Hi all,
Since getting my car running, I've tried both IDM output (pin 2 on EDIS module), pin 35 (tach output on uS) and even soldered up my own module with the three diodes as shown on the EDIS page. None of these solutions has worked and I've no idea on how to troubleshoot or find out whether the fault is with the tachometer itself. Where could I start with this?
Tachometer issues
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Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
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Matt Cramer
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Re: Tachometer issues
Do you have any idea what signal the tach runs off of?
Matt Cramer at DIY Autotune
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anonymous.shyster
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Re: Tachometer issues
I'm not sure. It's an old Jaeger unit, probably designed in the late 1960's. I'm yet to get any information from the guys on the French car forums. Is there some way to find out?
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Matt Cramer
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Re: Tachometer issues
About the only way I can think of is either guesswork or scoping the signal that got fed to it in a stock configuration.
Matt Cramer at DIY Autotune
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anonymous.shyster
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Re: Tachometer issues
Well, I got the logic board upgraded, but still no tachometer working from the IDM. 
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24c
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Re: Tachometer issues
Small picture would help, front and back (showing connections). It's probably current sensing type, and FYI, to work with electronic ignitions you'd have to convert it to voltage sensing traditionally, but I'm sure you could do it with some external electronics now.anonymous.shyster wrote:I'm not sure. It's an old Jaeger unit, probably designed in the late 1960's. ...