[Corsa B 1993-2000] FIRST THREAD!!! Speedo issues

[Mibo]

ok i posted this on AC but i'm gonna throw it up on here as well

Basically it accurate till about 40 kph, then its off by about 5 until about 60kph the higher it goes the higher its off. At about 120kph its off by 10. I haven't touched the wheels its running um....165/70/13. I was thinking about just replacing the spedo but this might not solve the issue.

any idea's?
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[Iby]

Try looking into the gearbox speed sensor. Take it out and inspect it / replace with working one.


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[Taurus]

Most speedometers over-read by about 10%. So 10kph error at 120kph is within usual tolerances. Personally I wouldn't bother replacing the speedo. If you're worried just use a sat-nav to check speed.

(I am assuming it is over-reading rather than under-reading.)

[Sparky]

Most speedometers over-read by about 10%. So 10kph error at 120kph is within usual tolerances. Personally I wouldn't bother replacing the speedo. If you're worried just use a sat-nav to check speed.

(I am assuming it is over-reading rather than under-reading.)

This is correct. Alternatively, you could change the size of your wheels and put the appropriate* size tyre on, as tyres affect your speedometer reading.

*A tyre calculator can be found online, which will tell you which size is needed.

[Mibo]

Well I'm not gonna spend money on it that's for sure. It really isn't that bad since I know it's off. Was kinda just wondering. Ill check out the sensor

[Dave]

If it's anything like the fuel gauges in corsas then I'm not surprised it's inaccurate

[AJ]

Damn you for getting here first Mibo