Not sure what year your truck is, but the instructions from PATC that came with my mega viper transmission indicated the 2001 factory external cooler has a built in 100 degree F thermal bypass. Meaning the fluid bypasses the cooler until it warms up. Not sure if you will be able to flush it.

 

Oh, okay. Do you know if those instructions are a pdf on their website? My truck is a '99.




EDIT- I did not see any instructions nor tech info on the PATC site.

 

I believe I've read before that the point of routing the transmission lines through the radiator was to actually WARM it up to operating temperature. Which, from a Texas perspective, seemed absurd. Not that I've ever been particulary well informed...

I haven't looked, but are transmission temperature gauges usually mounted on the pillar for our rigs? VDO gauges?

 

I have heard that too. But I believe he was talking about the tow package aux cooler.

The trans temp gauge can be mounted wherever you like...

 

 

I tried find the web site but failed. Let me know if you read this

 

Yeah, it's a bit hard to read but it looks like it is referring to the cooler inside the radiator in #2, not the tow package aux cooler. I have a new radiator, so we're good there.

I cannot read #6 well enough. I see that it does say something about the aux cooler but the rest is too fuzzy.

Edit-I saved the image and printed it. Printed, it's fuzzy, but I looked at the image on my iPad and now I can read it. Thanks.

 

#6:
On 1996 and up Dodge and Jeep rear wheel drive overdrive transmissions there may be a factory installed auxiliary transmission cooler near the radiator. There's a bypass tube in the auxiliary cooling lines near the auxiliary cooler. When flushing the transmission cooler this bypass tube may be overlooked misleading you into thinking that the auxiliary transmission cooler is free flowing. This cooler bypass has a thermal valve that doesn't close until the fluid temperature reaches 100 degrees. When the bypass valve closes and the auxiliary cooler is stopped up there will be no cooler flow. The auxiliary cooler can't be cleaned out due to it's internal design. If the cooler is stopped up the transmission may have a stalling condition in reverse and/or repeated planetary gear failures.

Hope this helps

 

My trans likes to get real hot in overdrive at anything 70mph or higher. Temporarily solved that with 2 Hayden 405s lol. Temp runs 150-170 consistently no matter what I do. Before overdrive would rise all the way to 200 then kick me out. Sensor is in the pan.

 

I mounted the temp sensor for my gauge in the remote filter head. I made a bracket for my cooler, I used 1/4" flat bar, that's what I had laying around. You could use some flat building braces from your local builders supply. Now, to see what temps I'm getting...




(no comments on the welds, please...)