VEMS Community Forum

Technical => Wiring & Sensors => Topic started by: Mark0 on March 25, 2015, 08:14:44 pm

Title: Tachometer signal
Post by: Mark0 on March 25, 2015, 08:14:44 pm

Right now using AutoGauge aftermarket tachometer which works and shows current engine RPM. But in other hand, on car cluster it doesn't work.

Using P259 channel 0 divider 16
Maybe 1k ohm 1/4 watt pull up resistor would help

Title: Re: Tachometer signal
Post by: MWfire on March 25, 2015, 11:26:36 pm

Old car?
Some old cluster needs more than 50V to trigger. That you can solve with
https://shop.vems.hu/catalog/inductor-p-102.html

Title: Re: Tachometer signal
Post by: Mark0 on March 26, 2015, 10:15:02 am

Mhmm, not old. Audi S4 2001 bi-turbo

Title: Re: Tachometer signal
Post by: MWfire on March 27, 2015, 02:40:06 pm

Then it should works if that car hasn't signal from canbus.

Title: Re: Tachometer signal
Post by: astit on May 22, 2015, 12:33:57 pm

I'm using too an aftermarket tachometer on an A4 2002 and works like a charm. I can't figure out why it's not working a yours.

Title: Re: Tachometer signal
Post by: Mark0 on June 01, 2015, 04:34:35 pm

Aftermarket one works fine, but on cluster not. And yes, RPM signal via canbus.

Title: Re: Tachometer signal
Post by: Kamuto on June 02, 2015, 12:37:51 am

Quote from: Mark0 on June 01, 2015, 04:34:35 pm

Aftermarket one works fine, but on cluster not. And yes, RPM signal via canbus.

so that means it wont work :)