transmission loading
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Joined: Mar 2013
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transmission loading
hi all.i have a noobie question im sure has been addressed before. my rig is a 2001 f350 2wh drive. 7.3 eng. i bought the truck at 134000 mi.not long after the purchase i started feeling the tranny was not quite right. now at 142000 mi the tranny took a dump. i had a ford reconditioned unit installed @ a total price of 3500.00 including a new external cooler per ford instructions. i haul an 11ft. camper weighing about 4500 lbs. never having owned an automatic before i want to use it properly.while hauling the camper can i just put it in drive and forget it or do i not use the overdrive at all or kick it out of overdrive when approaching a steep grade. my owners manual do not address this at all.any advice will be appreciated . thanks pat. ps i hope this is in the proper area and formst.
Cargo Master
Joined: Feb 2005
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At 4500 lbs, I can't imagine you would ever really need to take it out of OD. But what is generally recommended is to run it like normal unless the transmission is hunting for a gear between 3rd and OD while climbing hills. Then you should turn the OD off and just run in 3rd until you're back on level ground. Again, I don't think this is going to be a big issue with the weight you're towing unless we're talking about some really steep hills.
Lead Driver
Joined: Jun 2007
Posts: 7,760
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From: Hampton, Maryland.
Typically, 4500lbs should not require taking it out of OD. The big thing is getting an exhaust gas temp gauge and a tranny temp gauge to be sure. If you are running extended at a decent grade with a stock exhaust, you could potentially build up exhaust temps that could cause issues. I would at LEAST put a real tranny temp gauge on it.
Cargo Master
Joined: Apr 2010
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I've pulled a 16ft dovetail flatbed with a small car (Grand Am, etc.) on it multiple times. I never ran across the scales, but my guess would be somewhere around 5-6k in weight. Truck ran like there was nothing back there. OD stayed on. No problems.
With the 9k 5th wheel, I only turn OD off on long or steep grades. Flat running at highway speed in OD is no problem.
With the 9k 5th wheel, I only turn OD off on long or steep grades. Flat running at highway speed in OD is no problem.
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