getting hot - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 12 (permalink) Old 03-08-2012, 12:12 AM Thread Starter
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getting hot

My transmission seemed to be running hot this evening. My truck is a 2000 F-350 with an automatic. Having only owned this truck for less then a month I know nothing about it's history but there is paperwork in the glove box that indicates that the transmission was replaced with a Ford transmission and the tranny is definitely cleaner then the rest of the under side of the truck. Unfortunately I have no idea what model the tranny is so if you could enlighten me on how to find that out it would help.
The tranny temp gauge has never gotten above 150 but this evening while just casually driving around town, no hot rodding, 67 degree outside temps it got up to 180+ .
What is a normal operating temp and what might be the cause of this much temperature rise.

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post #2 of 12 (permalink) Old 03-08-2012, 12:36 AM
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Re: getting hot

I wouldn't say that's too bad especially if "driving around town" included some stop and go. The temps on mine ('01 F-250) will run 150-160 empty or towing @ 70 MPH on a level road with ambient temps in the 70's but once I get in town it goes up. It's never been over 180 since I've had my ScanGauge II but that's only been a few weeks. The auto transmission is a 4R100 in all 7.3L so I've been told.
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post #3 of 12 (permalink) Old 03-08-2012, 01:04 AM
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Re: getting hot

Quote:
Originally Posted by Uncle Salty View Post
The auto transmission is a 4R100 in all 7.3L so I've been told.
Except in the 94.5-97 OBS 7.3 PS's they had the E4OD.

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post #4 of 12 (permalink) Old 03-08-2012, 01:43 AM
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Re: getting hot

Quote:
Originally Posted by 444getsitdone View Post
Except in the 94.5-97 OBS 7.3 PS's they had the E4OD.
Oops. Yeah, the earlier 7.3 had E4OD.
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post #5 of 12 (permalink) Old 03-08-2012, 01:53 AM
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Re: getting hot

I guess it also depends on how/where you are measuring it.
My recently installed HD4R100 Ford Reman runs 70-75 above ambient when measured in the test plug and running unloaded after about 1/2 hour. My ScanGauge II normally reads 10-15 deg higher.

2011 Ford F-250 SuperDuty CCSB 7.3 PSD - HD 4R100, MBRP 4" XP Exhaust w/ Muffler, PHP FU Chip, AIS Intake, Zoodad, Fumoto Valve, 285/75R16E BFG AT KO, Pioneer AVIC-Z130BT In-Dash Nav, BOYO Back Up Camera, Scangauge II, GLowshift 3 Gauge Pod (EGT,TFT,Boost)

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post #6 of 12 (permalink) Old 03-08-2012, 02:10 AM Thread Starter
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Re: getting hot

Still not sure why up until now it hasn't gotten above 150 and today it goes to 180.
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post #7 of 12 (permalink) Old 03-08-2012, 11:07 AM
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Re: getting hot

The only reason I can think of is warmer ambient air temperature and driving around at slower speeds with the torque converter unlocked. Where is the sending unit/sensor? !80 isn't cause for panic but I would continue to monitor. Search for posts by Mark Kovalsky. I trust his opinion and he has posts about fluid temp maximums and sending unit locations, etc.
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post #8 of 12 (permalink) Old 03-09-2012, 02:28 PM
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Re: getting hot

It could have gotten hotter due to more stop and go driving. 180 is nothing to be concerned about.

Mark
Former Ford Automatic Transmission Engineer

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post #9 of 12 (permalink) Old 03-09-2012, 03:03 PM
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Re: getting hot

I have those junk glowshift gauges, idk if my gauge is wrong (boost and EGT quit working) but mine hit 260 in stop and go last May. While in the winter it wouldn't go above 140. Idk where you're from but 180 isn't bad if it's somewhat warm out, now if you live where it averages 30 degrees everyday, then I'd be worried about when it starts getting warm.

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post #10 of 12 (permalink) Old 03-09-2012, 03:48 PM
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Re: getting hot

you dont have to worry about trans temps until you go over 200... anything over 220 and your cooking your oil and should start getting ready to buy a new transmission...
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