trans temp install problems/questions
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Elder User
Joined: Dec 2003
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From: Wayne, PA
trans temp install problems/questions
I just installed my new DP-tunes 
and I also wanted to install a trans temp in the overhead pod. I already had boost and exhaust on the a pillar. Anyway, I can not do a mechanical gauge because the lead is not long enough. Now I have the electric trans temp installed and it is running very hot. I dont trust the gauge. 10 minutes of easy driving and I am pushing 250 degrees. What did I do wrong. Any thoughts??
and I also wanted to install a trans temp in the overhead pod. I already had boost and exhaust on the a pillar. Anyway, I can not do a mechanical gauge because the lead is not long enough. Now I have the electric trans temp installed and it is running very hot. I dont trust the gauge. 10 minutes of easy driving and I am pushing 250 degrees. What did I do wrong. Any thoughts??
Elder User
Joined: Apr 2005
Posts: 533
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From: Simpsonville, SC
Where do you have the sensor installed? Mine is in the test port on the side of the tranny, certainly don't see 250deg at all - I vote for bad sensor. You could unscrew the sensor and dip it in some liquid of a known temp (maybe heat up some water with a kitchen thermometer) to test it....
New User
Joined: Sep 2007
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I had a similar problem after installing my Dripricol tranny temp gauge. It turned out to be my battery. I replaced both batteries and the problem went away. My batteries were pushing 5 years old. I have heard of strange problems with people's vehicles caused by a bad battery.
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Joined: Jun 2006
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From: Fulltime RVer
I've read that it's not unusual for the check valve in the tranny bypass line to get weak and open prematurely so that little if any of the tranny fluid gets circulated through the cooler! Your rapid warm up to 250 F sounds like that might be your problem, or possibly a clogged cooler?
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Posting Guru
Joined: Jul 2004
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From: Buckingham, IA
Ditto on the clogged cooler. My son found that problem when he had his transmission flushed. Totally plugged. That was a year ago. He just had his transmission rebuilt last month but it had over 200K on it.
This may take a little time to diagnose. You will have to do each suggested remedy to see if that is the problem. Hope you find it soon.
This may take a little time to diagnose. You will have to do each suggested remedy to see if that is the problem. Hope you find it soon.
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From: milwaukee,WI
I've read that it's not unusual for the check valve in the tranny bypass line to get weak and open prematurely so that little if any of the tranny fluid gets circulated through the cooler! Your rapid warm up to 250 F sounds like that might be your problem, or possibly a clogged cooler?
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Elder User
Joined: Dec 2003
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From: Wayne, PA
I know this isn't scientific but I said what the hell. I drove 6 miles round trip taking it easy to top off with diesel. I got home and crawled under the truck and my M/H pan was hot to the touch. I could hold on for 5 seconds or so. I also noticed the front drive shaft was hot. The front diff and the transfer cases where cool. Could the trans be putting off so much heat that it would make the front drive shaft hot?
Posting Guru
Joined: Jul 2004
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From: Buckingham, IA
Sounds like you need to take it to a good tranny shop for a diagnosis. May have to check the flow to the cooler.
The front drive shaft could get heat from the exhaust pipe if that is where it was hot. If the transfer case and front diff were cool, then the heat to the drive shaft would have to be radiated to it from some source not directly connected to it.
How long was the warranty on the transmission? Did they put in a new torque converter and flush the cooler when they put in the new tranny? If they used the old torque converter, the clutches in it could have been coming apart and have since plugged the cooler and who knows what else. Might need to pull the pan and see what you find.
The front drive shaft could get heat from the exhaust pipe if that is where it was hot. If the transfer case and front diff were cool, then the heat to the drive shaft would have to be radiated to it from some source not directly connected to it.
How long was the warranty on the transmission? Did they put in a new torque converter and flush the cooler when they put in the new tranny? If they used the old torque converter, the clutches in it could have been coming apart and have since plugged the cooler and who knows what else. Might need to pull the pan and see what you find.
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