recommendations or advice? just got home and will check tranny fluid tomorrow but suspect it will read at normal levels,, will inspect fluid and probly have it drained and replaced,, (good by 200 bucks)
could it have been just due to the tune selection?
engine temp was ok at 220 ish. my truck does have habit of getting engine temp up to 240 ish at end of longer grades.
i usually watch my egt's and keep them 1200-1300 max, they normally run 8-900 i think ( i think this is pre turbo)
truck description approximately: 2001 f350 7.3L 4 door LB SRW 4WD 6.0L tranny cool, 6.0L intercooler, ballbearing turbo, fancy turbo connections, banks brake (doesn't work) john woods tranny, 185K on engine. towing a 11k 33ft toyhauler
* This post was edited 11/29/20 06:12am by rockwind1 *
There is a great transmission builder in Arkansas that specializes in the 4R100 that will put your transmission problems to an end . Brian’s Truck Stop
Tuners are great for hot rodding, sometimes not so good for towing. I also had a 99 7.3. Gage went to 300 once towing on flat land. I was more than halfway to my destination so I kept going. Never happened again but I did put a trans in it just to be on the safe side. The original had 200K on it at the time.
Puma 30RKSS
cummins2014 wrote:
Never saw those temperatures after installing the 6.0 tranny cooler on my 99 Superduty 7.3 towing a 38’ fifth wheel. That 4R100 transmission is certainly not one of fords better transmissions . Google the fluid change on that 4R100 its very easy , and save yourself some money , I did it a few times during the nearly 16 years I had it .
There is a great transmission builder in Arkansas that specializes in the 4R100 that will put your transmission problems to an end . Brian’s Truck Stop
Never saw those temperatures after installing the 6.0 tranny cooler on my 99 Superduty 7.3 towing a 38’ fifth wheel. That 4R100 transmission is certainly not one of fords better transmissions . Google the fluid change on that 4R100 its very easy , and save yourself some money , I did it a few times during the nearly 16 years I had it .
There is a great transmission builder in Arkansas that specializes in the 4R100 that will put your transmission problems to an end . Brian’s Truck Stop
yes i have heard of him,,, at the time i got the john woods,, supposedly john woods was the west coast expert and brian was the east coast expert,, sadlly i am on the west coast so arkansas is long drive. it soundslike you have done fluid change yourself? how do you get the fluid out of the converter and cooler? never mind, i will google it. thanks
bucky wrote:
Looking at your profile leads me to think you have a gage/sending unit problem. With a John Woods trans and a 6.0 cooler you should be fine. If the fluid is still pink/red I wouldn't worry, just keep an eye on it.
Tuners are great for hot rodding, sometimes not so good for towing. I also had a 99 7.3. Gage went to 300 once towing on flat land. I was more than halfway to my destination so I kept going. Never happened again but I did put a trans in it just to be on the safe side. The original had 200K on it at the time.
Looking at your profile leads me to think you have a gage/sending unit problem. With a John Woods trans and a 6.0 cooler you should be fine. If the fluid is still pink/red I wouldn't worry, just keep an eye on it.
Tuners are great for hot rodding, sometimes not so good for towing. I also had a 99 7.3. Gage went to 300 once towing on flat land. I was more than halfway to my destination so I kept going. Never happened again but I did put a trans in it just to be on the safe side. The original had 200K on it at the time.
i hope so but i am not so sure and i agree on the tuners,, i got it to see if it would help with shifting. i am 56 so i do not hotrod my truck since i want it to last a long time. i only have the 4 tunes uploaded,, daily driver, fuel sipper, towing 65 hp, and towing 85 hp(which i never use) but thanks for the ideas, will looking into possibility
Another reason to slow down.
Winnebago 2101DS TT & 2022 Chevy Silverado 1500 LTZ Z71, WindyNation 300 watt solar-Lossigy 200 AH Lithium battery. Prefer boondocking, USFS, COE, BLM, NPS, TVA, state camps. Bicyclist. 14 yr. Army -11B40 then 11A - (MOS 1542 & 1560) IOBC & IOAC grad
The old transmissions are dependable but only have 4 gears. The rebuilt ones now being offered by companies like BD, have a new style of torque converter and stronger parts. They cost about $5,000 but would greatly increase the performance of the 7.3. The price is high but not compared to buying even a used 6.7. I am thinking of making the move at 175 k miles.
Your Woods tranny may already have the larger cooler.
Good luck.
