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Speedometer not working 850

posted by  benglar on  Tue Jan 29 19:17 CST 2002
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last visit: Mon Jul 5 09:23 CST 2010
[RELATED]

Wiring/connector problem. Check continuity with ohm meter.
Combined instrument (gauge cluster) fuse blown. Check/replace (on rear of gauge cluster).
Speedometer sensor failed. Sensor is on rear of differential.
Speedometer sensor out of adjustment. There is a clearance spec (!!!!) for gap between sensor and differential gear teeth. Shims available through dealer.

This is a low-voltage circuit (+/-0.5v sine wave), so it is sensitive to bad connections.
--
-- Bruce / '82 244 (298k miles!), '86 745, '87 760Ti, '94 854






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New Speedometer not working [850]
posted by  Mr-T  on Mon Jan 21 20:24 CST 2002 >


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