dustiduI have an 86 with the 4/3. Overdrive stopped working. I changed the fluid, filter & relay - nothing. I ran 12 volts to the ALDL F terminal & the yellow OD light comes on. I have researched various forums & have read about ways to bypass the ECM, but they can be somewhat confusing. I read in one article that you can use a jumper wire on the second gear switch.Another talked about doing it at the ecm, still another said you could do it at the relay. Is there a place to get a replacement solenoid & pressure switch if needed ? Sorry about being so long winded. Any help would be appreciated as I'm totally frustrated.
russ1953jrodsI have the factory manual for such issues. More than likely the clutches are burnt. Does reverse work? Eckles just now listed rebuild kits $259.
The overdrive was designed in retro spec of the old chevy power glide trans, just put in a different case and added a soliniod.
A good trans shop can cross referance the parts and do the rebuild. hope you got lots of $.