Just got my 2003 7.3L F350 back from getting new injectors installed yesterday. Ran great on the way home. Good luck, I think you will be fine.
As far as changing the fluid, I just changed mine a couple of months ago following:here
If you go to Guzzle's page and look around, he has a good how to on changing the transmission fluid.
* This post was edited 11/29/20 11:16am by shadows4 *
2016 4X4 F350,CC,SB,Lariat,6.7L diesel, 140,000 miles
2015 Coachmen Chapparal 324 TSRK
B&W Patriot 16K hitch.
rockwind1 wrote:
yes i have heard of him,,, at the time i got the john woods,, supposedly john woods was the west coast expert and brian was the east coast expert,, sadlly i am on the west coast so arkansas is long drive. it soundslike you have done fluid change yourself? how do you get the fluid out of the converter and cooler? never mind, i will google it. thanks
cummins2014 wrote:
Never saw those temperatures after installing the 6.0 tranny cooler on my 99 Superduty 7.3 towing a 38’ fifth wheel. That 4R100 transmission is certainly not one of fords better transmissions . Google the fluid change on that 4R100 its very easy , and save yourself some money , I did it a few times during the nearly 16 years I had it .
There is a great transmission builder in Arkansas that specializes in the 4R100 that will put your transmission problems to an end . Brian’s Truck Stop
Never saw those temperatures after installing the 6.0 tranny cooler on my 99 Superduty 7.3 towing a 38’ fifth wheel. That 4R100 transmission is certainly not one of fords better transmissions . Google the fluid change on that 4R100 its very easy , and save yourself some money , I did it a few times during the nearly 16 years I had it .
There is a great transmission builder in Arkansas that specializes in the 4R100 that will put your transmission problems to an end . Brian’s Truck Stop
yes i have heard of him,,, at the time i got the john woods,, supposedly john woods was the west coast expert and brian was the east coast expert,, sadlly i am on the west coast so arkansas is long drive. it soundslike you have done fluid change yourself? how do you get the fluid out of the converter and cooler? never mind, i will google it. thanks
Before I decided to trade in my 99 Superduty, I was going to go with the BTS , instead of the John Woods, from everything I read the BTS was the better tranny build. I actually talked to him about a shifting problem, that was intermittent , and he sent be a valve body, thinking that was my issue . Every rebuild he does he puts in a new valve body regardless, so the one he sent me was supposedly a used one ,but okay. All I paid was the shipping. Never got around to replacing it, seemed to start shifting okay, so I just let it go. As far as tuners again ,probably one of the better ones ,and the one I ran was the DP tuner. It had a tow tune ,as well as others, plus the stock tune as well . I also went with the AIS air intake ,4" exhaust turbo back. The truck ran very well, but short of changing turbos ,injectors etc ,it just didn't have the power in the mountains for a 38' fifth wheel that I would like.
As far as the fluid change ,yes just google it ,its easier then me having to explain it, but yes the old fluid gets pumped out of the converter, and as well as the cooler, its actually as said very easy.
voodoo101 wrote:
I have a 2001 F-250 7.3 and I had to watch my tranny temps all of the time until I put the Ford V-10 tranny cooler on it. Now I never see 200 degrees. It is 40 percent bigger than the oem and comes standard with Ford tranny replacements. It should have been oem to start with since the 7.3 puts a bigger load on the tranny. Since it is an OEM for the V-10 it fits right on the bracket with no modifications.
Your Woods tranny may already have the larger cooler.
Good luck.
I have a 2001 F-250 7.3 and I had to watch my tranny temps all of the time until I put the Ford V-10 tranny cooler on it. Now I never see 200 degrees. It is 40 percent bigger than the oem and comes standard with Ford tranny replacements. It should have been oem to start with since the 7.3 puts a bigger load on the tranny. Since it is an OEM for the V-10 it fits right on the bracket with no modifications.
Your Woods tranny may already have the larger cooler.
Good luck.
If you read his original post, you will see he has the 6.0 cooler, and would suspect its the same one the V-10 had, if not the 6.0 is probably the bigger cooler. 6.0 is 31 row.
2015 Montana 3735MK Legacy,2007 3500HD GMC Dually LBZ Duramax/Allison ,Pacbrake,Firestone Airbags Bullydog Tuner
Lwiddis wrote:
“i have learned that this is the best way to get my tranny temp down) went about 50-55mph for maybe 15-20 minutes and got it back down to 145-150 degrees.”
