1989 Bronco 5.8 the transmission shift points RPM too high
One of the first things I'd do is check the throttle valve cable that runs from your throttle linkage at side of throttle body, and goes from there down to transmission, and make sure it's moving free and releasing as well when off the gas . Take some penetrating spray like WD-40, and get it moving free, and make sure you look close at linkage where cable attaches at transmission, and spray it well, and get it moving good. Apply emergency brake, and block wheels to be safe, and watch what cable does, as you have someone push gas pedal down to floor slowly and then let up on it. That cable should pull a linkage one way when gas pedal pushed to floor, then return when pedal is let up. After they let it up, see if you can move linkage back any further by hand then it came back on its own, just to see if it's hanging up slightly, which would cause your later shift problem. Keep applying WD-40 and working it until your sure it's as free as it will get, then wipe WD-40 off as much as you can, and apply some "white lithium" spray grease or similar, to help protect it from seizing again. Once that cable and linkages are moving good and free, you will probably notice shifting problem is gone, or at least better, but if not, there are adjustment points on that cable if you look closely. If you do need to adjust, and can't figure it out, get back to us and we'll help. Good Luck.
Nov 29, 2009 |
1989 Ford Bronco