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TRANNY OVER HEATING!

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Old Jun 4, 2012 | 08:22 AM
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TRANNY OVER HEATING!

I have a new to me 2000 v10 f250. Ive had it about a year now and havent put very many miles on it. I have a tranny temp gauge that i installed and yesterday after about 30 miles pulling my very light camper the tranny temp was at 225 and climbing. Not sure whats causing this. The fluid looks great and the PO said he used to flush it every other year. Im wondering a few things here since i have a trip coming up is that i put on a crome grill piece if thats restricting to much air or Ive read about those bypass valves going bad any help would be great!
 
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Old Jun 4, 2012 | 06:01 PM
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Where do you have the sender? Is it in the test port, the pan, or the cooler line?
 
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Old Jun 4, 2012 | 09:03 PM
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I Have it in the test port. 2 guys have said that temp is bad and the dealership said no problem but never ask where the sending unit was. thanks for the response because im very clueless when it comes to trannys. Any other info needed?
 
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Old Jun 4, 2012 | 10:37 PM
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I was told that the transmission temperature was supposed to be at 240???
 
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Old Jun 5, 2012 | 06:36 AM
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A temp of 225-240 measured at the test port is NOT out of the normal range.
 
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Old Jun 5, 2012 | 08:06 AM
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Thats great news but what is the getting hot range then? Thanks again for the help I can breath alittle easier now!
 
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Old Jun 5, 2012 | 09:01 AM
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To me that sounds a little high but
1 Is your gauge accurate
2 Does your clutch fan come on when it's that hot
3 Is your A/C condenser and transmission cooler clean
4 Have you tried it without your new grill cover

I have a gauge mounted in the same spot but I also have a factory deep pan that comes with the F350 11,000 gvw package and a 6" tall cooler that runs the full length in front of the A/C condenser and I normally run between 180' to 220' pulling, 220 is pulling hard on hills.

Denny
 
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Old Jun 5, 2012 | 09:08 AM
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not sure if the gauge is correct or not, do i test this with a temp gun? Do i just shoot it where the sender is located? No I havnt tried it without the grill but will be doing some testing on it for sure.
 
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Old Jun 5, 2012 | 09:10 AM
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By the way the engine temp doesnt even come close to getting hot thats where im stumped and thinking bad gauge or its normal operating temp
 
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Old Jun 5, 2012 | 11:14 AM
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Originally Posted by BEER TIME
Thats great news but what is the getting hot range then? Thanks again for the help I can breath alittle easier now!
The test port is a good place to measure the temperature.

The maximum continuous temperature is 220°F. You can go to 250°F for up to a half hour at a time without problems. Running 240°F all the time is going to cause problems with your transmission.
 
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Old Jun 5, 2012 | 12:15 PM
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Originally Posted by BEER TIME
not sure if the gauge is correct or not, do i test this with a temp gun? Do i just shoot it where the sender is located? No I havnt tried it without the grill but will be doing some testing on it for sure.
I don't think the temp outside of the case would be the same as the temp of the fluid but it may be close to the pan temp if it's been at the same temp for long time without any air movement. One thing I have found with the transmission temp and that is when it gets hot it takes a long time for the gauge to come back down after the heavy load is removed. So if you pull a long hill or pull in heavy traffic it will takes a long time for the temp to come back down.

Denny
 
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Old Jun 5, 2012 | 12:17 PM
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[QUOTE
The maximum continuous temperature is 220°F. You can go to 250°F for up to a half hour at a time without problems. Running 240°F all the time is going to cause problems with your transmission.[/QUOTE]

Thanks Mark that's good to know

Denny
 
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Old Jun 5, 2012 | 12:37 PM
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thanks Mark great advice. is there anything i can do to help keep it cool. like i said its a 5000lb camper and plan on a 3 hour trip so any advice on keeping it cool would help. O/D on or off ect.
 
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Old Jun 5, 2012 | 01:39 PM
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How's the fluid look? Dirty fluid can't flow as well and it could raise temps
 
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Old Jun 5, 2012 | 02:38 PM
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The fluid looks great. Would trying synthetic cool it down better? If so what kind. Again thanks for all the info
 
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