1978 Chevy Impala Speedometer not working

NEAL396

MEMBER
1978 CHEVROLET IMPALA
V8
2WD
AUTOMATIC
500,050 MILES

My speedo isnt working. The gas guage didnt work either so I replaced the speedo unit and now everything works except for the speedometer. The speed cable isnt broke. What could be the problem?

Thursday, December 20th, 2007 AT 8:47 PM

1 Reply

BUDDYCRAIGG

MECHANIC
2,262 POSTS

Could be the plastic gear in the tranny.

Unhook the cable at the tranny and use a drill to spin it.
Have a friend watch the speedo.

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