My '97 is within 1 mph of correct. But then I calibrated the speedo
needle......
Paul
On 8/9/2006 12:22:22 PM, Ron Porter (ronporter@ameritech.net) wrote:
> All three of my MTX SHOs would underread by 3%. It took me a few years,
> and
> a few 81-in-a-65 (when I thought I was doing 79) speeding tickets in my
> '89
> before I figured it out.
>
> Ron Porter
>
>
> -----Original Message-----
> From: shotimes-admin@autox.team.net [mailto:shotimes-admin@autox.team.net]
> On Behalf Of van Oss
> Sent: Wednesday, August 09, 2006 12:25 PM
> To: shotimes@autox.team.net
> Subject: [Shotimes] Speedo Error... was: My MPG Test is Working!!
>
> It sounds as though speedo inaccuracy is the helpful factor in your
> experiment, George. In a sense you've
> corrected an error in the car. That
> by itself would be a postive step.
>
> I've confirmed several times in my 92 SHO that the speedo UNDERstates
actual
>
> speed by exactly 2 MPH. I've
> noticed the speedo on our Crown Vic OVERstates
>
> actual speed a lot. The last time my wife followed me on the Interstate,
>
> she in the Vic and I in the SHO, she really gave me the dickens, thinking
>
> we'd been doing 85 MPH in a 70. We'd been doing exactly 75 -- I'd
confirmed
>
> that using the stopwatch function in the dash clock, 10 miles in 8:00
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