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Towing 4th Gen Dodge Ram Towing Questions


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  #21  
Old 05-11-2010, 09:52 PM
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Zack, I don't get it. I have 3.55 gears and same truck, heavier boat and it pulls great as long as I have it in tow/haul mode (mds on vs. off didn't change for me when pulling). Do you pull at 60-65mph? It seems all truck/vehicles have a hard time with 60-65mph when pulling, they do better at 70+ for shifting, unless you have 32" tires and 4.10 gears. I'm really surprised you're having so much shifting with 3.92's. hmmmm????? sorry dude, guess you'll need a Cummins next round!
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  #22  
Old 01-18-2011, 12:46 PM
zman9788 zman9788 is offline
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I too experienced these issues. First off, I believe someone posted that it is a 6-speed tranny. I am pretty sure it is only a 5-speed. Tow/haul just changes shift points slightly. After a few hours of shifting up and down, I finally remembered I had the digital gear shifter. Put it in 4 and it runs at 2500 rpm with 4000 lbs. at 60-65mph. it doesn't gear down unless you go up a really steep hill. Run at 70 mph, and it will shift down a lot more on even minor hills. I don't have an O/D off button. I only have a Tow/Haul and I asssumed 5th was my overdrive. I may be completely mistaken with all of this info, but 4th seemed to work great. I got a Mufflex 18" on my truck and the constant shifting was getting annoying.
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  #23  
Old 01-18-2011, 01:48 PM
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Are you sure it's kicking down a gear or is it the torque converter unlocking?
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  #24  
Old 01-18-2011, 01:50 PM
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Quote:
Originally Posted by zman9788 View Post
I too experienced these issues. First off, I believe someone posted that it is a 6-speed tranny. I am pretty sure it is only a 5-speed. Tow/haul just changes shift points slightly. After a few hours of shifting up and down, I finally remembered I had the digital gear shifter. Put it in 4 and it runs at 2500 rpm with 4000 lbs. at 60-65mph. it doesn't gear down unless you go up a really steep hill. Run at 70 mph, and it will shift down a lot more on even minor hills. I don't have an O/D off button. I only have a Tow/Haul and I asssumed 5th was my overdrive. I may be completely mistaken with all of this info, but 4th seemed to work great. I got a Mufflex 18" on my truck and the constant shifting was getting annoying.
Technically speaking it is a 6 speed transmission but because of the 2 second gears, it's classified as a 5 speed. The extra second gear is a true passing gear and isn't used in upshifting. Check out this link for more info http://www.ramforumz.com/showthread.php?t=55657

Last edited by RamTech; 01-18-2011 at 01:53 PM.
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  #25  
Old 01-18-2011, 10:48 PM
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I have 3:55 gears and pull around 4500 pounds. You are lucky to have 3:92s. Always pull in 4th gear. That should solve your problem. My experience with tow/haul does nothing more than change shift points when going up in gears. Turns off mds. No difference with torque converter staying in lock up. In driving gear, truck acts the same with or without tow/haul.
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  #26  
Old 01-19-2011, 12:14 AM
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Originally Posted by dafoot View Post
I have 3:55 gears and pull around 4500 pounds. You are lucky to have 3:92s. Always pull in 4th gear. That should solve your problem. My experience with tow/haul does nothing more than change shift points when going up in gears. Turns off mds. No difference with torque converter staying in lock up. In driving gear, truck acts the same with or without tow/haul.
The only impact Tow/haul has on MDS is it increases the rpm beyond the MDS's operational range.

To turn off MDS you have to put the trans in manual mode.
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  #27  
Old 01-19-2011, 09:31 AM
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^^^ That makes sense. When pulling the boat, I am in 4th gear, so the mds is off. For my use, tow/haul makes no difference. I supose it would if I where pulling more weight.
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Old 08-27-2016, 09:22 PM
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I have the same problem!!!! I have a 2014 5.7 Hemi with asupercharger with a lift kit and 35" tires. All that said my truckis great until I exceed 60mph. 60-70 it shifts back and forth constantly.
  • 3.21Rear Axle Ratio
  • 3.21Rear Axle Ratio (Requires EZH)
  • Transmission:8-Speed Automatic (8HP70)
    In speaking with ProCharger,they have no codes for the transmission. In speaking with Diablo (thecompany that ProCharger uses for their tune)- they feel that it's the 35"tires are causing everything being thrown off. In speaking withExtreme Offroad (who did the install)- they want me to experiment with largergears and that it "might" fix the problem. But in talking with alocal dealership they said they had codes for the transmission and mentionedsomething about "flashing" or something like that and felt hopeful.
    I’m lost but am just superunhappy with the gas mileage and with the overall performance. I average 10mpg and road trips are just “messy”…
    Anyone have thoughts orexperiences they could share?
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