extra cooling
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Posting Guru
Joined: Apr 2005
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From: covington wa.
extra cooling
Is it posible to run or hook up your trans lines to the air
conditioner radiator (whatever its called condensor?)any
how to get more cooling for the trans. Note the aircon
does not work and am going to take the system out if
it wont work for the transmission??
conditioner radiator (whatever its called condensor?)any
how to get more cooling for the trans. Note the aircon
does not work and am going to take the system out if
it wont work for the transmission??
Posting Guru
Joined: Nov 2004
Posts: 1,137
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From: Asheville, NC
I wouldn't do it. It will overcool the fluid in the tranny. Overcool will actually shorten the life of the thing.
My truck has the radiator tank cooler, and a factory cooler on the front of the condenser. Fluid hits the front cooler first, then the radiator. Big difference between the fluid temp coming out of the tranny and what goes back in.
Whats wrong with the A/C? I'd fix it if possible. It's HOT!
My truck has the radiator tank cooler, and a factory cooler on the front of the condenser. Fluid hits the front cooler first, then the radiator. Big difference between the fluid temp coming out of the tranny and what goes back in.
Whats wrong with the A/C? I'd fix it if possible. It's HOT!
Mountain Pass
Joined: Jan 2005
Posts: 124
Likes: 2
Overcool? Never heard of that. I just installed a B&M super cooler with a fan on it. I did this because my stock ford aux cooler was leaking and I pull a large trailer, I also do some snow plowing. However like most pickup trucks it does a lot of driving around empty. Any real risk of over cooling?
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Posting Guru
Joined: Apr 2005
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From: covington wa.
Up here in washington it does'nt get hot enough for to long to have all that power robbing gas mileage reducing stuff on it.
Besides i acually dont know if charging the system will make it
work.
Besides i acually dont know if charging the system will make it
work.
Postmaster
Joined: Mar 2001
Posts: 4,968
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From: So Cal
You can over cool a tranny, but the results are not as bad as overheating. Typcially a tranny running cold will shift at higher RPMs which wastes a little gas and does cause a bit more wear. Overcooling is probably only a problem if you live where it snows.
The computer controlled trannys have sensors to change the shift pattern based upon the fluid temps. You would think the manufacturers have a good reason to put in these expensive additional parts. This should lead you to see that over cooling is also an issue to the manufacturer, just not as Right Now as overheating.
Just my opinion and the opinion of the tranny shops who take my money for my stupid mistakes.
Jim Henderson
The computer controlled trannys have sensors to change the shift pattern based upon the fluid temps. You would think the manufacturers have a good reason to put in these expensive additional parts. This should lead you to see that over cooling is also an issue to the manufacturer, just not as Right Now as overheating.
Just my opinion and the opinion of the tranny shops who take my money for my stupid mistakes.
Jim Henderson
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Posting Guru
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From: covington wa.
I should mention that i have a 89' f250 460cid c-6 tranny just
in case that would make a differance on anyones answers. I
personnally have always thought and heard the cooler you can
run your tranny the better. So really a regular tranny cooler would
be fine, but the shear size of a aircon condensor would be over
doing it?
in case that would make a differance on anyones answers. I
personnally have always thought and heard the cooler you can
run your tranny the better. So really a regular tranny cooler would
be fine, but the shear size of a aircon condensor would be over
doing it?
Cargo Master
Joined: Aug 2004
Posts: 2,899
Likes: 2
From: Lynnwood, WA
There are thermostats for ATF -- that would probably take care of any possible over cooling. While over cooling is not good, erring on the cooler side is better than erring on the hotter side. You should put in a gauge to see what your temps are.
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Mountain Pass
Joined: Jan 2005
Posts: 124
Likes: 2
I put a trans trmp sensor in the pan of mine, havent finished mounting the guage yet, but how cool is too cool? Also how hot is too hot?
My brother in law has a 78 Dodge Sno-Commander and his tranny cooler appears to be a A/C condensor and it's still running. This truck never had A/C on it and he has not owned it it's entire life so we are not sure if this was done by dodge or by somebody later, but snow plow trucks need to keep the trans cool with all that back and forth and little air through the grill, and the Sno Commander is a factory plow truck.
My brother in law has a 78 Dodge Sno-Commander and his tranny cooler appears to be a A/C condensor and it's still running. This truck never had A/C on it and he has not owned it it's entire life so we are not sure if this was done by dodge or by somebody later, but snow plow trucks need to keep the trans cool with all that back and forth and little air through the grill, and the Sno Commander is a factory plow truck.
Postmaster
Joined: Mar 2001
Posts: 4,968
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From: So Cal
I assume my 94 E4OD is normal.
With no towing...The temps run between 110 to maybe 150 during Oregon winters with temps in the 30 to high 40s range. It takes maybe an hour of freeway driving to get it up to the 150 area. During 90 degree days the temps run maybe 150 to 180 in normal driving.
With an 8,000# trailer I see temps of 130 to maybe 180 in winter and 180 to maybe 210 in 100 degree 70mph tows with good long hills thrown in.
I have the factory aux cooler(I assume it is part of a towing package) I have 4.10 gears, 4x4 Supercab long bed with 460. I have a Perma cool aux filter setup with the temp sensor in the filter mount with atf coming from the cool side of the main lines, If I recall correctly.
The interesting thing I have seen is that this transmission really seems to heat soak. I. E. it takes a long time to get up to temperature and it may take a long time to get rid of the heat when you slow down.
Just my experience,
Jim Henderson
With no towing...The temps run between 110 to maybe 150 during Oregon winters with temps in the 30 to high 40s range. It takes maybe an hour of freeway driving to get it up to the 150 area. During 90 degree days the temps run maybe 150 to 180 in normal driving.
With an 8,000# trailer I see temps of 130 to maybe 180 in winter and 180 to maybe 210 in 100 degree 70mph tows with good long hills thrown in.
I have the factory aux cooler(I assume it is part of a towing package) I have 4.10 gears, 4x4 Supercab long bed with 460. I have a Perma cool aux filter setup with the temp sensor in the filter mount with atf coming from the cool side of the main lines, If I recall correctly.
The interesting thing I have seen is that this transmission really seems to heat soak. I. E. it takes a long time to get up to temperature and it may take a long time to get rid of the heat when you slow down.
Just my experience,
Jim Henderson
Cargo Master
Joined: Aug 2004
Posts: 2,899
Likes: 2
From: Lynnwood, WA
A normal operating temperature is about 170 - 180F, and it's OK up to around 190 - 200, but around 230 - 240 or so you really need to start to worry about the longevity of your tranny. Synthetic ATF might handle hot temps a little better.