What makes an AOD transmission shift?
The AOD is a true hydromechanical 4-speed automatic transmission controlled by a manual shifter and throttle valve (TV) cable. They also have a throttle-controlled kickdown linkage, which works with the vacuum modulator to control shift-points mostly for wide-open throttle (WOT) downshift.
How does a throttle valve cable work?
The throttle valve cable’s function is to transfer the movements of the throttle at the carburetor to the throttle valve plunger in the valve body. This allows throttle valve pressure and line pressure to increase according to throttle opening for gear upshifting. It also controls when the transmission downshifts.
How do I know if my transmission is AOD?
The AOD transmission can be identified in several ways. Its prominent 14-bolt pan is probably the easiest way. The pan is basically square but the back two corners are tucked in a little tighter than the front corners making the pan look like home plate with the front point cut off.
How much horsepower can a AOD transmission handle?
This unusual system can accommodate up to 450 hp or so before pieces start snapping. A sturdier single-shaft arrangement keeps the converter from locking up in Third and Fourth gears, and this alone makes a worked AOD effective into the 600hp range.
How do I adjust my Ford AOD?
How to adjust the different styles of FORD AOD TV controls
- Lift tab up to unlock adjustment assembly.
- Have someone floorboard the accelerator pedal from inside the vehicle.
- While the throttle is floorboarded, lock the tab on TV adjuster.
- Mark the adjustment assembly.
Does an AOD transmission have a vacuum modulator?
The AOD is a true hydromechanical 4-speed automatic transmission controlled by a manual shifter and throttle valve (TV) cable. There is no vacuum modulator or kickdown linkage with the AOD as we see with the older C3, C4, C6, and FMX transmissions; only the lone TV cable.
Why is my AOD transmission not shifting out of first gear?
If the governor is sticking it will cause a delayed, or no upshift, depending on how bad the condition causing the sticking is. If the 1-2 shift valve is stuck, and will not stroke, the transmission will not shift out of first gear. To top I just put an 85 AOD transmission in a 1995 F150.
Why is my F-150 transmission shifting too hard?
F-150/F-250: Why is My Transmission Shifting Too Hard? A transmission that is shifting too hard generally has a problem with its fluid pressure. When that pressure is too high, shift can happen erratically and forcefully. This article applies to… Modern transmissions shift so softly and smoothly that we often forget they are even working.
Why does my Ford F-150 only go in reverse?
My Ford F-150 automatic will only go in reverse and not forward. If I give it a little gas it will go forward about 4-5 ft. Is it my transmission? Show More Show Less
Why does my Ford truck not shift gears?
If your truck has trouble shifting into other gears, or other shift lever weirdness, it might need some adjustment. The Transmission Range Sensor might be damaged. If it is, your truck should give you a check engine light. Replace it if necessary.