Auto Trans Shifting Problems

87stang92sho said:

So how could i do this myself? I honestly don't think the car would be able to get there because it stays in 2nd and on hills the car revs high but slows down a lot

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mikestang63 said:

check to see if the throttle valve cable that controls the AOD shifting is still connected at the throttle body. They are held in place with a plastic bushing that often breaks, and the cable then hangs. You can easily fry an AOD in a short time with the cable disconnected Even if it is still there I would recommend replacing it with a brass/metal bushing and cotter pin

The other thing to check is

fluid level- if too low it will not shift properly
TV cable adjustment- if not properly adjusted it will not shift properly. If the line pressure is too low, it will have delayed shifts and you can fry the trans. If too tight it will cause the trans to shift to soon.

I strongly suggest having a transmission shop adjust the TV cable unless you have experience doing so, as the proper way is to hook up a line pressure gauge and adjust it to achieve proper pressure. A way to ballpark it is contained in the following video, it will get you to the shop

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