Tow/Haul mode
From : eisboch
Q: the new 5 speed auto transmission used in the hemi powered rams has a tow/haul mode as opposed to the older 4 speed overdrive off mode. the advertisements for the new transmission claim that the tow/haul mode holds the transmission in a particular gear longer minimizing gear hunting when towing and also automatically downshifts when going down steep hills to provide engine braking. my question does anyone know if the new tow/haul mode prevents the transmission from going into overdrive on straight and level roads i have a new 2500 ram and plan to tow about 6000 lbs to florida from ma once the breaking period is over. tia eisboch .
Replies:
From : redneck tookover hell
why dont you turn it on and take a drive have you read your owners manual the advertisements for the new transmission claim that the tow/haul mode holds the transmission in a particular gear longer minimizing gear hunting when towing and also automatically downshifts when going down steep hills to does anyone know if the new tow/haul mode prevents the transmission from going into overdrive on straight and level roads a dyslexic man walks into a bra. .
From : hdinny
mac davis wrote on tue 30 sep 2003 151502 gmt hdinny error@error.com wrote snipped i looked back through the posts and dont find what year and engine you have. the engine makes a difference as you already know. hd in ny 01 dak club cab with 4.7 auto & 3.55... tow weight at 5150 same setup with 3.92 gears is rated at 6450 in that case if you dont mind taking off a little slower and shifting down on the grades you should be okay. the chassis is the same so the only reason for the tow eight difference is the rear end. as long as you dont tow in odrive and manually shift down on steep grades there is no reason your truck wont work okay. just as long as you have the tow package or install all the cooling enhancements both engine and transmission you sound good to go. hd in ny 2003 ram qc 1500 hemi 3.55 2000 hr alumascape 29 fsk .
From : hdinny
eisboch wrote the new 5 speed auto transmission used in the hemi powered rams has a tow/haul mode as opposed to the older 4 speed overdrive off mode. the snipped in the gm version of tow/haul it will go in od about 62 mph dont know how the dc works. but id like to know if its a computer change that could be programmed into the earlier hemi versions. hd in ny .
From : eisboch
why dont you turn it on and take a drive have you read your owners manual the advertisements for the new transmission claim that the tow/haul mode holds the transmission in a particular gear longer minimizing gear hunting when towing and also automatically downshifts when going down steep hills to does anyone know if the new tow/haul mode prevents the transmission from going into overdrive on straight and level roads ok. answer to second question - yes i read it and it doesnt say. first question - good advice. i did today and it answered my own question. eisboch .
From : richardson brian
what was the answer why dont you turn it on and take a drive have you read your owners manual the advertisements for the new transmission claim that the tow/haul mode holds the transmission in a particular gear longer minimizing gear hunting when towing and also automatically downshifts when going down steep hills to does anyone know if the new tow/haul mode prevents the transmission from going into overdrive on straight and level roads ok. answer to second question - yes i read it and it doesnt say. first question - good advice. i did today and it answered my own question. eisboch .
From : eisboch
is the tow/haul exclusive to 2500s my 03 1500 w/hemi does not seem to have a tow/haul just overdrive. -- i dont know. only looked at the 04 2500. ive discovered that its a kick to put it in tow/haul mode when driving around on the back roads not towing anything. the gearing seems to bring out the best of the hemis power curve. eisboch .
From : matt kinsinger
is the tow/haul exclusive to 2500s my 03 1500 w/hemi does not seem to have a tow/haul just overdrive. -- http//www.highoctaneracing.com/ not your average car club. http//www.dodgetruckworld.com/mygallery.aspid=4620 the new 5 speed auto transmission used in the hemi powered rams has a tow/haul mode as opposed to the older 4 speed overdrive off mode. the advertisements for the new transmission claim that the tow/haul mode holds the transmission in a particular gear longer minimizing gear hunting when towing and also automatically downshifts when going down steep hills to provide engine braking. my question does anyone know if the new tow/haul mode prevents the transmission from going into overdrive on straight and level roads i have a new 2500 ram and plan to tow about 6000 lbs to florida from ma once the breaking period is over. tia eisboch .
From : mac davis
on sat 04 oct 2003 204421 gmt matt kinsinger mrk20@uakron.edu wrote is the tow/haul exclusive to 2500s my 03 1500 w/hemi does not seem to have a tow/haul just overdrive maybe its part of a tow package option .
From : richardson brian
i have the tow package on my 03 all i have is the od off button. it does seem like when you lock out the 4th and 5th gears it also changes the shift points slightly and uses engine braking more. is the tow/haul mode a separate button on the 04 on sat 04 oct 2003 204421 gmt matt kinsinger mrk20@uakron.edu wrote is the tow/haul exclusive to 2500s my 03 1500 w/hemi does not seem to have a tow/haul just overdrive maybe its part of a tow package option .
