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Originally Posted by enrique
I have had my 01 Tundra Limited for about a month now. Looks like this weekend will be my first chance to tow with it. i have never towed before and since I got the truck used I have no info(owner's manual) on towing with it. I need some help to say the least. I will be towing on a flat bed from uhall. Towing a newer model camaro up and a second gen rx7 back. Trip will be from San Diego to Milipitas and back. Any help on what gear to tow in and in what situations. I guess I need to tow with overdrive off but that was about all the info I could find. thanks for the help.
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Your trailer with a car on board will likely be in the 5000 lb range (give or take about 500 lbs). This weight is toward the upper end of the Tundra's real towing capability but there is margin left. Since this trailer won't have an form of weight distributing hitch, you will be putting a lot of weight on the truck's rear axle so don't try to carrry more than a few hundred pounds in the bed.
WRT to the transmission, your goal is to minimize the amount of time that the transmission torque converter clutch is unlocked because a lot of heat is generated from TC slippage with an unlocked TC clutch...and heat is what ruins an automatic transmission. Your trailer with car aboard is definitely heavy enought that the TC clutch will be mostly running unlocked if you let it upshift to OD. The weight is also high enough to be seriously stressing the front planetary gears if OD is used...and the front planetaries were a weak element in the '01 transmission. Turning OD off allows the TC clutch to lock in direct drive (3rd gear) so there's less heat and more torque to the rear wheels...and the front planetary gears aren't being used. Unless you need to stop the transmission from hunting on long grades, don't put it in 2nd gear.
I expect the UHaul trailer will have some form of surge brakes so braking shouldn't be much of an issue. However, if the trailer doesn't have some form of brakes, then you definitely want to have the TSB done on the truck brakes and you'll need to be very careful about using the brakes heavily.
Be careful how you position the car in the trailer (if you have some fore-aft positioning flexibilty)...your goal is to have about 15% of the trailer's total weight sitting on the hitch. Having a trailer that's too front heavy puts too much load on the truck (and may exceed the hitch rating); one's that's too rear heavy can lead to a very unstable towing situation and the possibility of uncontrolled trailer fishtailing/sway. If possible get the loaded trailer onto a scale to actually measure how much weight is on the hitch.
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Ray
Natural White '03 Access Cab V8 SR5 4X4 with TRD Off Road Suspension, Limited Slip Differential, and Towing Package
Towing & Performance Mods: JBA Headers, Gibson Muffler, 4.30 gears, Michelin LTX M/S Tires, Hellwig Anti-Roll bar, Prodigy Trailer Brake Controller, Autometer Z-Series Transmission Temperature Gauge, Magnefine Transmission Filter
Utility & Misc Mods: Genuine Toyota OEM Step (Nerf) bars, Peragon Tonneau Cover, TracRac Rack and Rail System, Muth Signal Mirrors, Pop&Lock tailgate lock, TruSpeed speedometer calibrator, "$20" RS-3200 Upgrade, Auto-Dimming mirror w/ Temp and Compass, Clear/Red/Clear Taillights with Silverstar Signal bulbs, 3M Clear Bra
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