Speedometer is off

[LookAtThatSHO]

Got a ticket in my 95 for doing 80, but my cruise was set to 75. I had someone follow behind me and indeed the speedometer is off by 5mph at those speeds. I realized my SHO just turned 11 yers old, but what can cause this to happen? After looking around on the net, I've come across a Speed Sensor. Could this be the culprit? If so, would this be an easy fix?

 

[Ishodu]

It wont be the speed sensor. Its more than likely the head. It can be adjusted, I have done mine its very fine work you must be carefully. www.shotimes.com has a procedure for doing it that SHONUT wrote up. Finding a GPS will make the job a million times easier too.

 

[qiksho]

You could also have taller tires than came on the car stock. I believe one tire size bigger would yield a 5mph speed difference at those speeds.


A search on this subject might yield you alot of information