Within my limited VW ownership experience I've had two speedo's making loud 'squawking' / 'screeching' noises. The problem was caused in both cases by a lack of lubrication of the input shaft (the bit the cable engages with).
With one speedo, it would be quiet up to 60mph then start screeching. It progressively began happening at lower and lower speeds until the cable snapped. The dashboard played the part of a big resonator and I thought it was a faulty wheel bearing to begin with.
Repairing is mostly a simple case of stripping/cleaning/lubricating/re-assembling. I did have one speedo where the shaft had picked up a little metal from the sleeve and needed a light sanding with emery paper. The tricky bit is getting the chrome ring eased away from the body of the speedo without damaging it.
Try turning the speedo input shaft with a matchstick. It should barely take any effort to turn it.
But yeah, I'd swap the cable to start with because that's a lot easier!
Edited by user
14 years ago
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Reason: Not specified
Andrew
195x Deluxe oval Beetle
Binz Doublecab