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Re: Tachometer sticks

To: "Eric A. Yates" <eyates@enteract.com>
Subject: Re: Tachometer sticks
From: Dave Chu <dave@ece.concordia.ca>
Date: Wed, 19 Jul 2000 17:30:14 -0400


In message <B59B842C.133F%eyates@enteract.com>you write:
>
>
>Jeff Gruber wrote:
>
>> My tachometer won't go past 3200 rpm and it seems to stick
>> there when the engine goes below 3200.
>> 
>> Any suggestions?
>
>I too have a "sticky" tach, although its behavior is different from yours,
>Jeff.
>
>My tach does not show anything when the car is first started up. It takes
>maybe 3 or 4 seconds before the needle jumps into action, and from then on
>it works fine. Seems like an electrical problem... as if my tach just isn't
>getting any "juice" until a few moments pass after startup. But why then
>would it work fine after that? This behavior is not periodic; it always
>happens.
>

   Mine does the samething.  I think it is sticking because if I tap the
   Tach. when it is not working right after the engine starts the needle 
   would pop up and works fine after that.  Otherwise, I just rev. the
   engine or start driving, the tach will start working.

Dave                                                  |\ |     | |      
_______________________________________/\  /\  /\_____| \|_____| |____________
Dave Chu                                 \/  \/       | /|     | |  
Dept. of Elec. & Comp. Eng.                           |/ |     | |      
Concordia University              Voice:(514)848-3115   Fax:(514)848-2802 
1455 de Maisonneuve W. H961       Email:dave@ece.concordia.ca
Montreal, Quebec, Canada H3G 1M8  http://www.ece.concordia.ca/~dave/addr.html
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