Topic: 89 Ford Mustang Transmission Shifting Problem?

[anrace]

bought this car, it's a 2.3 four cyl. automatic. changed fluid ,filter and modulator . when engine is cool, first thing in the morning, it shifts pretty good, but as the engine warms up i have to lift my foot of the gas pedal to get it to shift into the next gear. what else should i do?

[airwaves]

You never should have replaced the transmission fluid in this old of a car. I dont know why, but that usually destroys the tranny if the fluid was not replaced on a regular basis.I have personally seen this happen to about 4 or 5 five people I know. If the tranny works fine in an older car, never replace the fluid.

[Soaring]

You need to tighten the bands.  Just changing the fluid on that transmission will not make it go south, but it will indidate that other maintenance needs to take place.