Speedometer issue, WTF?

[tedhodges]

Hi Guys,

As you may know, I just got a new '87 LXi sedan. Weirdest issue I am having right now is that no matter what my speed is, it reads 10 MPH faster than I am really going (GPS speedometer in my iPhone is correct, I've tried it in my two other cars and they are dead on). What would cause this? What is the fix?

[nfs480]

Do you have stock size tires and rims?

[tedhodges]

Rims, yes they are stock. Tires I don't know about, what size tires were the stock ones?

[nfs480]

It should say on the door jam sticker where the tire pressures are also stated.

[dacantu]

what gps app are you using? i think i have a similar problem with my coupe and would like to confirm.

[A18A]

if its reading 10mph faster all the time, you could take the cover off the gauges, and turn the speedometer needle back 10mph and put it back together

[MessyHonda]

whats the apps name...i want to test mine with my iphone too

[stevo89]

look at your gauges and make sure the seedo is set to exactly 0 not 10. if it is at zero set it below 10

i had the same problem. easy fix

[sam o nela]

Hey Ted! Congrats again on that 3G

I would also concur with the idea to just "turn" the needle back a little...we were able to do this on my uncle's old Prelude with no ill effects...