E40D trans temp 200-210 - Is this normal?
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Laughing Gas
Joined: Mar 2014
Posts: 1,092
Likes: 33
E40D trans temp 200-210 - Is this normal?
Hello all--
I just did major service to my truck.
Trans in particular....
1. Added the 4WD trans pan with drain plug.
2. Replaced trans filter with 4WD filter.
3. Drained torque converter
4. Added Motorcraft trans fluid Merc V (as recommended by Ford)
5. Added trans temp gauge with sender in test port.
Trans temps running this evening 200-210 degrees F. Ambient temps at about 75 degrees F. Three people in truck, no trailer in tow and no hills. City driving. Drove for about 40 mins with varied speeds from 10 mph to 50mph.
I don't know what temps were before adding gauge.
These temps seem high, especially with 75 degrees ambient temps and no trailer towing and no hill climbing.
Truck has 59K original miles and was a one owner truck. Truck appeared to be well cared for by orig owner.
What can be causing these high temps?
I am concerned about towing anything in the hot summer temps here in So Cal. It wont be long before we should see ambient temps over 100 degrees daily.
Engine temp running at 200 degrees F.
Thanks
I just did major service to my truck.
Trans in particular....
1. Added the 4WD trans pan with drain plug.
2. Replaced trans filter with 4WD filter.
3. Drained torque converter
4. Added Motorcraft trans fluid Merc V (as recommended by Ford)
5. Added trans temp gauge with sender in test port.
Trans temps running this evening 200-210 degrees F. Ambient temps at about 75 degrees F. Three people in truck, no trailer in tow and no hills. City driving. Drove for about 40 mins with varied speeds from 10 mph to 50mph.
I don't know what temps were before adding gauge.
These temps seem high, especially with 75 degrees ambient temps and no trailer towing and no hill climbing.
Truck has 59K original miles and was a one owner truck. Truck appeared to be well cared for by orig owner.
What can be causing these high temps?
I am concerned about towing anything in the hot summer temps here in So Cal. It wont be long before we should see ambient temps over 100 degrees daily.
Engine temp running at 200 degrees F.
Thanks
Thread Starter
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Laughing Gas
Joined: Mar 2014
Posts: 1,092
Likes: 33
Thanks Mark. Since I do plan on towing a trailer (9000#) and on other occasions a boat (3500#-5000#), at what point, temp wise, should I consider an auxilary cooler?
I am concerned that these coolers will block radiator and increase coolant, or cause trans to run too cool?
I have an auxilary trans cooler, as show in this link, that I could install as needed. Is this an appropriate and effective type cooler for the E40D? Also, the rubber hose with clamps used for install are not comforting, as I am concerned they will leak. It would be nice if there was a way to use screw-on type fittings.
https://www.ford-trucks.com/forums/1...-for-e40d.html
Thanks and thoughts?
I am concerned that these coolers will block radiator and increase coolant, or cause trans to run too cool?
I have an auxilary trans cooler, as show in this link, that I could install as needed. Is this an appropriate and effective type cooler for the E40D? Also, the rubber hose with clamps used for install are not comforting, as I am concerned they will leak. It would be nice if there was a way to use screw-on type fittings.
https://www.ford-trucks.com/forums/1...-for-e40d.html
Thanks and thoughts?
Thread Starter
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Laughing Gas
Joined: Mar 2014
Posts: 1,092
Likes: 33
Mark, when you say inside the radiator are you referring to the line from the trans that runs to radiator, which is currently in use as the original factory oem cooler?
So, I would not bypass this oem cooler, but run the aux cooler in addition to the oem cooler? Mounted in from of radiator should be OK?
Also, since I live in a region (So Cal desert) that is HOT in summer (100+ degrees F) and cool in winter (30-50 degrees F), should the thermostat included with the aux cooler be used? It pictured in the link as the blue aluminum part that looks like a manifold. I believe it is used to insure fluid is warmed properly in very cold climates before running through cooler.
Thanks
So, I would not bypass this oem cooler, but run the aux cooler in addition to the oem cooler? Mounted in from of radiator should be OK?
Also, since I live in a region (So Cal desert) that is HOT in summer (100+ degrees F) and cool in winter (30-50 degrees F), should the thermostat included with the aux cooler be used? It pictured in the link as the blue aluminum part that looks like a manifold. I believe it is used to insure fluid is warmed properly in very cold climates before running through cooler.
Thanks
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,722
Likes: 2,648
From: SE Florida
So, I would not bypass this oem cooler, but run the aux cooler in addition to the oem cooler? Mounted in from of radiator should be OK?[/quote]
Correct. Keep the cooler that is inside the radiator and add an aux cooler out front.
I have never used a thermostat like that one. The theory is very good, but I have heard from others that the practice isn't as good as the theory. I have heard, but cannot confirm, that the thermostat is too restrictive and limits cooling when you need it most. With low temperatures like you see I don't think the thermostat is necessary. If it wasn't restrictive then I'd be all for it.
Thread Starter
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Laughing Gas
Joined: Mar 2014
Posts: 1,092
Likes: 33
Ambiewnt temps now at 103 degrees - Ttranny now at 230 degrees!
