[Shotimes] ABS codes & sensor

[van Oss]

I am getting a steady ABS light in my 91.  I'm pretty sure it's the right
front sensor.  It got loose a while back and, until I caught it, was rubbing
against the water-pump pulley.  It may have got water inside the wire
housing, I wonder.

It's turning out to be a bear to get hold of a replacement sensor.  I
ordered from Rock Auto and got the wrong part, ordered via the local store
and got the same wrong part.  Something is wrong the system somewhere.

Can I take this car into a Ford dealer and ask them to read the ABS codes?
It'd be nice to get confirmation that the right front sensor is indeed the
issue.  Would a Ford dealer be willing to perform only a diagnostic service,
without the repair?

Joseph van Oss