like the title says, my speedo is out by about 30 kmph, when I go under 30, nothing, then when I hit 30 it starts to speed up, and works fine from there on. no abs or break light or anything so no idea what it is, ive changed one speed sensor in the tranny (forward one) because ethere looked like there were two, and also changed the one ontop of the rear diff. if anyone has any other ideas please help me out, it is really pissing me off because who knows if the odo is working if the speed is off. thanks a lot!

 

Had a similar problem with gauges and lights in the dash going in and out.
My problem was a bad ground going to the dash. They are located under the kick panels and the drivers and passenger side if I remember correctly.

Could try it couldn't hurt and it would be a quick and cheap fix.

Hope this helps.

 

thanks for the idea! but its not all gagues or lights, just the speedo, after researching i realized the input, and output speed sensor are the same, but i only changed one because they both looked different, i am going to try and switch them and see if it works.

 

Do you have any codes?

Starting key off, turn key on (not start), off, on, off, leave on. The odometer window will display any codes. Not all set a check engine light.