No overdrive
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No overdrive
I have a 2007 f550 6.0 powerstroke that will not go into overdrive when I hit the tow haul button the light comes on but it does not shift down and when I hit the tow haul button again the light goes off and has no change I'm running about 3,000 RPMs at 70 miles an hour on the interstate can someone help me out with what might be the problem with this please
Fleet Mechanic
Joined: Oct 2017
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From: Southwest Ohio
I never knew that the tow/haul button activated an overdrive gear. I was under the impression it changed the shift points. That would be why you aren't seeing any RPM change when you are toggling on/off at 70 mph
-- Dave
-- Dave
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Frmr Ford Trans Engr
Joined: Aug 1999
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From: SE Florida
The first thing to do is to read the codes. You can read them with Forscan, or take it to a good independent shop, or a Ford dealer.
How many shifts do you feel from a standing start up to at least 55 MPH? Tow/haul doesn't turn overdrive on or off, it just changes when it shifts.
How many shifts do you feel from a standing start up to at least 55 MPH? Tow/haul doesn't turn overdrive on or off, it just changes when it shifts.
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The first thing to do is to read the codes. You can read them with Forscan, or take it to a good independent shop, or a Ford dealer.
How many shifts do you feel from a standing start up to at least 55 MPH? Tow/haul doesn't turn overdrive on or off, it just changes when it shifts.
How many shifts do you feel from a standing start up to at least 55 MPH? Tow/haul doesn't turn overdrive on or off, it just changes when it shifts.
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I don't know what rear end gears it has in it ... It is a tow truck that my wife bought ...it just seems to high RPMs for that speed
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Frmr Ford Trans Engr
Joined: Aug 1999
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From: SE Florida
That does show one is missing. It should shift 1-2, 203, 3-4, lock the torque converter, and then shift 4-5.
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