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Tachometer Behaves bad

Verfasst: 10. Sep 2019, 20:25
von ronenfe
Does anybody know why my tach started to behave like that when I'm reaching high speed? it then stays like that or completely blank when I slow down.
https://www.youtube.com/watch?v=4ByfxKH ... pg5vr6HxgI

Re: Tachometer Behaves bad

Verfasst: 11. Sep 2019, 07:01
von takoda
Were you really running on low fuel or was your fuel meter misbehaving, too?

I would assume it's either a loose cable connection or broken cable somewhere, or your entire unit is faulty... When did this behaviour start? Did you do any repairs/disassembling prior to it? Is it only at high speeds (if so, at which speed approximately does it start) or also at high rpm in lower gear?

Re: Tachometer Behaves bad

Verfasst: 11. Sep 2019, 08:08
von ronenfe
Thanks, I think I found the cause of the problem but I need to investigate more.

The fuel was really low, it's not related, the gauge works fine.
I think the problem is that I overloaded the bike with too much accessories and the fog lights I have draw too much current, I connected all accessories to the Ignition fuse.
It seemed to happen also on High RPM, not only High speed.

Re: Tachometer Behaves bad

Verfasst: 12. Sep 2019, 20:52
von ronenfe
I disconnected the fog lights and connected the camera, temp and voltage gauge and usb charger to the tail fuse, but problem still remains. When I use high RPM it goes crazy.

Re: Tachometer Behaves bad

Verfasst: 12. Sep 2019, 21:23
von takoda
Did you check all the cable connections in the wiring harness?

Re: Tachometer Behaves bad

Verfasst: 12. Sep 2019, 23:30
von ronenfe
No. But it's strange that it works fine when I disconnect my accessories. Maybe I have a current leak somewhere because of them which affect the tacho. I will check.

Re: Tachometer Behaves bad

Verfasst: 15. Sep 2019, 22:41
von ronenfe
Looks like it still has the problem even without accessories. So I guess it is a bad connection to the ECU.