Towing and overdrive
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Towing and overdrive
I have a 99 F250 super duty 7.3L PSD auto.
I am wondering when I should and shouldn't use overdrive while towing and why?
Basically I tow either a 16" flatbed with one car (car differs each time)
sometimes I tow it empty
I also tow a dolly with a car or an empty dolly
I am wondering when I should and shouldn't use overdrive while towing and why?
Basically I tow either a 16" flatbed with one car (car differs each time)
sometimes I tow it empty
I also tow a dolly with a car or an empty dolly
Sit. Stay.
Joined: Oct 2001
Posts: 18,308
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From: Washington State
If your tranny continually shifts in and out of OD you should lock out OD.
If it doesn't "hunt" as described above, just leave it be.
Shift = heat.
Excessive shifting = excessive heat.
Excessive heat = burnt up tranny.
Burnt up tranny = big $$.
If it doesn't "hunt" as described above, just leave it be.
Shift = heat.
Excessive shifting = excessive heat.
Excessive heat = burnt up tranny.
Burnt up tranny = big $$.
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So basically the reason people say not to use overdrive is because if overdrive is set to automatically engage then it can engage on and off too often. I live in Iowa so there aren't an excessive amount of hills. I was towing a dolly with a little subaru on it last week and I decided to not lock out overdrive. It only kicked into overdrive twice on a 20 mile trip.
so does having a load cause the truck to want to shift on/off from overdrive more often?
am i fine using overdrive as long as its not shifting all the time?
so does having a load cause the truck to want to shift on/off from overdrive more often?
am i fine using overdrive as long as its not shifting all the time?
Sit. Stay.
Joined: Oct 2001
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From: Washington State
Originally Posted by VR666
So basically the reason people say not to use overdrive is because if overdrive is set to automatically engage then it can engage on and off too often.
Originally Posted by VR6666666
I was towing a dolly with a little subaru on it last week and I decided to not lock out overdrive. It only kicked into overdrive twice on a 20 mile trip.
Originally Posted by VR666
so does having a load cause the truck to want to shift on/off from overdrive more often?
am i fine using overdrive as long as its not shifting all the time?
Last edited by Monsta; Nov 12, 2005 at 11:57 AM.
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Originally Posted by VR666
So basically the reason people say not to use overdrive is because if overdrive is set to automatically engage then it can engage on and off too often. I live in Iowa so there aren't an excessive amount of hills. I was towing a dolly with a little subaru on it last week and I decided to not lock out overdrive. It only kicked into overdrive twice on a 20 mile trip.
so does having a load cause the truck to want to shift on/off from overdrive more often?
am i fine using overdrive as long as its not shifting all the time?
so does having a load cause the truck to want to shift on/off from overdrive more often?
am i fine using overdrive as long as its not shifting all the time?
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Shifting isn't the problem. Drive in the tallest gear that the torque converter will stay locked. The torque converter is the major heat generator in a transmission. When the torque converter is unlocking and locking continually you are creating heat and wear.
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Originally Posted by rclarke
Shifting isn't the problem. Drive in the tallest gear that the torque converter will stay locked. The torque converter is the major heat generator in a transmission. When the torque converter is unlocking and locking continually you are creating heat and wear.
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schweg2
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Feb 10, 2005 08:05 PM
