frequency valve, 200tq '89 MC2

Tue Jan 23 23:11:37 EST 2001

Could be that your static mixture is off a little, and the computer is compensating by cycling the valve. Have you checked/set the mixture recently. May also be a funky O2 sensor throwing things out a bit...

-Nate
  ----- Original Message ----- 
  From: kbogach 
  To: quattro at audifans.com 
  Sent: Tuesday, January 23, 2001 10:54 PM
  Subject: frequency valve, 200tq '89 MC2

  Hi.

  Checking the car I noticed that FV buzzes not constantly but periodically (on idle), with 1-2 seconds breaks when it is silent.  On my 200tq '89 MC1 it buzzes constantly. Is it normal on MC2 (MAC-14)?  At output test FV  sounds ok.

  Konstantin Bogach.
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