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Unread 18-11-2005, 12:54
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Al Skierkiewicz Al Skierkiewicz is offline
Broadcast Eng/Chief Robot Inspector
AKA: Big Al WFFA 2005
FRC #0111 (WildStang)
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Re: tachometer mystery?

Quote:
Originally Posted by sciguy125
I was thinking that the music thing might be from extra power consumption. The electrical system is connected to the alternator which is connected to the engine.

As for the temp sensor, it just doesn't work at that temperature. When the engine is really cold or already warm, it's fine.
It's possible that you are drawing too much current through the dash power wiring. As the current goes up the voltage drop on the wire goes up. (just like the wiring to speed controllers and motors.)

I had the same problem with a normally aspirated engine years ago. The carb just didn't like wet weather between 32 and 45 when it was cold. Seemed that ice would form across the venturis as the air was accelerated.
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Al
WB9UVJ
www.wildstang.org
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Storming the Tower since 1996.