Transmission problems
Junior User
Joined: Sep 2003
Posts: 56
Likes: 0
From: Salt Lake City
Gosh! This seems to be a repeat problem for quite alot of us. Just a this past Aug. I took the family camping, towing a 22ft TT up a fairly easy grade doing about 35mph (that was the posted speed limit through the canyon). When I got to the camp spot and got out of the truck, my tranny fluid was just gushing out from between the engine and tranny. I have a trans temp gauge but it only ready about 200F the entire time. Anyhow, I ended up getting towed to the dealer (Henry Day Ford) here in SLC, UT. They took a week to get it fixed. They said it was a loose TC that caused the excessive heat. It was replaced under warranty. They also suggested I install the trans cooler from the 6.0 PSD for $600 bucks installed. I had them go ahead and do it. Now my trans temp only gets to about 130F on the freeway and the needle doesn't even move off of 100F driving in town.
This tranny has been the biggest pain in the the arzz and wallet. It makes me hesitant to buy another Ford, which I was thinking of getting a new truck (F350 crew cab 6.7L PSD). I think I willl hold out a while longer to see how the new truck performs before buying.
Best of luck to everyone...
This tranny has been the biggest pain in the the arzz and wallet. It makes me hesitant to buy another Ford, which I was thinking of getting a new truck (F350 crew cab 6.7L PSD). I think I willl hold out a while longer to see how the new truck performs before buying.
Best of luck to everyone...
Tuned
Joined: Aug 2003
Posts: 278
Likes: 0
Savage - Did the dealer tell you what "to hot" is and for the stock tranny and how long you could safely run at that temp? How long was your tranny at 200? I think some dino fluids start to break down at 220 and so you shouldn't run them for lomg at that temp. I drove at 80mph last night for about 20 minutes and the tranny temp was 200 the whole time I was at 80 (yes I know I need more tranny cooling). I wonder what "to hot" for a tranny now is. For reference, at 60mph my stock temp=170 (normal), at 70mph=180, at 75mph temp=190, at 80mph temp=200.
What kind of gauges do you have? I have the ISSPRO and have been wondering just how accurate they are. As soon as I can find a spare minute I think I may check the calibration of my tranny and pyro gauges
What kind of gauges do you have? I have the ISSPRO and have been wondering just how accurate they are. As soon as I can find a spare minute I think I may check the calibration of my tranny and pyro gauges
Junior User
Joined: Sep 2003
Posts: 56
Likes: 0
From: Salt Lake City
dcara,
Were you towing anything while doing 80mph? Wow, 200F at 80mph is quite hot if you are not towing anything. Before the addition of the tranny cooler, my X was around 170F at 75-80mph not towing.
The dealer didn't give me an exact temp but said it was best to stay below 200F. I think if you do a search on trans temp, you willl find alot of good info. I know I have ready alot of comments stating trans oil starting to break down around 220-230F. I think it was a good investment for me to have the upgraded trans cooler from the 6.0L PSD installed.
I have autometer gauges. Trans temp, boost, and EGT mounted on the before turbo.
Were you towing anything while doing 80mph? Wow, 200F at 80mph is quite hot if you are not towing anything. Before the addition of the tranny cooler, my X was around 170F at 75-80mph not towing.
The dealer didn't give me an exact temp but said it was best to stay below 200F. I think if you do a search on trans temp, you willl find alot of good info. I know I have ready alot of comments stating trans oil starting to break down around 220-230F. I think it was a good investment for me to have the upgraded trans cooler from the 6.0L PSD installed.
I have autometer gauges. Trans temp, boost, and EGT mounted on the before turbo.
Posting Guru
Joined: Aug 2007
Posts: 1,852
Likes: 1
From: Sonoita Hills, AZ
I have 140k, no problems yet . I change fluid every 25k. There are alot of Fords out there, and some of them will break. My friends Chevy ate 4 transmissions by the time he hit 120k. And it was only a half ton.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,695
Likes: 2,616
From: SE Florida
Originally Posted by seattleswimboy
Can the 5R110 torque shift tranny be hooked up to the 7.3L?
