Optimal Tranny temp?
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Optimal Tranny temp?
Hello guys.
I was wondering what the optimal transmision temp is. I was on the freeway for about a 30min drive and my transmission climbed to 210, on other cases i have seen it higher. That seems high to me! What is a good temp range, and in my case what should i check. I changed the filter and fluid about 2 months ago.
I was wondering what the optimal transmision temp is. I was on the freeway for about a 30min drive and my transmission climbed to 210, on other cases i have seen it higher. That seems high to me! What is a good temp range, and in my case what should i check. I changed the filter and fluid about 2 months ago.
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From: Missouri
ANything over 200 is getting pretty hot and you may be risking burning up your ATF. I believe optimal range is about 160 (please correct me if I'm wrong). As for what you should check I am not sure but you could install a bigger tranny fluid cooler. That would help a lot.
Flinno
Flinno
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From: Woodburn, OR
Tazzman,
What is the outside temperature and are you towing?
Have you added a large transmission cooler?
With an outside temperature of 90F my 95 F350 2 WD SC runs about 160 solo and 190 towing. I am towing a 12k fifth wheel.
What is the outside temperature and are you towing?
Have you added a large transmission cooler?
With an outside temperature of 90F my 95 F350 2 WD SC runs about 160 solo and 190 towing. I am towing a 12k fifth wheel.
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From: Braham MN
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Brett Foote
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From: N. Georgia
That's pretty high for no-tow. Before you add the new cooler, check your flow to make sure it's enough. If your flow is O K, then you can add the cooler. That way if they are still high you can check the flow again after the install and you will know the new cooler install (kinked lines?) is what is keeping them high.
Joe
Joe
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From: Braham MN
Thanks.
Ya thats a lil high. my '97 will do 190* after prolly a half hour-45min on freeway. will almost always be at 190* in town.I have just come to the conclusion that the stock cooler SUCKS that bad. my '96 will barley get to 160* with the big aftermarket cooler on it. so I think it just such a crappy cooler.
Diesel Rod
Ya thats a lil high. my '97 will do 190* after prolly a half hour-45min on freeway. will almost always be at 190* in town.I have just come to the conclusion that the stock cooler SUCKS that bad. my '96 will barley get to 160* with the big aftermarket cooler on it. so I think it just such a crappy cooler.
Diesel Rod
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To check the cooler flow, warm up the trans. Then with the engine off remove the cooler line from the rear of the trans. Put a 1/2" OD rubber line over the end of the cooler line so that you can get it out from under the truck.
Point the line into a container. Start the engine. A couple of seconds after the flow starts move the line to a second container. Keep it in the second container for exactly 15 seconds, then back to the first container, then shut the engine off.
You should have at least one quart in the second container. If not, there is a problem.
Refill the trans before driving!
Point the line into a container. Start the engine. A couple of seconds after the flow starts move the line to a second container. Keep it in the second container for exactly 15 seconds, then back to the first container, then shut the engine off.
You should have at least one quart in the second container. If not, there is a problem.
Refill the trans before driving!
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Thanks Casey, I was wondering how to go about this. I'll give it a try.
I did check the lines for kinks and obvious problems to day and there dosent seem to be any. The fluid is still a good color of red as well.
I did check the lines for kinks and obvious problems to day and there dosent seem to be any. The fluid is still a good color of red as well.
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Okcasey i did the test you suggested and i have a little over 3/4 of a quart. I have checked the lines, no kinks or anything. i checked the little tranny cooler and it flowed well. the only thing i havent checked is were the lines go into the bottom of the radiator. Possibly my blockage is in there! Can I bypass that part or is there something important going on there?
thanks again!
thanks again!