Speedo only working 30% of time
Thread Starter
Junior Member
Joined: Aug 2003
Posts: 20
Likes: 0
From: Ontario, Canada
Car: 91 Z28 All Original
Engine: LB9
Transmission: 700R4
Speedo only working 30% of time
My speedo only works some of the time as my thread subjecct states. It's not a huge deal but my Z28 is mint (65k) never winter driven and I would like everything to work. The speedo works for a while then stops then goes on intermittenly. Reminds me of a bad wire connection. Anyone had or seen this?
Thread Starter
Junior Member
Joined: Aug 2003
Posts: 20
Likes: 0
From: Ontario, Canada
Car: 91 Z28 All Original
Engine: LB9
Transmission: 700R4
Since it is a 1991 Z28 I assume it is all electronic. When the speedo doesn't work, the odometer also doesn't count up.
Supreme Member
Joined: Sep 2003
Posts: 1,209
Likes: 0
From: Wahiawa, Hawai'i
Car: 1989 TTA
Engine: LC2
Transmission: Worn-out 200R4
Axle/Gears: BW 9-bolt, 3.27's
Yup, the odometer is driven by the speedo. If the speedometer doesn't work, the odometer won't either, naturally. Keeps the miles off your car though... 
Crack open the dash and see if any of the cables are either loose or corroded.
Crack open the dash and see if any of the cables are either loose or corroded. 
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beachrodder
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Aug 7, 2015 04:27 PM