Another reason to slow down.
“i have learned that this is the best way to get my tranny temp down) went about 50-55mph for maybe 15-20 minutes and got it back down to 145-150 degrees.”
Another reason to slow down.
I only do 65. The speed limit on that particular 2 lane is 70 mph. I call It the highway of death, because there’s so many Memorial crosses on it
voodoo101 wrote:
I have a 2001 F-250 7.3 and I had to watch my tranny temps all of the time until I put the Ford V-10 tranny cooler on it. Now I never see 200 degrees. It is 40 percent bigger than the oem and comes standard with Ford tranny replacements. It should have been oem to start with since the 7.3 puts a bigger load on the tranny. Since it is an OEM for the V-10 it fits right on the bracket with no modifications.
Your Woods tranny may already have the larger cooler.
Good luck.
I have a 2001 F-250 7.3 and I had to watch my tranny temps all of the time until I put the Ford V-10 tranny cooler on it. Now I never see 200 degrees. It is 40 percent bigger than the oem and comes standard with Ford tranny replacements. It should have been oem to start with since the 7.3 puts a bigger load on the tranny. Since it is an OEM for the V-10 it fits right on the bracket with no modifications.
Your Woods tranny may already have the larger cooler.
Good luck.
I put the 6.0L 31 row cooler on mine years ago. Worked amazing.
topjimmy wrote:
Don't have a Ford but I had a Bully dog tuner when I bought a used 2007 Duramax so I said great and tried it on tow mode on my maiden Voyage with my 5er I found out REAL QUICK going up my first stepper grade this thing SUCKS for towing my EGT's went too high and so did the tranny temps so I turned it back to Stock mode and all good again now I do not even use the tuner except for info Canned tuners suck IMO for towing
Don't have a Ford but I had a Bully dog tuner when I bought a used 2007 Duramax so I said great and tried it on tow mode on my maiden Voyage with my 5er I found out REAL QUICK going up my first stepper grade this thing SUCKS for towing my EGT's went too high and so did the tranny temps so I turned it back to Stock mode and all good again now I do not even use the tuner except for info Canned tuners suck IMO for towing
I agree, but I think power-hungry Diesel has a pretty good set up, I really like the hydra chip, they have a lot of choices and they have many tunes for a modified valve body. I went with the lowest horsepower version and I’ve been running it for years and it has always worked good until now, I’m still not sure what happened but I will be investigating, hopefully like Some said maybe it’s just a sending unit problem, I recently redid all the wiring harness is under the valve covers and also the ECB, as well as changed out the ECB of course. The problem is where I live, I don’t think there are any reputable transmission people and going down to John Wood’s in California to me is like going deep into enemy territory
cummins2014 wrote:
Before I decided to trade in my 99 Superduty, I was going to go with the BTS , instead of the John Woods, from everything I read the BTS was the better tranny build. I actually talked to him about a shifting problem, that was intermittent , and he sent be a valve body, thinking that was my issue . Every rebuild he does he puts in a new valve body regardless, so the one he sent me was supposedly a used one ,but okay. All I paid was the shipping. Never got around to replacing it, seemed to start shifting okay, so I just let it go. As far as tuners again ,probably one of the better ones ,and the one I ran was the DP tuner. It had a tow tune ,as well as others, plus the stock tune as well . I also went with the AIS air intake ,4" exhaust turbo back. The truck ran very well, but short of changing turbos ,injectors etc ,it just didn't have the power in the mountains for a 38' fifth wheel that I would like.
As far as the fluid change ,yes just google it ,its easier then me having to explain it, but yes the old fluid gets pumped out of the converter, and as well as the cooler, its actually as said very easy.
rockwind1 wrote:
yes i have heard of him,,, at the time i got the john woods,, supposedly john woods was the west coast expert and brian was the east coast expert,, sadlly i am on the west coast so arkansas is long drive. it soundslike you have done fluid change yourself? how do you get the fluid out of the converter and cooler? never mind, i will google it. thanks
cummins2014 wrote:
Never saw those temperatures after installing the 6.0 tranny cooler on my 99 Superduty 7.3 towing a 38’ fifth wheel. That 4R100 transmission is certainly not one of fords better transmissions . Google the fluid change on that 4R100 its very easy , and save yourself some money , I did it a few times during the nearly 16 years I had it .
