I need an idea. The truck does not have a cable, this is an electronic speedo.
Thanks.
Tires are correct size, analyzer says 66 truck speedo says 60 gps says 66
so I know speedo needs something?
Pilsner Man
Favorite Answer
The speedometer head must be bad.
CB
How much is it off - my F150 speedo is 3+ miles per hours faster than GPS speed at 60mph. I consider that close enough. The tires are stock and well worn so I suspect new tires will reduce the error somewhat. Most of my motorcycle (past and current) have been 10% + off - again speedo faster than gps.
wg0z
Check tire size if the error is only slight.
G. Whilikers
Is the truck still wearing the same size tires it came with?
Two Smoking Guns
Aye, but how do I fix it?