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Tuned
Joined: Aug 2003
Posts: 278
Likes: 0
Since my last post I have added a tranny cooler which helps when I'm hauling cattle or other road type heavy hauling. Last year I started using my truck to pull the plow disk (in 4x4 Low) when disking pastures. I can disk my pastures now 3 times faster in the comfort of AC or heat, suspension, sterio etc. The tranny cooler doesn't help as much at these low speeds so I have to watch my tranny temp gauage pretty close. After about 40 minutes of heavy disking the the temp can get to about 190 where it seems to stabilize. Not sure how long the stock torque converter could have took this but the heavy duty TC I had installed during my 07 rebuild seems to be holding up good. I do not recommend this actiuvity unless you have a tranny guage. I wasn't paying attention one time and it got to 220. I had the fluid change and checked to see if it was burnt. To my relief it wasn't.
Heard a clunk one time (spare tire holding cable broke) and checked the rear view mirror only to see the disk about to have my spare tire for lunch. Got stopped just as the disk had cleaned the mud off the tire.
Heard a clunk one time (spare tire holding cable broke) and checked the rear view mirror only to see the disk about to have my spare tire for lunch. Got stopped just as the disk had cleaned the mud off the tire.
Fleet Mechanic
Joined: Dec 2010
Posts: 1,546
Likes: 9
From: Wellington, Co
Since my last post I have added a tranny cooler which helps when I'm hauling cattle or other road type heavy hauling. Last year I started using my truck to pull the plow disk (in 4x4 Low) when disking pastures. I can disk my pastures now 3 times faster in the comfort of AC or heat, suspension, sterio etc. The tranny cooler doesn't help as much at these low speeds so I have to watch my tranny temp gauage pretty close. After about 40 minutes of heavy disking the the temp can get to about 190 where it seems to stabilize. Not sure how long the stock torque converter could have took this but the heavy duty TC I had installed during my 07 rebuild seems to be holding up good. I do not recommend this actiuvity unless you have a tranny guage. I wasn't paying attention one time and it got to 220. I had the fluid change and checked to see if it was burnt. To my relief it wasn't.
Heard a clunk one time (spare tire holding cable broke) and checked the rear view mirror only to see the disk about to have my spare tire for lunch. Got stopped just as the disk had cleaned the mud off the tire.
Heard a clunk one time (spare tire holding cable broke) and checked the rear view mirror only to see the disk about to have my spare tire for lunch. Got stopped just as the disk had cleaned the mud off the tire.
Sounds like you had a good rebuild in 07. A lot don't last for wahtever reasons.
Senior User
Joined: Sep 2009
Posts: 341
Likes: 0
I wanted to ask everybody on here if they've ever had tranny problems with their 7.3l PSD's?
If so what was the problem?
Is your truck 2wd or 4wd?
Did you tow heavy trailers?
Did you use OD when towing?
Did you service the tranny regularly?
How much did it cost to fix?
How many miles were on it?
And of course if you've never had a tranny problem I wanna know about that too.
Thanx, Dewey
If so what was the problem?
Is your truck 2wd or 4wd?
Did you tow heavy trailers?
Did you use OD when towing?
Did you service the tranny regularly?
How much did it cost to fix?
How many miles were on it?
And of course if you've never had a tranny problem I wanna know about that too.
Thanx, Dewey
I have both an E99 and a L99 both with the 4R100 transmission and 4x4. With regular servicing and oil sampling by Blackstone I have yet had a transmission failure. The L99 is pushing 200,000 miles and the E99 is at 268,000 miles. I do pull a gooseneck horse trailer and haul a cabover camper.
I do not use OD when towing in hills but on the open flat highway I use OD.
Servicing and routine sampling for wear is the key to longevity.
Jeff
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