[DeTomaso] Speedometer
MikeLDrew at aol.com
MikeLDrew at aol.com
Wed Jun 16 03:02:58 EDT 2010
In a message dated 6/15/10 23 52 10, gudmundfroiland at yahoo.no writes:
> I have an annoying ticking sound in my speedometer. It is ticking more
> when driving slow, seems like it disappears with higher speed. Are there
> anyone that have any experience whit this?
>
It's very common--I have it too. It's caused by a worn-out speedometer
cable. The cable can be routed so that it makes a sharp bend right where it
enters the back of the gauge, and that causes the inside of the cable
housing to wear out. The ticking is caused by the fact that while the back end
of the cable (by the gearbox) is spinning a constant speed, at the gauge the
cable is stopping momentarily, winding up like a spring, then suddenly
popping and then stopping again, multiple times each second. It happens more
slowly when the car is moving slowly, so that the needle drops to zero
momentarily. At high speed the cable is spinning so fast that the condition is
hidden.
There's a small chance you could fix it by re-routing the cable and
lubricating it with graphite, but most likely, by the time it's as bad as you
describe it, the cable is wrecked and you just have to replace it.
I have a brand new cable for my car sitting six inches away from me; Bob
Benson won two of them at the POCA Reno Fun Rally raffle and was good enough
to donate one to me--thanks again Bob!!!
I forget how much they cost, but they're not terribly expensive.
Mike
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