Crazy NC21 Tachometer
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Please can you post items for sale or wanted in the correct For Sale section. Items / bikes for sale here will be removed without warning. Reasons for this are in the FAQ. Thanks
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- Settled in member
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- Posts: 47
- Joined: Mon Oct 16, 2017 3:58 pm
- Bike owned: NC21, NC24, NC30, VFR800, MC19
- Location: Georgia, USA
Crazy NC21 Tachometer
The tachometer needle on my NC21 is moving around erratically. It used to work fine, but recently changed. The engine is running fine. Any suggestions for troubleshooting? We did check the cable and everything seems tight.
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- Senior Member
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- Joined: Mon Sep 20, 2010 11:55 pm
- Bike owned: VFR400
- Location: Blue Mountain NSW Australia
Re: Crazy NC21 Tachometer
Tacho faulty, test with known functional unit, ignition unit faulty, test with known functional unit or loom/connector fault, inspect connectors and check continuity of loom. Any other approach requires testing requiring specialized equipment.
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Re: Crazy NC21 Tachometer
My tacho played up, reading two or three times actual engine speed, then stopped working. I traced the fault to a bad earth connection on the back of the instrument. That was for an NC30, no idea if a 21 is the same, but thought it worth mentioning.
John
John
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- Settled in member
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- Posts: 47
- Joined: Mon Oct 16, 2017 3:58 pm
- Bike owned: NC21, NC24, NC30, VFR800, MC19
- Location: Georgia, USA
Re: Crazy NC21 Tachometer
We finally got around to working on this. We took the front fairing off and disconnected all the related wiring connections. We used a bit of sandpaper where it fit, some electrical cleaner and grease, then reassembled and the problem seems to be gone!