Transmission Temperature Gauge
Go Bills !
Joined: Jan 2008
Posts: 2,778
Likes: 65
From: Buffalo, NY
Yea Jay, Had a guy call me about this same issue. I told him to do the boiling pot check. He did and called me back, "ok still no work, what next". I asked him to run a ground jumper to the sensor while in the pot, using jumper cables for ease of the grippers. He called me back and said it worked great. "why don't it work when i screw it in the transmission". I asked about teflon tape and he did used it. I told him to remove the teflon and all was good after that. He got the gauge from autozone for some car he was working on.
Laughing Gas
Joined: Oct 2009
Posts: 831
Likes: 2
From: Vacaville, CA
15 miles into town, run around town for 30 minutes then 15 minutes back. No freeway speeds, outside temp in the upper 40's and the trans temp needed if it moved at all would have been a needle width off of 100. So, either it isnt working or it's too cold out or my new 6.0 cooler is working really good.
My buddies truck just got a JW trans and we put in a 6.0 cooler as well. before the cooler and trans went in, he would see up around 150... after, it takes some pretty aggressive driving in his 140hp setting on the dp tuner to get it to see 140. We took it on about a 60 mile trip to the jobsite the other day, freeway speeds and he only hit 120 by the time we got there.
I would take it out on a nice long drive and see what happens, also, I 2nd the teflon tape check... I know the autometer gauges are mostly single wire and need the unit to ground itself. Good luck!
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Laughing Gas
Joined: Aug 2003
Posts: 836
Likes: 9
I may have to try the boiling water if it still does not seem to move after driving it for a few days. Two wire sensor so it should be grounded. I did use teflon tape as it said it was OK in the instructions.
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Laughing Gas
Joined: Aug 2003
Posts: 836
Likes: 9
Ok, I did the hot water test. Pulled the sensor set the end of the probe into the hot water. By the time I got into the cab to turn on the key the trans temp gauge was at 190F. I pulled the sensor probe out of the water and watched the trans temp gauge slowly drop down to 120F before I turned it off. Great Idea! Wish I had done it before I probed the trans temp gauge wires to check for continuity....
Go Bills !
Joined: Jan 2008
Posts: 2,778
Likes: 65
From: Buffalo, NY
Cool beans. That is one way to check it. lol.. Did you make sketti's when you were done with the test ? That was how i checked mine for accuracy,I did it at work and with a 12v power supply. A heat gun works good too but the question of acuracy would still remain because you would not know how hot the heat gun is blowing. Hot water can me measured to compare two gauges. With your water boiling, you gauged it at 190 by the truck gauge, temp drop time it took to set the pan under there. I would venture to guess you gauge is fairly close in the readings it is displaying.
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