It means that it has at least one gear where the output shaft rotates at a higher rate than the input shaft. So, if you have a transmission with a .70 overdrive ratio, it means the transmission output shaft makes one full rotation for ever 7/10ths of a rotation from the input shaft.
Shifts the transmission in/out of overdrive Shifts the transmission in/out of overdrive
If the problem with the transmission is overdrive related it may.
On the 1992 Buick Roadmaster, the overdrive feature is controlled by the transmission, specifically the 4L60E automatic transmission. There is no separate overdrive switch; instead, the overdrive engages automatically when the vehicle is in Drive (D) and the transmission reaches a certain speed. To disable overdrive, you can shift the transmission into the "3" position, which prevents it from shifting into overdrive.
what would transmission not to shift in to overdrive
No. Three speeds are normally without overdrive. There may be another transmission that you could replace it with to get overdrive.
That truck came factory with a 700R4 transmission. And that has overdrive in it already.
inside of transmission
The 1996 Ford Explorer overdrive sensor can be found on the right hand side of the transmission. The overdrive sensor will be near the front of the transmission.
An overdrive transmission allows for less engine speed and thus greater engine economy. When in overdrive the transmission has a gear drive of less than then the engines speed. In the General Motors 4L60E Hydramatic transmission for example, in overdrive gear (4th) the transmission has a ratio of . 70. This means for each 1 rotation of the crankshaft, the output shaft of the transmission rotates . 7.
The transmission for the 1996 Chevy 3500 could be jumping from overdrive for several reasons. The transmission could have a vacuum or electrical problem causing it to come out of overdrive. Or, there could be an internal valve problem causing this to happen.
Your transmission might automatically shift out of overdrive while driving on the interstate because of low transmission fluid. This issue might also occur because of a bad transmission sensor or overdrive sensor.
the overdrive sencer