Well, the heat has finnaly arrived! Ambient temps running over 100 everyday.
Friday it was about 103F and tranny reached 230F after city driving of about 90 min. Speeds of 10-50mph. This was about 15 miles worth of driving with one stop of 30 mins, another of 15 mins, and a third of 10 minutes. Engine turned off at these three stops. When I got home 90 mins later, trans temp was at 230F. This seems very high, especially with nothing in tow and only my two sons as passengers.
Is 230F boiling trans fluid?
Is this temp damaging trans?
Is my temp sensor (installed at test port) reading too hot?
This means this trans has been run at these temps since it was new. There was never any gauges installed so original owner never knew of temps.
Perhaps I should get up on the freeway and run it for 45 mins or so and see what temps are like....thoughts? In this scenario, what should trans temps be with ambient temps at 100-103F?
Trans shifts are mostly soft, especially between 2-3.
Again, truck has 59K original miles
Thanks
Friday it was about 103F and tranny reached 230F after city driving of about 90 min. Speeds of 10-50mph. This was about 15 miles worth of driving with one stop of 30 mins, another of 15 mins, and a third of 10 minutes. Engine turned off at these three stops. When I got home 90 mins later, trans temp was at 230F. This seems very high, especially with nothing in tow and only my two sons as passengers.
Is 230F boiling trans fluid?
Is this temp damaging trans?
Is my temp sensor (installed at test port) reading too hot?
This means this trans has been run at these temps since it was new. There was never any gauges installed so original owner never knew of temps.
Perhaps I should get up on the freeway and run it for 45 mins or so and see what temps are like....thoughts? In this scenario, what should trans temps be with ambient temps at 100-103F?
Trans shifts are mostly soft, especially between 2-3.
Again, truck has 59K original miles
Thanks
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Cargo Master
Joined: Jun 2003
Posts: 2,982
Likes: 7
From: Somewhere Saskatchewan
Yes.
I have never used a thermostat like that one. The theory is very good, but I have heard from others that the practice isn't as good as the theory. I have heard, but cannot confirm, that the thermostat is too restrictive and limits cooling when you need it most. With low temperatures like you see I don't think the thermostat is necessary. If it wasn't restrictive then I'd be all for it.
I have never used a thermostat like that one. The theory is very good, but I have heard from others that the practice isn't as good as the theory. I have heard, but cannot confirm, that the thermostat is too restrictive and limits cooling when you need it most. With low temperatures like you see I don't think the thermostat is necessary. If it wasn't restrictive then I'd be all for it.
It is referred to as an "H" clip. Fluid will take the path of least resistance.
In cold weather, much colder than 30-50 degrees, fluid in external coolers will gel at highway speeds which creates a Chernobyl affect.
In Canada temperatures can and do reach -45C, add highway wind speed and transmissions don't last long.
The "H" clip allows fluid to circulate through the radiator cooler only. Providing lubrication to the transmission.
I would not be concerned about using the device if your winter temperatures did not drop more than you mentioned. Even a piece of cardboard placed in front of the external cooler will suffice.
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Fleet Owner
Joined: Jul 2006
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From: Mi'kma'ki
install the aux cooler (after the radiator) and she'll run cooler for ya brother.what ya waiting for? 230 isn't boiling no.
wont hurt it but you wont be able to tow or work the truck without that tru-cool installed.get cracking.
i have that t-stat/bypass installed in both my trucks and iv never had any cooling issues.99% of the time,my trans temps remain 180-190.i think iv seen 200F a few times.probably was when plowing or towing the dump trailer through town or something.
however,i agree with Mark.for your location you probably don't need it but then again it does aid in quicker warm ups so it is good for efficiency anyway.getting perfect 170-180 trans temps at all times would be ideal,so why not do all you can to get it there quicker? im experiencing no drawbacks in doing so.
if you could have perfect,your trans temp would be 170-180F when you get in and out of your truck and stay there while you do whatever you do with it in between.
wont hurt it but you wont be able to tow or work the truck without that tru-cool installed.get cracking.i have that t-stat/bypass installed in both my trucks and iv never had any cooling issues.99% of the time,my trans temps remain 180-190.i think iv seen 200F a few times.probably was when plowing or towing the dump trailer through town or something.
however,i agree with Mark.for your location you probably don't need it but then again it does aid in quicker warm ups so it is good for efficiency anyway.getting perfect 170-180 trans temps at all times would be ideal,so why not do all you can to get it there quicker? im experiencing no drawbacks in doing so.
if you could have perfect,your trans temp would be 170-180F when you get in and out of your truck and stay there while you do whatever you do with it in between.
Cargo Master
Joined: Jun 2003
Posts: 2,982
Likes: 7
From: Somewhere Saskatchewan
Turning the engine off does not cool the transmission.
Well it will cool if left for several hours.
With no circulation fluid remains in the transmission soaking up heat from the case and internal components.
Well it will cool if left for several hours.
With no circulation fluid remains in the transmission soaking up heat from the case and internal components.
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