. Who says that my memory is shot?
ANOTHER tranny temp question...
Thread Starter
|
Postmaster
Joined: Jul 2006
Posts: 3,754
Likes: 1
From: Indianapolis
ANOTHER tranny temp question...
OK- on thew way to work in the morning, ambient temp about 65*, I only stop a few times due to light traffic. In my 1 hr drive I get the tranny up to about 120*
On the way home, ambient temp hits about 80*, and many stops due to heavier traffic and one tall hill. I also get into it more "kinda racing" the yuppies. By the time I get home, I'm anywhere between 180* and as high as 220*. BTW the brakes also get pretty hot....
Is this normal, and if so is it bad to get that high?? I'm wondering if when I got my tranny rebuilt almost 20k miles ago, they might have did something wrong?
On the way home, ambient temp hits about 80*, and many stops due to heavier traffic and one tall hill. I also get into it more "kinda racing" the yuppies. By the time I get home, I'm anywhere between 180* and as high as 220*. BTW the brakes also get pretty hot....
Is this normal, and if so is it bad to get that high?? I'm wondering if when I got my tranny rebuilt almost 20k miles ago, they might have did something wrong?
Logistics Pro
Joined: Jun 2005
Posts: 4,243
Likes: 16
From: AZ
The 220 number is getting up in the "too hot" range. Somewhere I use to have a graph which showed the expected longevity of tranny fluid as a function of temperature...I drive in much hotter ambient temperatures and never see those kind of fluid temps...coming through Las Vegas at 109 degrees, with a load on my truck (over a ton of mesquite on board), I never saw 200 degrees in the tranny. I seem to remember, as a rule of thumb, every 20 degree increase in operating temperature above 175 degrees F. cuts the life of the fluid in half.
Senior User
Joined: Apr 2007
Posts: 314
Likes: 0
From: Southern Colorado
Mongo:
I live out here also, about 40 miles from you in Riverside County. You know it's a lot warmer here, but I've yet to see a temp above 190 on my trans.
I run my DP on 80 Economy for the most part, but even at 120 race setting, the trans temp still hovers right around the 185-190 mark.
I do have a new "John Wood" trans, but unless your trans is slipping a lot, I would look more at your cooling system before I checked out the trans. You might just take a water hose & nozzle and flush the fins (of your radiator & trans cooler) of all the dust it has acquired over the years. Sometimes, I have a mud puddle in the driveway after doing this, and the truck will absolutely run cooler if the radiator was particularly full of crap.
Good luck,
Richard
I live out here also, about 40 miles from you in Riverside County. You know it's a lot warmer here, but I've yet to see a temp above 190 on my trans.
I run my DP on 80 Economy for the most part, but even at 120 race setting, the trans temp still hovers right around the 185-190 mark.
I do have a new "John Wood" trans, but unless your trans is slipping a lot, I would look more at your cooling system before I checked out the trans. You might just take a water hose & nozzle and flush the fins (of your radiator & trans cooler) of all the dust it has acquired over the years. Sometimes, I have a mud puddle in the driveway after doing this, and the truck will absolutely run cooler if the radiator was particularly full of crap.
Good luck,
Richard
Trending Topics
Thread Starter
|
Postmaster
Joined: Jul 2006
Posts: 3,754
Likes: 1
From: Indianapolis
Thanks everyone- I just don't want this thing going right after my warantee goes out. I'll check the cooler out tomorrow, and I'm working on getting a 6 oh tranny cooler- not that I should need it. I might just take it back to the AAMCO guy.
BTW- on the way home today, I drove pretty good-feather the throttle (most of the time) and when I pulled up in the driveway, I was at 180*- I think something is wrong...
BTW- on the way home today, I drove pretty good-feather the throttle (most of the time) and when I pulled up in the driveway, I was at 180*- I think something is wrong...
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Postmaster
Joined: Nov 2003
Posts: 3,595
Likes: 0
From: Utah County, UT
Mongo, do you have just the stock tran cooler? or anything else in series or in place of it? The 6.0 cooler will definately bring your temps down. If you just have the stock cooler then your temps are normal for your setup. I would replace it with the 6.0 or add a trucool in series with it. Yours being an early 99 more than likely doesn't run through the radiator either, just the little cooler up front.
Thread
Thread Starter
Forum
Replies
Last Post
eric777
1999 - 2003 7.3L Power Stroke Diesel
37
May 11, 2007 10:16 PM