Transmission overheating
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New User
Joined: Sep 2004
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Transmission overheating
Hello all
I was driving back from Northern CA to Southern CA (approx 600 miles) was averaging around 80 MPH on flat freeway (interstate 5) when I started up the Grapevine (long incline) when I started to smell something smoking. I immediatly pulled over and found transmission fluid dripping off the block thus creating the smoke and smell. I had the truck towed to a local gargage in Frazier Park thinking I blew a seal, however, the seals where fine. The mechanic stated I had overheated the transmission and the fluid was coming from the over flow. I was not towing anything. I have a 5.8 w/E4OD transmission. I had just replaced the tranny fluid before I left on the trip. I replaced 1 qt of tranny fluid, let the tranny cool off and completed my trip home without incident. The truck is running fine now but I have not taken it on anyother long trips. Sorry about the long post but I was wondering if anyone else had experienced this problem, and if so, how can I prevent it from happening in the future? I do not tow anything with my Bronco, so I didn't think I needed a tranny cooler. Thank you in advace for any help.
I was driving back from Northern CA to Southern CA (approx 600 miles) was averaging around 80 MPH on flat freeway (interstate 5) when I started up the Grapevine (long incline) when I started to smell something smoking. I immediatly pulled over and found transmission fluid dripping off the block thus creating the smoke and smell. I had the truck towed to a local gargage in Frazier Park thinking I blew a seal, however, the seals where fine. The mechanic stated I had overheated the transmission and the fluid was coming from the over flow. I was not towing anything. I have a 5.8 w/E4OD transmission. I had just replaced the tranny fluid before I left on the trip. I replaced 1 qt of tranny fluid, let the tranny cool off and completed my trip home without incident. The truck is running fine now but I have not taken it on anyother long trips. Sorry about the long post but I was wondering if anyone else had experienced this problem, and if so, how can I prevent it from happening in the future? I do not tow anything with my Bronco, so I didn't think I needed a tranny cooler. Thank you in advace for any help.
Senior User
Joined: Jun 2003
Posts: 159
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From: CA
Yeah the grapevine is a killer...several trips out to AZ over the Cajone hosed my AOD. I've got a larger cooler and a temp guage on my tranny now. I would suggest both for insurance. And I haven't had any problems yet. You can check out my cooler upgrade in my gallery.
Last edited by body9599; Nov 3, 2004 at 11:23 PM.
More Turbo
Joined: Aug 2004
Posts: 689
Likes: 6
From: Rodeo, Ca.
Originally Posted by body9599
Yeah the grapevine is a killer...several trips out to AZ over the Cajone hosed my AOD. I've got a larger cooler and a temp guage on my tranny now. I would suggest both for insurance. And I haven't had any problems yet. You can check out my cooler upgrade in my gallery.
Cargo Master
Joined: Apr 2001
Posts: 2,466
Likes: 4
From: northern kentucky
some of us with Linc. Mark viii have to upgrade the tranny cooler in our cars since we race them. A few of us have installed the biggest TC we can find and then mount fans on it. you know for the added protection.
More Turbo
Joined: Aug 2004
Posts: 689
Likes: 6
From: Rodeo, Ca.
Originally Posted by kameronth
How do you install a tranny temp guage? What is the normal temp. for an automatic?
Thread Starter
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New User
Joined: Sep 2004
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Transmission overheating
Hey Erik
From the pics I'm assuming you have to remove the grill
to install the cooler, correct? Any other hints for installation would be appreciated.
thanks
From the pics I'm assuming you have to remove the grill
to install the cooler, correct? Any other hints for installation would be appreciated.
thanks
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Senior User
Joined: Jul 2003
Posts: 128
Likes: 0
From: San Antonio TX
Just FYI, I had heard about the E40D overheat prblem from other owners before I bought my bronce and install and additional trans cooler along side the first and a temp guage and have never overheated it regardless of how much much or crud was stuck to it. But when it did breakdown I think that was due to the previous owners abuse and just cuaght up with me. Although a buddy who did the same setup, and has owned his bronco since day one hasn't evr had an problems with heat, and when he takes it in to get serviced the mechanics always mention how clean the fluid looks. Just thought you might like to know.
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Senior User
Joined: Jun 2003
Posts: 159
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From: CA
Originally Posted by surfmore2
Hey Erik
From the pics I'm assuming you have to remove the grill
to install the cooler, correct? Any other hints for installation would be appreciated.
thanks
From the pics I'm assuming you have to remove the grill
to install the cooler, correct? Any other hints for installation would be appreciated.
thanks
New User
Joined: Jan 2004
Posts: 11
Likes: 0
From: Jim Thorpe
Had a Jasper rebuilt transmission (E40D) installed in my 91 Bronco. They warrant it for 3 years or 75,000 miles but you must install their transmission cooler. They claim the Ford cooler isn't sufficient.