There is a great transmission builder in Arkansas that specializes in the 4R100 that will put your transmission problems to an end . Brian’s Truck Stop
Never saw those temperatures after installing the 6.0 tranny cooler on my 99 Superduty 7.3 towing a 38’ fifth wheel. That 4R100 transmission is certainly not one of fords better transmissions . Google the fluid change on that 4R100 its very easy , and save yourself some money , I did it a few times during the nearly 16 years I had it .
There is a great transmission builder in Arkansas that specializes in the 4R100 that will put your transmission problems to an end . Brian’s Truck Stop
yes i have heard of him,,, at the time i got the john woods,, supposedly john woods was the west coast expert and brian was the east coast expert,, sadlly i am on the west coast so arkansas is long drive. it soundslike you have done fluid change yourself? how do you get the fluid out of the converter and cooler? never mind, i will google it. thanks
Before I decided to trade in my 99 Superduty, I was going to go with the BTS , instead of the John Woods, from everything I read the BTS was the better tranny build. I actually talked to him about a shifting problem, that was intermittent , and he sent be a valve body, thinking that was my issue . Every rebuild he does he puts in a new valve body regardless, so the one he sent me was supposedly a used one ,but okay. All I paid was the shipping. Never got around to replacing it, seemed to start shifting okay, so I just let it go. As far as tuners again ,probably one of the better ones ,and the one I ran was the DP tuner. It had a tow tune ,as well as others, plus the stock tune as well . I also went with the AIS air intake ,4" exhaust turbo back. The truck ran very well, but short of changing turbos ,injectors etc ,it just didn't have the power in the mountains for a 38' fifth wheel that I would like.
As far as the fluid change ,yes just google it ,its easier then me having to explain it, but yes the old fluid gets pumped out of the converter, and as well as the cooler, its actually as said very easy.
I totally agree, even towing just a 33 foot toy hauler in the mountains is a struggle with my 2001, almost any grade above 5% and I’m in second gear going about 43 miles an hour, one time on a little Highway Inn between Benton California and mammoth, I couldn’t even do that, I was in first gear I barely made it over that little summit. Although I love my truck, I like how easy it is to work on, I like the fact that it doesn’t have all of the smog **** that every other truck has, and I like that I don’t have to put in that exhaust fluid
But I do get a little jealous of the newer trucks in the way they blow by me doing 85 mph up a grade pulling a 40 ft trailer
rockwind1 wrote:
I totally agree, even towing just a 33 foot toy hauler in the mountains is a struggle with my 2001, almost any grade above 5% and I’m in second gear going about 43 miles an hour, one time on a little Highway Inn between Benton California and mammoth, I couldn’t even do that, I was in first gear I barely made it over that little summit. Although I love my truck, I like how easy it is to work on, I like the fact that it doesn’t have all of the smog **** that every other truck has, and I like that I don’t have to put in that exhaust fluid
But I do get a little jealous of the newer trucks in the way they blow by me doing 85 mph up a grade pulling a 40 ft trailer
cummins2014 wrote:
Before I decided to trade in my 99 Superduty, I was going to go with the BTS , instead of the John Woods, from everything I read the BTS was the better tranny build. I actually talked to him about a shifting problem, that was intermittent , and he sent be a valve body, thinking that was my issue . Every rebuild he does he puts in a new valve body regardless, so the one he sent me was supposedly a used one ,but okay. All I paid was the shipping. Never got around to replacing it, seemed to start shifting okay, so I just let it go. As far as tuners again ,probably one of the better ones ,and the one I ran was the DP tuner. It had a tow tune ,as well as others, plus the stock tune as well . I also went with the AIS air intake ,4" exhaust turbo back. The truck ran very well, but short of changing turbos ,injectors etc ,it just didn't have the power in the mountains for a 38' fifth wheel that I would like.
As far as the fluid change ,yes just google it ,its easier then me having to explain it, but yes the old fluid gets pumped out of the converter, and as well as the cooler, its actually as said very easy.
rockwind1 wrote:
yes i have heard of him,,, at the time i got the john woods,, supposedly john woods was the west coast expert and brian was the east coast expert,, sadlly i am on the west coast so arkansas is long drive. it soundslike you have done fluid change yourself? how do you get the fluid out of the converter and cooler? never mind, i will google it. thanks
cummins2014 wrote:
Never saw those temperatures after installing the 6.0 tranny cooler on my 99 Superduty 7.3 towing a 38’ fifth wheel. That 4R100 transmission is certainly not one of fords better transmissions . Google the fluid change on that 4R100 its very easy , and save yourself some money , I did it a few times during the nearly 16 years I had it .
