Whats Normal ??????
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Senior User
Joined: Nov 2004
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From: Long Island
Whats Normal ??????
Finally got my transmission sensor setup and connected...Running appx 150 degrees without anything in tow on open road...maybe alittle bit warmer around town in stop and go...No actual towing temp yet..Guess it depends on gears and Im unsure which it is...maybe 4.1...Hope this is a normal temp...No problems as of now anyway
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Joined: Jul 2006
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I'm having issues with my 2000 7.3. A new tranny at 40K, and that one failed at 65K but was "repaired" under waranty. I two a 5000 trailer a few times a year, and drive logging roads in the mountains. Apparently, that's too much for this tranny.
Postmaster
Joined: Mar 2001
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From: So Cal
Normal for no load is around 150-180. A lot depends on outside air temps and how long you have been driving etc.
My 94 F250 4x4 4.10 E4OD would run normally around 180 on a warm summer day, no tow, after a long drive, ie an hour or two. On a near freezing day it may take an hour or two before the temp gets much past 110 or 130. During a tow, the temp comes up quicker and might be 10 degrees or so higher.
Most of the charts recommend something like 180 to 220(?) as normal and for every 10 degrees above 220, you loose half the fluid life. Don't trust me on this, my memory is foggy, but a web search will tuen up lots of those tranny temp charts.
It takes a long time usually for the tranny temp to stabilize since there is so much metal to heat up. Conversely, it takes a long time to cool down too, so if you have been doing a heavy tow for a long time in hot conditions, you probably should let the engine idle a few minutes during a stop for gas etc. Otherwise, you might cause the tranny to vent some of the fluid if you shut off right away and all that heat in the metal dumps into the fluid which is no longer being cooled.
Good Luck,
Jim Henderson
My 94 F250 4x4 4.10 E4OD would run normally around 180 on a warm summer day, no tow, after a long drive, ie an hour or two. On a near freezing day it may take an hour or two before the temp gets much past 110 or 130. During a tow, the temp comes up quicker and might be 10 degrees or so higher.
Most of the charts recommend something like 180 to 220(?) as normal and for every 10 degrees above 220, you loose half the fluid life. Don't trust me on this, my memory is foggy, but a web search will tuen up lots of those tranny temp charts.
It takes a long time usually for the tranny temp to stabilize since there is so much metal to heat up. Conversely, it takes a long time to cool down too, so if you have been doing a heavy tow for a long time in hot conditions, you probably should let the engine idle a few minutes during a stop for gas etc. Otherwise, you might cause the tranny to vent some of the fluid if you shut off right away and all that heat in the metal dumps into the fluid which is no longer being cooled.
Good Luck,
Jim Henderson
