Impreza sportswagon speedometer

[MReading]

My Impreza sport - 1997 - has a mad speedometer - there is a really weird
whizzing noise from the dash and its goes up to 140mph and then goes back to
normal again for a little while before doing it again.

Its booked into a garage in 2 weeks time - but I would like to know if anyone
else has had this - cost of parts ? and is there available a Haynes manual type
diagram for the dash console so I can try and look myself?

Im from London - UK - by the way..

Martin

 

[Remco]

I've seen this on a car I had years ago and it was the speedo cable. It
is a mechanical cable that can do what you describe if it runs out of
lubrication.
I disconnected it, sprayed some WD40 in the connection and allowed it
to soak. It was fine for years after that.

Not sure what type of speedo arrangement a 97 impreza has, but if is is
not electronic, it is probably a similar arrangement. A decent repair
manual should be able to tell you how to re-lubricate it.

Remco

 

[Edward Hayes]

Probably a intermittent electrical connection so first check any
grounding points. Eddie

 

[Remco]

A 97 has an electronic arrangement, then? If so, forget what I
mentioned about relubing.