Temp Probe Location

[ropinfool2]

I have the 48RE and want to install my transmission temp probe. Somewhere on this site someone said they installed it in an 1/8" pipe plug on the passenger side of the transmission, I have 5 plugs on this side, so which one do I use? I don't want to start pulling these out, with my luck it would ruin the transmission. Is there an easier/better place to put it? Thanks. John

 

[ropinfool2]

Anybody???? John

 

[CarlJensen]

Why don't you get Pablo to pick you up a line from 94/95 truck? Install a 3/8 to 1/8 NPT bushing in line port and install probe. Gives you hot temp heading for the cooler. I have this and it works very well and measures oil at hottest point.

 

[Bob4x4]

It is a Dodge part ... ... ... ..... not cummins



Bob

 

[ropinfool2]

Ok Bob, will this part fit my 03? If so, what is involved in replacing it and how much will it cost me? Thanks. John

 

[jawmail]

Get the Diesel Dynamics line to put on the trans outlet line. That is what I am getting. It's $80 but already has a 1/8" port for the probe. It gives the hottest readings (most accurate). The ports on the side of the trans. can be inaccurate IMO.

 

[jawmail]

Sorry I meant the line from massdiesel.

http://www.massdiesel.com/d24/amtransmission.htm

 

[Joe G.]

The line pressure test port has about the same reading as the cooler line. I recently replaced my stock temp sensor with a resister because I was having trouble with the trans getting warm enough to shift to OD. When I did that I moved the trans temp sensor from the line pressure test port to the cooler line. As far as I can tell the temp readings are the same in the same situations. A look at a flow diagram in the service manual makes me think that the temp will be the same or close in both locations. If you use a solenoid pressure test point the temp readings will be way low. I did not answer this thread earlier because I don't know if this situation is the same for a 48RE. It probably is. Some members have reported that the temp sensor bottoms out in the line pressure test port. That may depend on the brand of gauges you have. I have Westach.