Jim Grant's Tech Tips
Prizm, Shoe Poacher
Q: My speedometer cable on my '90 Geo Prizm pulls transmission
fluid up the cable and is leaking all over my feet! Could this be the
oil seal at the transmission connection or would it be the cable itself?
Please help!!! It has already ruined two pair of my shoes. Also, does
the speedometer cable attach to the differential?
speedometer cable is attached to the axle shaft just before it exits the
differential, but in your case itís also part of the transmission which
is called a transaxle assembly. The first thing I would suggest is checking
the transaxle fluid level for being too high. If it is, have the fluid
drained to the correct level. Also have the vent for the transaxle checked
for blockage. The heating and cooling that occurs to the oil in a transaxle
requires a vent. If the vent is plugged or restricted pressure can build
inside the transaxle as a vehicle operates. The added pressure can push
oil in all directions. Lastly, have you had any work performed on the
transaxle that would require disconnecting the speedometer cable? Itís
possible that a useless looking washer/oil slinger was discarded.