speedometer reading too high 1992RS
04-17-2012, 03:09 PM
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speedometer reading too high 1992RS
I just bought this car so I dont know the history Speedometer reads maybe 10 MPH too High, looking at the board I see fixes for this problem by changing the gears for the sensor in the tailshaft and I see a fix by programming, which is the way to go. I feel maybe the tranny has been changed in the past but I dont know for sure. I also dont think this problem is linear that is the faster you go the more wrong the speedometer is off.
05-10-2012, 01:19 PM
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Car: 1991 Z28
Engine: 355 TPI
Transmission: 700r4
Axle/Gears: 9 bolt disc / 3:27
Re: speedometer reading too high 1992RS
Have your local tyranny shop do a free inspection and tell you your rear gear ratio. Compare that yo your original ratio. Also have the see if the tyranny is original or not. I would myself prefer to change the gear in the transmission in conjunction with tires to correct the problem.
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