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Because like all the other guages, each work independently of one another, and show different happenings going on with the engine. The tach itself could be bad, or maybe disconnected from the ignition system. You will need to find someone to troubleshoot it, if you want it fixed. If not, don't worry about it.

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Q: Why would the rpm gauge not work when all the other electrical gauges are fine?
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How do you install air fuel ratio gauge?

Air fuel ratio gauges rely on a sensor that is very much like an O2 sensor used in a car's emmission system. Therefore you would have to have 'bung' drilled and welded into your cars exhaust system to mount the sensor for the air/fuel gauge. After that, run the wiring and mount the gauge like any other aftermarket gauge.


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Check the fuse.


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Why does thinner wire have a higher gauge number?

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Related questions

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Would it be correct to write My gas gauge read E?

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How do you install air fuel ratio gauge?

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What size circular barbell would you get if the length is 14 and gauge 1.6?

I have no idea what you mean!... Standard gauges are 18 (regular earrings), 16 (smallest gauge of body jewelry, generally), 14 (also very standard) and then 12 and lower is getting to be large gauge for stretching. "1.6 gauge" does not exist, since gauges come in increments of 2 (and 0 gauge is an inch thick and very few people have such stretched holes!) And 14 WHAT? Millimeters? And if you know how long the jewelry is, and the gauge, then what size is left for you to be asking about?


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