1991 Toyota Corolla Odometer Not Working
They probably forgot to connect the cable. There are two cables, one connects to the transmission, then connects to the cable that goes into the instrument panel. Both screw in. The end that connects to the IP twists 1/2 turn to lock.
It is most likely the lower one, it screws into a housing on the transmission.
It is possible thay dropped the transmission and pulled the cable out of the instrument panel.
Remove the air filter box to get better access.
If they did pull the cable out of the instrument panel, it is most likely broken (IP) and they should repair it.
I doubt you could buy a new IP, but you can find one from a junk yard.
Suggested Repair
Check that the speedometer cable was reconnected after the clutch job. There are two screw-in cables: the lower one threads into a housing on the transmission, and the upper one connects to the instrument panel with a half-turn lock. Remove the air filter box for access. If the cable was pulled out of the instrument panel, it may be broken and should be repaired; a used instrument panel from a salvage yard is a possible source.
Conversation Summary
After a clutch replacement on a 1991 Toyota Corolla, the speedometer and odometer stopped working. The owner asked whether the shop left the cable disconnected and where it attaches. The expert said the cable was likely left unconnected. One cable screws into the transmission and joins a second cable that locks into the instrument panel with a half turn. Access is improved by removing the air filter box. If the cable was pulled from the instrument panel, it is likely broken and should be repaired, possibly with a used panel from a salvage yard.
