Speedometer / Trip milage ?
Thread Starter
Race Director
Joined: Jan 2007
Posts: 10,647
Likes: 695
From: Danville Illinois
2025 Corvette of the Year Finalist - Modified
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2021 C3 of the Year Finalist - Modified
2019 C3 of Year Finalist (appearance mods)
Speedometer / Trip milage ?
On my 75 the speedometer does not show the correct speed as compared to my Garmin.
But, the trip odometer does show the correct mileage.
Just using the mile markers the trip is correct, but the speed in off.
What am i missing?
But, the trip odometer does show the correct mileage.
Just using the mile markers the trip is correct, but the speed in off.
What am i missing?
Burning Brakes
Joined: Aug 2011
Posts: 828
Likes: 286
I have the same problem. The speedo works on a magnetic principle and over time the magnets get weak and cause inaccuracy. While the odometer is mechanically controlled. Best way would be to send it off to be calibrated, or add tiny magnets slowly til you get it right.