There is a great transmission builder in Arkansas that specializes in the 4R100 that will put your transmission problems to an end . Brian’s Truck Stop
Never saw those temperatures after installing the 6.0 tranny cooler on my 99 Superduty 7.3 towing a 38’ fifth wheel. That 4R100 transmission is certainly not one of fords better transmissions . Google the fluid change on that 4R100 its very easy , and save yourself some money , I did it a few times during the nearly 16 years I had it .
There is a great transmission builder in Arkansas that specializes in the 4R100 that will put your transmission problems to an end . Brian’s Truck Stop
yes i have heard of him,,, at the time i got the john woods,, supposedly john woods was the west coast expert and brian was the east coast expert,, sadlly i am on the west coast so arkansas is long drive. it soundslike you have done fluid change yourself? how do you get the fluid out of the converter and cooler? never mind, i will google it. thanks
Before I decided to trade in my 99 Superduty, I was going to go with the BTS , instead of the John Woods, from everything I read the BTS was the better tranny build. I actually talked to him about a shifting problem, that was intermittent , and he sent be a valve body, thinking that was my issue . Every rebuild he does he puts in a new valve body regardless, so the one he sent me was supposedly a used one ,but okay. All I paid was the shipping. Never got around to replacing it, seemed to start shifting okay, so I just let it go. As far as tuners again ,probably one of the better ones ,and the one I ran was the DP tuner. It had a tow tune ,as well as others, plus the stock tune as well . I also went with the AIS air intake ,4" exhaust turbo back. The truck ran very well, but short of changing turbos ,injectors etc ,it just didn't have the power in the mountains for a 38' fifth wheel that I would like.
As far as the fluid change ,yes just google it ,its easier then me having to explain it, but yes the old fluid gets pumped out of the converter, and as well as the cooler, its actually as said very easy.
I totally agree, even towing just a 33 foot toy hauler in the mountains is a struggle with my 2001, almost any grade above 5% and I’m in second gear going about 43 miles an hour, one time on a little Highway Inn between Benton California and mammoth, I couldn’t even do that, I was in first gear I barely made it over that little summit. Although I love my truck, I like how easy it is to work on, I like the fact that it doesn’t have all of the smog **** that every other truck has, and I like that I don’t have to put in that exhaust fluid
But I do get a little jealous of the newer trucks in the way they blow by me doing 85 mph up a grade pulling a 40 ft trailer
Yes, there were grades that it was 30-35 in second gear , it had more , but the EGT temperatures would get too high . Didn’t know what I was missing when I bought a new Ram Cummins in 2014 .
If you are using synthetic or even blend you have a lot more room. I think all Motorcraft ATF is semi-synthetic now.
BTW, you did the right thing, backing off.
2001 F150 SuperCrew
2006 Keystone Springdale 249FWBHLS
675w Solar pictures back up
theoldwizard1 wrote:
I worked in transmission engineering over 30 years ago. While 250F is pretty hot for non-synthetic oil, it is not "over the limit". IIRC, things got bad over 270F. The simple thing to do now is pull the dip stick. If the ATF is still bright cherry read and does not smell "burnt", ho harm !
If you are using synthetic or even blend you have a lot more room. I think all Motorcraft ATF is semi-synthetic now.
BTW, you did the right thing, backing off.
I worked in transmission engineering over 30 years ago. While 250F is pretty hot for non-synthetic oil, it is not "over the limit". IIRC, things got bad over 270F. The simple thing to do now is pull the dip stick. If the ATF is still bright cherry read and does not smell "burnt", ho harm !
If you are using synthetic or even blend you have a lot more room. I think all Motorcraft ATF is semi-synthetic now.
BTW, you did the right thing, backing off.
i finally did pull dipstick,, it is still pink and smells ok. i did notice the dipstick tube holder is quite loose and it was never like that before.
i am sure it is synthetic,,, i ran amsoil synthetic for years until last fluid change when the local shop put their brand synthetic in it.
time2roll wrote:
If you were running Type F fluid I would be a bit more concerned. Stay in tow mode to keep the TC locked and just continue on as you have.
