7.3 trans temps? towing ?'s - Diesel Truck Forum - TheDieselGarage.com
Thread Details Posted by joeseppy, this thread has received 9 replies and been viewed 2021 times.

 
LinkBack Thread Tools Display Modes
post #1 of 10 (permalink) Old 07-19-2010, 06:20 PM Thread Starter
Member
 
Join Date: Jun 2007
Posts: 67
Points: 4,443
Thanks: 0
Thanked 1 Time in 1 Post
7.3 trans temps? towing ?'s

hello all, got 107,000km's on my 2 f350 crew, gonna tow a enclosed car trailer this weekend, and have never towed nything that heavy, anything i should be looking for? can you tow in overdrive? installed a set og guages a while back, just serviced my trans , filter and flushed with 20 litres of new oil. around town in 25c weather it runs 120 degrees f is this normal?
thanks in advance

2002 f350 crew short,sct tuner(tunes by tad)econo , tow , and max power, afe stage 2 intake, mbrp 4 inch exhaust,285/75/16bfg at's,remote start,guages,2006 grill/harley headlamps,foil delete
joeseppy is offline  
Sponsored Links
Advertisement
 
post #2 of 10 (permalink) Old 07-19-2010, 06:25 PM
Senior Member
 
plainredtruck's Avatar
 
Join Date: Dec 2008
Location: Hickory Tavern, SC
Posts: 4,090
Points: 30,112
Thanks: 275
Thanked 444 Times in 285 Posts
Images: 11
120 F actually seems perfect for the ambient temp you listed.

How heavy is the car trailer?

What is the terrain over which you will be towing?

prt

'99 F250 X-cab 2wd

powered by DP-Tuner

My Photography addiction


Mafia # 27






plainredtruck is offline  
post #3 of 10 (permalink) Old 07-19-2010, 06:29 PM
Senior Member
 
4cstr's Avatar
 
Join Date: May 2005
Location: South Dakota
Posts: 8,265
Points: 89,869
Thanks: 245
Thanked 713 Times in 340 Posts
Images: 35
Yes, you can tow in overdrive. Just don't let the tranny "hunt" for gears when towing uphill.

Your temps seem fine. Anything from 70* to 90* over ambient is fine from what I have been told.

~Dave~

2012 F350 KR Dually, stock...bone stock.

early 99 PSD CC F250, DP Tuner F-5, Stealth Stage I, Casserly 160cc singles, Monsterbox Tranny, MBRP cool duals, ITP Regulated fuel system, Cobalts and Performax gauges, and way to much else to remember right now. **traded**

2004 Excursion Limited 6.0L, Dipricol gauges on the A-Pillar, Bilsteins and BFG's on the corners, lost EGR (not looking hard for it either), ARP studs, RCD Black Onyx head gaskets, MBRP 4" exhaust, (labor performed by Dan @ Midwest Transmission) **giggled when traded**

Quote:
I'm pretty good at drinkin beer -Billy Currington
4cstr is offline  
post #4 of 10 (permalink) Old 07-19-2010, 09:02 PM
Senior Member
 
BillsFan's Avatar
 
Join Date: Jan 2009
Location: Summit Point, WV
Posts: 928
Points: 32,577
Thanks: 107
Thanked 113 Times in 75 Posts
Garage
I just towed a 7000# travel trailer 5 hours through 100* heat this past weekend.

I was seeing tranny temps of 180-190* cruising between 65 and 70 mph. Without the trailer I was in the 150-160* range.

2002 F350XLT SRW 4x4 CrewCab 160k 2" Leveling Kit, Warn Premium Hubs, Prodigy TBC, Hankook DynaPro ATM's, '08 Diff Cover, Foil Delete, Edge Evolution II, Tymar Intake, 4" Turbo Back Diamond Eye Exhaust, DieselSite Coolant Filtration System & DieselSite Engine / Intercooler Boots!



Thanks to Dale @ Tymar Performance
and Bob @ DieselSite!


TDG Singles Club Member #73

Ridin' Dirty #64
BillsFan is offline  
post #5 of 10 (permalink) Old 07-19-2010, 11:58 PM Thread Starter
Member
Threadstarter
 
Join Date: Jun 2007
Posts: 67
Points: 4,443
Thanks: 0
Thanked 1 Time in 1 Post
some mouintainous terrain in northern b.c. but going to flatland alberta , hauling a new 26 foot enclosed car trailer and a 3200 car in it on the way back, on the way back it is all down hill though...

should i tow it stock, or with my dp tow tunes?

