath the air filter (but there isn't any egr module there) I do appreciate the help .

 

My truck was a Cummins before I swapped it for the 5.9 V8 I can ask my diesel buddy who specializes in Cummins if you still need help

 

I would definitely appreciate it -MoparFarnatic21.