Engine/Transmission (1998.5 - 2002) transmission temp..........again

[Smokin Joes 2500]

I just received my trans temp manifold from Jannetty Racing today. Dont get me wrong its a quality piece but $37. 00 I don't know. Now that I've got one I could make them for anyone for about $20. 00, and that includes labor. Just curious does anyone have a problem with me puting my temp probe in the transmission pan. I figure less dirt is likely to get introduced this way, than cutting the lines (in tight quarters no less, glad I don't have a "Flower Choke" truck) just want to be safe with the stock slush box... ... . you all know what I'm talkin about:-laf .







P. S. My wife is pregnant with our first, she thinks I'm crazy for telling her we'll let the turbo sing our kids to sleep.

 

[Bob Wagner]

why cut corners??

for less than a hundred buck you can get a replacement line with built in sender port



do it right the first time



The temperature vary greatly

 

[BFC]

What Bob said, I started with the JRE thing and ended up buying the line anyway 'cause the JRE manifold turned into a leaky PITA after about 3K mile. Wonder what their(JRE) truck have on them?



Glenn

 

[RADdodge]

Some Info From Previous Posts...

The pan is ok. The cooler line is a better choice. The differences between the temp sensors mounted in the cooler line and the factory temp sensor located in the transmission can be as high as 150 degrees according to BK. You won’t know how hard the transmission is working moment to moment based on pan temp, but it will give you a good indication for the long haul.



Over 200-210 degrees in the pan, it is starting to get too hot, and when measuring from the cooler line coming out of the transmission its about 280 – 290 degrees.



BK also said that normal operating temps are between 180-190 out of lock up in the cooler lines, heavy traffic, (stop and go). In the pan, normal-operating temps should be 140-150.



This information was from previous transmission posts.



I use the Cooler Line with Sensor Fitting. It cost me about $80. 00 from Mopar4Less. I bought the Adapter w/o Check Valve from DTT for a little over $30. 00. I seldom see temperatures over 170 degrees from the cooler line when hauling my camper around (Up/down mountains, slow fast, etc. )

 

[Big White Beast]

Read the line........

I recently put some cooling fans on the front of the transmission cooler. I didn't notice much of a change in the line temps. So I ordered a second sender and put it in the pan. I can see a 10° drop in pan temps with the fans on a hot day.



Anyway. Even when my transmission line temps are getting way high the pan temps are low. The pan temps barely move. I can see a 80° rise in line temps and only a 10° rise in pan temps at the same time. The transmission cooler works!



After I installed my 180° thermostat in the truck I was worried that the fan wouldn't kick on enough to help cool the transmission fluid is how this whole transmission cooler fan thing came about. I wouldn't waste the money again. It's nice on those really hot days but when idling a long time at a light, it keeps the temps from climbing too fast but other than that the temps seem pretty stable. Oh well one more tool in the trouble shooting arsenal.



Garrett



The 2 switches are, 1 for fans with the LED on when they're running and 2 to toggle between senders.



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[Dr.Kayak]

Garrett: I have the same dual sensor setup you do. I can peg my 250* gauge when monitoring the line temperature on a steep Sierra grade. Did you find the fan you added helped lower these peak line temps? Which fans are they?



Thanks

 

[Big White Beast]

They are SPAL Fans..........

I got the 6. 5 inch fans. I don't know if they help with peak temps like that. I haven't had to fight a too many grades with the truck as it's a working beast and all my runs are local. There are some good hills out here but none have raised the temps too much. It's idling that gets me and even then I haven't gone over 220°.



The fans do push some air though. Having both turn on at once blew a 20 fuse. They run at a little over 10 amps but have a high start up. They were around $90 for both fans so if that number doesn't scare you to try I can give you more info on where I got them and so forth.



Garrett

 

[skerkvliet]

Have any of you guy's tried The Amsoil ATF? It's theONLY synthetic ATF that meets the Chyrsler +4 specs. It will lower the operating temp 20-50 degrees under load.



Steve