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Old 06-19-2012, 10:18 AM   #1
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Default Tacho connection on NA with NB engine

Hey everybody,
I just installed new engine to my NA from NB 1.8 103kw. Everything now runs fine, just don't know where i can get tacho signal to my old speedometer console. Maybe somebody can suggest what to do?
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Old 06-19-2012, 10:26 AM   #2
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are you still using the stock coils?
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Old 06-19-2012, 10:36 AM   #3
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no, everything on engine are new from NB.
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Old 06-19-2012, 10:44 AM   #4
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the NB coils don't have the ability to send out a tach singal like the early NA coils. I'm assuming you hacked into the wiring to run them? otherwise I would have just used my NA coils and there wouldn't have been a problem.
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Old 06-19-2012, 10:50 AM   #5
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I would like to leave coils from 1,8. Because now when everything runs fine, just don't want to change something until i will get MS. But where was signal on NB? It was from ECU? I know that NB console has microcompuer wich is making signals to right. But some signals must go in from ecu or somewhere whiches controls tacho.
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Old 06-19-2012, 10:51 AM   #6
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yeah the NB ECU outputs the signal, are you using the NB ECU?

If so, what model year and I can tell you which pin to use and where to route it to.
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Old 06-19-2012, 11:15 AM   #7
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All swap was taken from 1999year. 1,8 103kw .
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Old 06-19-2012, 11:24 AM   #8
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So pin 2K grn/org is the tachout from the ECU. You'll have to wire it to yellow/blue wire coming into your instrument cluster.

or back to the yellow/blue wire on the ignitor wiring or the yellow/blue wire coming off IG- on the diagnostic connector.
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Old 06-19-2012, 11:44 AM   #9
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Thanks, i will try it and respond you
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Old 06-19-2012, 08:41 PM   #10
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Undoing the cam sensor on an NB will disable the tacho as well.
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Old 03-25-2013, 11:23 AM   #11
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Everything works fine, thanks for information
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