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Mike01
Unregistered


5/08/2001
21:12:37

Subject: Towing & Tranny Heat
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Message:
Hey people, I have a question about the Heavy Duty Service Group. I have a 01 QC 4x4 4.7 3.55 with the Heavy Duty Service group. I notice that after towing my boat 20 mi (which weight 3400lbs)that the damn tranny cooler is so damn hot i can hearly touch it. Now heres the problem, ill be towing my pop-up with is 3500lbs into the mountains of NC in a few weeks and was wondering if the tranny is gonna take it. ANy comments??
Thanks in advance
mike



Wayne
*GenIII*
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5/09/2001
08:17:08

RE: Towing & Tranny Heat
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You are towing in overdrive I assume. I believe your owners manual advises against towing using overdrive. Most of us do anyway. I don't think I would tow a trailer in the mountains using overdrive.

Wayne Van Metre
'99 CC SLT 5.2/auto/3.90 anti spin

Dan Gruber
GenIII
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5/09/2001
12:26:21

RE: Towing & Tranny Heat
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Wayne is right...stay out of overdrive and you shouldn't have any problems. By staying out of overdrive, you're doing a few things:
1. preventing all of the 3-4 and 4-3 shifting that would otherwise happen. Remember, when your torque converter is unlocked (as happens during shifts or moderate throttle applications in OD), you are generating heat in your transmission.
2. keeping coolant in the engine flowing. My dodge service manual states that when an engine is in danger of overheating, the engine should be revved to help circulate coolant faster (except with the 2.5).
3. not lugging the engine, which can cause damage to your crank bearings.

Also remember...if your tranny cooler is hot, that's not necessarily a bad thing. It is designed to dissipate heat, and when you're moving, it is doing just that. When you're sitting still, it takes much longer for the heat to dissipate, which would explain why it burns your hand.

Dan
2000 CC/SLTplus/4X4/4.7/auto/3.55LSD
Gibson cat-back/Airaid

Mike01
Unregistered


5/09/2001
22:24:49

RE: Towing & Tranny Heat
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Thanks for the response but I DONT TOW IN OVERDRIVE. Before i had this truck I had a 99 Ram 4x4 Diesel, which could drag my house around like a rag doll. I towed in overdrive in that truck but it had a 4.10 rear end in it. I can only assume that DC put that specific tranny cooler on to match my Quad Cab. I wonder if i put a bigger tranny cooler if my warranty would be voided? Does anyone know how to put on a tranny temp gauge?? Hum, I also wonder just how HEAVY DUTY is this package anyway.
Mike




Dave R.
Unregistered


5/10/2001
01:02:53

RE: Towing & Tranny Heat
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There is a Mopar temp guage available.



Frank Likert
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5/10/2001
15:49:00

RE: Towing & Tranny Heat
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I have the same setup but '00 2wd (QC 4.7/auto/3.55/HD Service Group). Hope I dont see the same type probs, cause I got it to be able to tow around my mustang occasionally (car+trailer~4500#s). I was waiting for the vent to be fixed tomorrow before I tried to tow with it. I was not going to tow in OD. Mostly flat areas around here though. I would appreciate any info I would need in this case.
Tks
Frank Likert



Mike01
Unregistered


5/10/2001
22:52:27

RE: Towing & Tranny Heat
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What i dont get is where DC put the tranny cooler, mostly behind the bumper. Come on now DC what are you thinking. My Diesel's tranny cooler was HUGE!!!!! My truck sits in the driveway almost all week and just towing on the weekends. Maybe i should think about synthetic lube in the tranny, has anyone done this?? How hard is it? Mike



SharpV6
GenII
 User Profile

5/11/2001
00:31:14

RE: Towing & Tranny Heat
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Don't use synthetic unless you get Royal Purple.
I think this is the only synthetic that will work in our Mopar Transmissions, not even Mobil 1 ATF is recommended.

93 CC 4X4 V6 AUTO

   P 1


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