If you were running Type F fluid I would be a bit more concerned. Stay in tow mode to keep the TC locked and just continue on as you have.
i am positive it is synthetic. what do you mean by tow mode? i am running tow tunes,, but i don't have a tow mode button per se,,,, the problem is is that the only time my tranny stays cool is in 4th gear,,, whenever i go to 3rd or 2nd, even with the little padlock" lock" symbol on, it will slowly heat up,, like something is slipping obviously,,,
what could be slipping i wonder.
rockwind1 wrote:
i have forgotten to put it in the usual 65hp tow mode,,, i can't believe that would do it but something certainly did.
Maybe I miss interpreted what this said.
i have forgotten to put it in the usual 65hp tow mode,,, i can't believe that would do it but something certainly did.
theoldwizard1 wrote:
I worked in transmission engineering over 30 years ago. While 250F is pretty hot for non-synthetic oil, it is not "over the limit". IIRC, things got bad over 270F. The simple thing to do now is pull the dip stick. If the ATF is still bright cherry read and does not smell "burnt", ho harm !
If you are using synthetic or even blend you have a lot more room. I think all Motorcraft ATF is semi-synthetic now.
BTW, you did the right thing, backing off.
I worked in transmission engineering over 30 years ago. While 250F is pretty hot for non-synthetic oil, it is not "over the limit". IIRC, things got bad over 270F. The simple thing to do now is pull the dip stick. If the ATF is still bright cherry read and does not smell "burnt", ho harm !
If you are using synthetic or even blend you have a lot more room. I think all Motorcraft ATF is semi-synthetic now.
BTW, you did the right thing, backing off.
i sent you a pm with some questions if you had time to take a look, no worries if not.
time2roll wrote:
rockwind1 wrote:
i have forgotten to put it in the usual 65hp tow mode,,, i can't believe that would do it but something certainly did.
Maybe I miss interpreted what this said.i have forgotten to put it in the usual 65hp tow mode,,, i can't believe that would do it but something certainly did.
sorry, it was probably confusing the way i worded it.
well, on my hydra chip, which is the tune setup from powerhungry performance, which i can switch tunes while driving, i downloaded 4 tunes to choose from as i drive,
#1 daily driver 65hp fuel sipper
#2 towing 65 hp
#3 towing 80 hp
#4 40 hp daily driver
so when i tow i put it in #2
i don't have a factory tow button to press like some vehicles, which is what i thought you were referring to
but i had been driving around in #1 before i hooked up my trailer and drove off and i didn't put it in the towing mode, #2 that i have been using for years.
i am pretty sure ihave done this before, and vice versa, where i drive with out a trailer and leave it in the towing tune. what i have noticed when towing but not in the towing tune is that it shifts harder
rockwind1 wrote:
sorry, it was probably confusing the way i worded it.
well, on my hydra chip, which is the tune setup from powerhungry performance, which i can switch tunes while driving, i downloaded 4 tunes to choose from as i drive,
#1 daily driver 65hp fuel sipper
#2 towing 65 hp
#3 towing 80 hp
#4 40 hp daily driver
so when i tow i put it in #2
i don't have a factory tow button to press like some vehicles, which is what i thought you were referring to
but i had been driving around in #1 before i hooked up my trailer and drove off and i didn't put it in the towing mode, #2 that i have been using for years.
i am pretty sure ihave done this before, and vice versa, where i drive with out a trailer and leave it in the towing tune. what i have noticed when towing but not in the towing tune is that it shifts harder
time2roll wrote:
rockwind1 wrote:
i have forgotten to put it in the usual 65hp tow mode,,, i can't believe that would do it but something certainly did.
Maybe I miss interpreted what this said.i have forgotten to put it in the usual 65hp tow mode,,, i can't believe that would do it but something certainly did.
sorry, it was probably confusing the way i worded it.
well, on my hydra chip, which is the tune setup from powerhungry performance, which i can switch tunes while driving, i downloaded 4 tunes to choose from as i drive,
#1 daily driver 65hp fuel sipper
#2 towing 65 hp
#3 towing 80 hp
#4 40 hp daily driver
so when i tow i put it in #2
i don't have a factory tow button to press like some vehicles, which is what i thought you were referring to
but i had been driving around in #1 before i hooked up my trailer and drove off and i didn't put it in the towing mode, #2 that i have been using for years.
i am pretty sure ihave done this before, and vice versa, where i drive with out a trailer and leave it in the towing tune. what i have noticed when towing but not in the towing tune is that it shifts harder
You might want to talk to DP tuners, IMO they are the guru for the 7.3. I have no doubt you would be happy with their tuning on the 7.3.