Is this okay???? Please help! - Hemi Truck Club
 
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Old 06-08-2013, 09:46 PM   #1
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Unhappy Is this okay???? Please help!

When I tow my 5th wheel on the interstate the RPM ranges from 2500rpm to around 4100rpm. The speed is between 60mph-75mph. The RPM tends to stay in the upper 3000 range most of the time. I live near the mountains so the grades are long and plenty. Coming back from an extended trip today I noticed the Transmission temp was steady around the 220 range. I tried the tow/haul switch but that seemed to make the RPM's even higher and the shift was around the 4200-4500 range and then went to 2000 and immediately back to 4200. I fear I doing major damage to my transmission.
What would be a "normal" range of RPM for a setup like I have? I don't know, maybe a 3/4 ton is in my near future if I want to keep my 5th wheel.

Do any of you have advice or a possible solution? I thought about a tuner card but then the question is which one and will it really help?

Here is my setup. 2009 SLT Quadcab 4x4 5.7L Hemi with 3.55 gears. Tire size LT275/65R20.

All help will be greatly appreciated as long as it doesn't tell me my truck sucks and I need to buy a diesel.

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Old 06-08-2013, 10:24 PM   #2
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It sounds like your truck is a bit light for what you are asking of it. But I would rcommend slowing down to a steady 55mph and run with the O/D off. No prolong 4000> pulls. The 3:55 gear is your main problem and a 4:56 would solve most of you tow problem. Good luck...
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Old 06-08-2013, 11:15 PM   #3
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It may be slipping a tad to those rpms are kinda high especially for the gear ratio with a 5th wheel you should have a 2500 or bigger truck though that's maxing the tow rating out I beta
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Old 06-08-2013, 11:17 PM   #4
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My dad always told me to get the right tool for the job. If you do allot of towing, especially in the mountains. You need a truck that's built for it. A 2500 or even a 3500 Dodge Ram is what you need.
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Old 06-09-2013, 09:47 AM   #5
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Thanks for the replies guys. I'm going to look at 3/4 tons today. I should be set by the middle of the week.
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Old 06-09-2013, 09:54 AM   #6
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Quote:
Originally Posted by Redtruck-VA View Post
But I would recommend slowing down to a steady 55mph and run with the O/D off
and you won't be that guy trying to change tires on the shoulder
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Old 06-10-2013, 04:23 AM   #7
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thats all i do when im movein the travel trailer. take my time...but i dont see those rpms...3400 was the most i seen and that was slightly gaining speed on a hill.22-2300 was usually enough to hold speed on many slight hills and up grades.
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Old 06-13-2013, 02:33 AM   #8
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Thanks for the replies guys. I'm going to look at 3/4 tons today. I should be set by the middle of the week.
Try to find a 2012 or older if you want to mod your truck... EPA fixed so that 2013 and up you can't really do the good mods to them!
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Old 06-13-2013, 08:14 PM   #9
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This may not be a very popular reply on the HEMI forum...but to me it sounds like you really should have a diesel truck. Every time I tow my camper, I wish I had gotten one. How much does your camper weigh?
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Old 06-13-2013, 08:33 PM   #10
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There a few of us that have went to the Cummins on here! But I still own a HEMI in the wife's 2013 Durango!!
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