2002 f350 crew short,sct tuner(tunes by tad)econo , tow , and max power, afe stage 2 intake, mbrp 4 inch exhaust,285/75/16bfg at's,remote start,guages,2006 grill/harley headlamps,foil delete
joeseppy is offline  
post #6 of 10 (permalink) Old 07-20-2010, 03:08 AM
Junior Member
 
hayjayhorses's Avatar
 
Join Date: Dec 2006
Location: Palmer, Massachusetts
Posts: 645
Points: 73,765
Thanks: 3
Thanked 48 Times in 48 Posts
were did you mount your tranny temp probe? If you put it in the pressure port in the case that will only give you case temp. If you look at a 4R100/E4OD that is gutted the case is about a 1.5" to 2" thick the fluid doesn't really pass over the probe.

In my '00 F550 I have a probe in the pressure port (PPT) and a probe in the cooler line coming out of the front of the tranny (Torque converter drain) I like to call this Torque converter Temp (TCT).

I have seen my TCT @ 250* while the PPT is @ 185* while driving in the city, all torque converter no TC lock up.

I have seen my TCT @ 160* while the PPT is @ 175* while driving on the highway, the TC locked. on the same 90* day hauling a load of hay, GCVW about 35,000#'s

I feel the most important place to monitor the tranny temp is at the torque converter drain that is were you will get the most heat. For example when I come off the highway (with or without a load) the TCC unlocks and I can watch the temp go from 140* to 220* by the time I get to the toll booth, then I drive off and and the temp rises a little bit and as soon as the TC lockup (2nd gear 30-35mph) the temp falls fast from 240* to 180* and then a few miles down the road (if the TCC stays locked) it falls to 140*. The PPT stayed the same the whole time.

Another example last week, the air temp was high 90's, I was hauling 10 horses in my 8x32' stock trailer. The last 15 miles of the trip were on windy, hilly dirt roads, I had to drive slow 20-30 mph after a few miles the TCT was 220-230* and the PPT was 160*ish by the time I got to the farm the TCT was 250* and the PPT was 190*. That's O.K. if you leave the truck running as I did.

As a rule of thumb I do not shut off my SLUSH-O-MATIC trucks until the TCT is less than 180*

TCC Torque Converter Clutch
TCT Torque Converter Temp
PPT Pressure Port Temp

Jay Noone
413-222-8286
I got hay
abolish the Federal Reserve, they are the real problem

Vote Ron Paul 2012
hayjayhorses is offline  
post #7 of 10 (permalink) Old 07-20-2010, 03:58 AM
Senior Member
 
4cstr's Avatar
 
Join Date: May 2005
Location: South Dakota
Posts: 8,265
Points: 89,869
Thanks: 245
Thanked 713 Times in 340 Posts
Images: 35
Quote:
Originally Posted by joeseppy View Post
some mouintainous terrain in northern b.c. but going to flatland alberta , hauling a new 26 foot enclosed car trailer and a 3200 car in it on the way back, on the way back it is all down hill though...

should i tow it stock, or with my dp tow tunes?
If you have a tow tune from Jody, then you can tow with it without fear.

~Dave~

2012 F350 KR Dually, stock...bone stock.

early 99 PSD CC F250, DP Tuner F-5, Stealth Stage I, Casserly 160cc singles, Monsterbox Tranny, MBRP cool duals, ITP Regulated fuel system, Cobalts and Performax gauges, and way to much else to remember right now. **traded**

2004 Excursion Limited 6.0L, Dipricol gauges on the A-Pillar, Bilsteins and BFG's on the corners, lost EGR (not looking hard for it either), ARP studs, RCD Black Onyx head gaskets, MBRP 4" exhaust, (labor performed by Dan @ Midwest Transmission) **giggled when traded**

Quote:
I'm pretty good at drinkin beer -Billy Currington
4cstr is offline  
post #8 of 10 (permalink) Old 07-20-2010, 07:02 PM
Kip
In the passing lane
 
Kip's Avatar
 
Join Date: Dec 2008
Posts: 1,453
Points: 48,381
Thanks: 56
Thanked 77 Times in 67 Posts
I towed our toyhauler this weekend in 100* weather with no problems I have a 6.0 cooler though but our trailer is about 14k loaded. Its fine to pull in overdrive as long as your not hunting for gears on the hills.

2005 2500HD DIRTYMAX 6in lift, dual exhaust, afe airbox. Tuner soon to come

2001 PSD shortbed crewcab, ATS tranny edge juice w/attitude, Superchips programmer, Gauges, exhaust, 4inch lift w/35s, (SOLD)

Originally Posted by sledneck57
Your sweating like a queer holding a hot dog.lol.
Kip is offline  
post #9 of 10 (permalink) Old 07-20-2010, 08:46 PM Thread Starter
Member
Threadstarter
 
Join Date: Jun 2007
Posts: 67
Points: 4,443
Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by hayjayhorses View Post
were did you mount your tranny temp probe? If you put it in the pressure port in the case that will only give you case temp. If you look at a 4R100/E4OD that is gutted the case is about a 1.5" to 2" thick the fluid doesn't really pass over the probe.