From : maceisboch
hi all 92 dodge w150 4x4 318 magnum auto trans. over a year ago i started having starting problems turn the key and nothing would happen. no clicking no slow turn nothing at all. dash lights come on but would go out when key turned fully forward. seemed that running the shift selector up and down a couple times would help so i had the neutral safety switch replaced. didnt help. went to a different garage and they replaced the ignition lock cylinder this didnt help. same garage finally found a leaking freeze plug that had been leaking on the starter and was supposedly shorting it out. replaced the starter and that worked for a couple weeks. now back where i started less about $700 and still having same problem. again running the shift selector up and down once and it starts fine. anyone have any thoughts could it be a simple shift linkage issue if so shouldnt the garage have caught it a few hundred dollars earlier please remove nospam from email to reply or simply post. thanks -mac .
From : 351cj
and the answer was why dont you turn it on and take a drive have you read your owners manual the advertisements for the new transmission claim that the tow/haul mode holds the transmission in a particular gear longer minimizing gear hunting when towing and also automatically downshifts when going down steep hills to does anyone know if the new tow/haul mode prevents the transmission from going into overdrive on straight and level roads ok. answer to second question - yes i read it and it doesnt say. first question - good advice. i did today and it answered my own question. eisboch .
From : eisboch
what was the answer and the answer was sorry forgot to pass on the info. yes the transmission shifts into overdrive in the tow/haul mode except the gear ratio is somehow different than it is with the tow/haul mode off. tow/haul mode off 70 mph = 1900 rpm engine speed. tow/haul mode on 70 mph = 2200 rpm engine speed. i cant determine the rpm difference in the other gears but it acts as advertised meaning the shifts are sharper and the engine revs slightly higher before shifting. i like it much more than the older 4 speed that i had in a 2001 ram 2500. in that truck the engine rpm was around 2200 at 65 mph using overdrive and almost 2800 at 65-70 mph with overdrive disabled. both trucks have the 4.10 rear end. eisboch .
From : eisboch
yes the transmission shifts into overdrive in the tow/haul mode except the gear ratio is somehow different than it is with the tow/haul mode off. tow/haul mode off 70 mph = 1900 rpm engine speed. tow/haul mode on 70 mph = 2200 rpm engine speed. i cant determine the rpm difference in the other gears but it acts as advertised meaning the shifts are sharper and the engine revs slightly higher before shifting. i like it much more than the older 4 speed that i had in a 2001 ram 2500. in that truck the engine rpm was around 2200 at 65 mph using overdrive and almost 2800 at 65-70 mph with overdrive disabled. both trucks have the 4.10 rear end. eisboch correction i think to my statement above. this morning i found another section in the manual that states that 5th gear is disabled in the tow/haul mode and the other gear shift points are modified. but then it goes on to say that the transmission will shift into overdrive 4th gear on straight and level roads. so is 5th gear a lower ratio than overdrive confusing. eisboch .
From : tbone
does it say that 4th is an overdrive gear it sounds like 4th is the 1 to 1 gear and 5th is the overdrive on a 5 speed automatic pretty much like a 5 speed standard. -- if at first you dont succeed youre not cut out for skydiving yes the transmission shifts into overdrive in the tow/haul mode except the gear ratio is somehow different than it is with the tow/haul mode off. tow/haul mode off 70 mph = 1900 rpm engine speed. tow/haul mode on 70 mph = 2200 rpm engine speed. i cant determine the rpm difference in the other gears but it acts as advertised meaning the shifts are sharper and the engine revs slightly higher before shifting. i like it much more than the older 4 speed that i had in a 2001 ram 2500. in that truck the engine rpm was around 2200 at 65 mph using overdrive and almost 2800 at 65-70 mph with overdrive disabled. both trucks have the 4.10 rear end. eisboch correction i think to my statement above. this morning i found another section in the manual that states that 5th gear is disabled in the tow/haul mode and the other gear shift points are modified. but then it goes on to say that the transmission will shift into overdrive 4th gear on straight and level roads. so is 5th gear a lower ratio than overdrive confusing. eisboch .
From : eisboch
i have the tow package on my 03 all i have is the od off button. it does seem like when you lock out the 4th and 5th gears it also changes the shift points slightly and uses engine braking more. is the tow/haul mode a separate button on the 04 nope. same button on the end of the gear shift as before except it says tow/haul instead of overdrive off. light on dash lights up with tow/haul when engaged. eisboch .
From : hdinny
tbone wrote does it say that 4th is an overdrive gear it sounds like 4th is the 1 to 1 gear and 5th is the overdrive on a 5 speed automatic pretty much like a 5 speed standard. nope. 4th is .75 to 1 5th is .67 to 1. so tow/haul is locking out the .67. i wonder then if the shift down to second changes on the upshift 1st is 31 2nd is 1.671 3rd is 11 4th is .751 and 5th is .671. on kick down 2nd comes back to 1.51. hd in ny for now .