Transmission Question
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Freshman User
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Transmission Question
Hello
I have a 1996 Ford F250 Supercab with a 5.8L engine and a E4OD transmission. I use this truck to plow. This past storm caused the trans to over heat a couple times and the trans pump seal to leak each time it got hot. We shut the truck down each time and let it cool for a couple hours before going again. We filled the truck back up with trans fluid and the last time I put in a trans stop leak stuff to try to make sure we got through the storm which we did. It ran perfectly fine and never slipped or anything like that. I know I need to at minimum flush and change the fluid in the transmission. I have two questions, 1) is it possible to just flush and change fluid at this point and not have to rebuild the trans, maybe put in a new seal? 2) I have access to another transmission it is a Jasper but I don't believe it is a E4OD is there any problems I will face with replacing a truck outfitted with an E4OD with another transmission that might be just a C6 3 speed or AOD?
Thanks in advance.
I have a 1996 Ford F250 Supercab with a 5.8L engine and a E4OD transmission. I use this truck to plow. This past storm caused the trans to over heat a couple times and the trans pump seal to leak each time it got hot. We shut the truck down each time and let it cool for a couple hours before going again. We filled the truck back up with trans fluid and the last time I put in a trans stop leak stuff to try to make sure we got through the storm which we did. It ran perfectly fine and never slipped or anything like that. I know I need to at minimum flush and change the fluid in the transmission. I have two questions, 1) is it possible to just flush and change fluid at this point and not have to rebuild the trans, maybe put in a new seal? 2) I have access to another transmission it is a Jasper but I don't believe it is a E4OD is there any problems I will face with replacing a truck outfitted with an E4OD with another transmission that might be just a C6 3 speed or AOD?
Thanks in advance.
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
Don't go there unless you have no choice it can easily turn into a giant nightmare. Change the fluid and make sure you blow out all the trans lines and especially the rad, and then install an aux oil cooler.
Super Moderator
Joined: Apr 2004
Posts: 34,517
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You may need to care and feed your E4OD, but it is a big beefy trans.
Issues with your suggested changes:
The C6 and AOD are mechanical transmissions, not electronic like your E4OD. Thus, your computer is going to miss talking to the trans, and you will have at the minimum a CEL, and possibly more, such as a limp mode or worse.
The AOD is a lighter trans, and will snap like a twig in your use anyway.
The C6 will overheat and burn up for you as well, so I would do as directed above and you should be ok with the E4OD.
Issues with your suggested changes:
The C6 and AOD are mechanical transmissions, not electronic like your E4OD. Thus, your computer is going to miss talking to the trans, and you will have at the minimum a CEL, and possibly more, such as a limp mode or worse.
The AOD is a lighter trans, and will snap like a twig in your use anyway.
The C6 will overheat and burn up for you as well, so I would do as directed above and you should be ok with the E4OD.
Fleet Owner
Joined: Jul 2006
Posts: 20,381
Likes: 845
From: Mi'kma'ki
you should have a trans temp gauge and aux cooler.
you'll probably be just fine if it's no longer leaking and can get away without replacing the seal and changing out the fluid that got too hot.the seal would have shrunk back down and resealed without the seal leak,most likely.
when plowing,watch the trans temp gauge.when over 200-225 the absolute quickest way to cool the trans down would be to stop plowing,and drive down the road while keeping a light load (flat ground or downhill) in OD.if the roads are too bad,then just try and get it up into 3rd plus that semi shift (converter locking) before OD.once she enters lock up,she pumps incredibly large volumes of fluid through the system and trans temps will fall off within just a few minutes.then you can drive back the mile or two to resume plowing issue free via watching the gauge with the temp sensor @ the test port.
with a large enough aux cooler you wouldn't have to keep doing that unless your plowing for long durations at once,but even then the large aux cooler would give you more time between "converter lockup runs" if you will.
ideal trans fluid temps would be 170-180F at the pan/test port.
you'll probably be just fine if it's no longer leaking and can get away without replacing the seal and changing out the fluid that got too hot.the seal would have shrunk back down and resealed without the seal leak,most likely.
when plowing,watch the trans temp gauge.when over 200-225 the absolute quickest way to cool the trans down would be to stop plowing,and drive down the road while keeping a light load (flat ground or downhill) in OD.if the roads are too bad,then just try and get it up into 3rd plus that semi shift (converter locking) before OD.once she enters lock up,she pumps incredibly large volumes of fluid through the system and trans temps will fall off within just a few minutes.then you can drive back the mile or two to resume plowing issue free via watching the gauge with the temp sensor @ the test port.
with a large enough aux cooler you wouldn't have to keep doing that unless your plowing for long durations at once,but even then the large aux cooler would give you more time between "converter lockup runs" if you will.
ideal trans fluid temps would be 170-180F at the pan/test port.
Logistics Pro
Joined: Jul 2009
Posts: 3,635
Likes: 3
From: Lansdale, PA
If you're having issues overheating, you should plow in low range. Means you are underpowered and always straining to push. Builds a lot of heat. Low range slows you down in reverse, but will help with pushing and to keep heat down.
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