Look on the drivers door post, find the label, in the box marked TR, does the letter T appear? If not it's not an AOD tranny.
June, 8, 2010 AT 5:45 PM
Yes there is a 'T'.
It shifts at 45, I am assuming that is the final gear. It is clunky sometimes but shifts. I wonder if the mpg is normal at 13? I lowered the tail gate and it got 13.5 mpg.
June, 12, 2010 AT 8:59 AM
Only thing to check is tune up specs, and possible band adjustment, it's a fairly cheap adjustment, any tranny shop can do. I don't know if 13.5 MPG is normal, I dont think older trucks did much better than that. Clunks can also be caused by worn u joints, and tailshaft bushings, and pinion bearings at the rear end.
May, 15, 2012 AT 9:08 PM
It is your rear end I have same truck with 3 on the tree 3.8 six and I get 27 in town 32 on hwy me gears are 2: 73 look at door sticker and look up code
May, 15, 2012 AT 9:09 PM
It is your rear end I have same truck with 3 on the tree 3.8 six and I get 27 in town 32 on hwy my gears are 2: 73 look at door sticker and look up code
July, 20, 2012 AT 4:08 PM
Was this issue ever resolved. Jongustafson, did you check the tuneup as directed by our expert? If not, you should. Fordsixguy also presents a good answer. If the gearing in the differential is too low, you'll have to wind the engine higher than it should need to and you'll get worse mileage.