In my '00 F550 I have a probe in the pressure port (PPT) and a probe in the cooler line coming out of the front of the tranny (Torque converter drain) I like to call this Torque converter Temp (TCT).

I have seen my TCT @ 250* while the PPT is @ 185* while driving in the city, all torque converter no TC lock up.

I have seen my TCT @ 160* while the PPT is @ 175* while driving on the highway, the TC locked. on the same 90* day hauling a load of hay, GCVW about 35,000#'s

I feel the most important place to monitor the tranny temp is at the torque converter drain that is were you will get the most heat. For example when I come off the highway (with or without a load) the TCC unlocks and I can watch the temp go from 140* to 220* by the time I get to the toll booth, then I drive off and and the temp rises a little bit and as soon as the TC lockup (2nd gear 30-35mph) the temp falls fast from 240* to 180* and then a few miles down the road (if the TCC stays locked) it falls to 140*. The PPT stayed the same the whole time.

Another example last week, the air temp was high 90's, I was hauling 10 horses in my 8x32' stock trailer. The last 15 miles of the trip were on windy, hilly dirt roads, I had to drive slow 20-30 mph after a few miles the TCT was 220-230* and the PPT was 160*ish by the time I got to the farm the TCT was 250* and the PPT was 190*. That's O.K. if you leave the truck running as I did.

As a rule of thumb I do not shut off my SLUSH-O-MATIC trucks until the TCT is less than 180*

TCC Torque Converter Clutch
TCT Torque Converter Temp
PPT Pressure Port Temp

i installed my probe in the hole on the drivers side front of the trans , just pulled a plug out and stuck it in there, so which one is that? does that mean the fluid is hotter or lower than indicated by the guage?

2002 f350 crew short,sct tuner(tunes by tad)econo , tow , and max power, afe stage 2 intake, mbrp 4 inch exhaust,285/75/16bfg at's,remote start,guages,2006 grill/harley headlamps,foil delete
joeseppy is offline  
post #10 of 10 (permalink) Old 07-20-2010, 11:39 PM
Supporting Vendor
 
Join Date: Nov 2005
Posts: 1,339
Points: 33,397
Thanks: 12
Thanked 36 Times in 32 Posts
Quote:
Originally Posted by joeseppy View Post
i installed my probe in the hole on the drivers side front of the trans , just pulled a plug out and stuck it in there, so which one is that? does that mean the fluid is hotter or lower than indicated by the guage?
That is what hayjayhorses is referring to as Pressure Port Temp. I have done a limited amount of tracking of temps to and from the cooler (it sounds like he is referring to Torque Converter Temp as the line from the trans to the cooler). I saw reasonably good correlation between the pressure port and the line out to the cooler, but I didn't run it for a wide variety of conditions (this was just a temporary setup). I have regularly tracked temps in the pressure port and the pan, and found that the pressure port will "lead" the pan temp when the temps are increasing due to load, but the pan will run hotter sitting in traffic with little airflow over the trans cooler.

I have read some posts on a forum from a former Ford transmission design engineer, and he recommended watching the cooler return line (from cooler to trans) as the most critical.

Regards,
Michael Pliska

ISSPRO Engineering Manager

1995 F350 PSD Crew Cab Dually, 271k miles
10 ISSPRO Prototype Performax™ gauges in Pillar & Overhead pods & sitting on dash, Tymar Intake, Gutted EBPV, Tymar 3x4" downpipe, Tymar 5" exhaust, Cat's hiding in the shed, Baby Swamps, Swamps tunes, Tricumulator springs and Accumulator Valve, Tru-Cool 4590 Trans Cooler, Lock-Right Locker
1998 S&S 9.5' slide-in camper
32' enclosed tag trailer with 2 drag cars (73 Vega Super-Gas & 74 Vega ET Super-Pro)
1992 GMC Typhoon, 1973 Chevy Blazer with Pontiac 400, 1973 Trans-Am 455
2000 VW Jetta TDI - Kerma tune, Der Chimera Stage II Clutch
NRA member and certified firearms instructor, GOA Life member, IDPA member
Michael is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Diesel Truck Forum - TheDieselGarage.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Trans temps ? Stacked6600 1994-2003 7.3L Power Stroke 11 07-08-2010 05:08 AM
210 towing & trans temps hotrodstones 2008-2010 6.4L Engine Tuner Forum 17 05-04-2010 09:16 PM
Trans Temps stmline 2003-2007 6.0L Power Stroke 2 01-14-2010 10:58 AM
What are you temps when towing??? mmayo 2008-2010 6.4L Power Stroke 15 01-12-2009 05:42 PM
Maximun Coolant temps when towing BCFlyfisher 2003-2007 6.0L Power Stroke 5 11-01-2007 04:20 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome