Mazda MX5 - speedo occasionally drops to zero - it has a LCD mileometer. Not sure if speedo is electronic or mechanical. Any suggestions (car not with me - it is my daughter's)
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16 years ago
Intermittent Speedo
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- posted
16 years ago
I've had similar on Citroens. They have a sensor on the gearbox which sends pulses up a cable to the speedo somehow. The sensor has I believe a plastic gear which engages in the box. Sometimes the gear can wear or the cable/connections become intermittent. But you probably knew that already.
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- posted
16 years ago
No - but I once had a problem with a Rover 214 - the spiral gear in the gearbox was loose on the shaft.
Any more ideas? If it is electronic, why would it need a gear?
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16 years ago
trouble at t'mill, skew gear's loose on't treadle.
the senders do fail, not the gear
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16 years ago
The gear meshes with the gearbox and rotates to generate pulses which are read by the speedo.
-- Malc
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16 years ago
This also happened to my Fiat Croma, never happened for my 15 y old Saab 9000.