The advent of ford aod transmissions. If im shifting manually not doing 1 d 1 shuffle i still do not get third.
Troubleshooting The Aode And 4r70w Transmission
Ford aod no 2 3 shift. Ive been working and looking into this issue for almost 4 days. Thinking that the direct clutch was burnt i planned. Transmission will not shift from 2nd to 3rd gear aod automatic. I checked the direct pressure during a road test and found the it was coming up when third gear should have engaged. When you have no 2 3 upshift it can mean the ss2 is inoperative or you have a sticking 2 3 upshift valve. Assuming the transmission shifts 1 2 and then stays in second gear without ever neutralling out the most likely cause would be a stuck 2 3 shift valve in the valve body.
If im shifting manually it will shift fine into second a little weirdly but rpms drop normally. The ford aod transmission was evident in cars like the mustangs fairmont and ltds around 1980 and 1993 and it was quite unique even though not in a really good way. When im in drive waiting for it to shift into third at about 25 30 miles an hour 3rd is non existent. In dod which is fully automatic the aod performs a 1 2 3 4 upshift as vehicle speed increases. The valve body kit is intended to modify a properly functioning transmission not to repair a problem. Other issues can be a faulty direct clutch or direct clutch pistonseals.
Clutch transmission differential axle transfer case aod no 2 3 shift hey guys i have a 90 e 150 van with an aod that lost the 2 3 shift. At 40 mph the aod is designed to shift into overdrive lockup on the smaller input shaft into the direct clutch. Transmission problem 1989 ford f250 four wheel drive manual 80000 miles i have got a 1989 ford f 250 73 liter diesal straigh drive. There are two types of throttle valve control systems used with the aod. Refer to aod valve body kit faq 1. For starters it uprooted the second gear in the shift pattern which left the latter dwindling in the gory land without remarkable performance.
If you get a harsh 2 3 upshift the problem is likely the 2 3 accumulator or excessive line pressure.
Gallery of Ford Aod No 2 3 Shift
