Re: [tech]hall sensor...?

[16v Jason <jason@scirocco.org>]

Mine does this, and has done it since it had 30k miles on it when I got
it.

My tach acts like a combination tachometer and "Battery Health
Meter".  When the Battery's not fully charged, the tach will
jump up the scale as I crank, and fall back to normal after I start
it.  The higher the tach goes, the more dead my battery is.  If
it jumps immediately to 8000 when I turn the key to the "on"
position, my battery will be discharged to the point where the car won't
crank.

It often will bounce quickly at idle to 2000 and back if I touch the gas
pedal enough to trip the fuel cutoff microswitch.  Again, if the
battery is brand new and fully charged, it doesn't do it.  Within 8
months, it starts up again.  (I eat a battery a year for no apparent
reason).

Jason



At 10:53 PM 1/16/01 , chris jevens wrote:

Hwody rocco list... I wanted to know if anyone has ever had the tach peg the scales while during start-up? I start my car, and the tach will sit at 5-6k. All awhile the motor runs like ass at about 800-1k... any guesses? I was wondering if it could be the dist w/the hall... I don';t know...
 
chris
87 16v rocco

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1987 Scirocco 16v
1988 Mercedes 190E Sport Euro


http://www.scirocco16v.org