Joe, As I said I have seen the FV not work and when the 02 was replaced it started the BuZZZ again. Your mistaken because I had the car here last year. The man is looking for answer not so much for in-depth technical that he can't possibility control or even fix and doesn't have the dwell meter to measure with. The FV won't do it's job of varying the pressure on the lower chamber of the fuel distributor if the 02 / ECU isn't ( working )correctly. Yes, It as I know will sit in the manuel state of 80/20 and the car will run rich, thus causing a problem. John Hervey www.specialTauto.com -----Original Message----- From: Joe LoRe [mailto:dmcjoe@xxxxxxx] Sent: Friday, February 18, 2005 12:54 PM To: dmcnews@xxxxxxxxxxxxxxx Subject: [DML] Re: Engine Trouble Not so. (See workshop manual D:04:10 System Control Monitors, bottom of page) In other words if you disconnect the O2 sensor or short circuit the sensor lead the Lamda ECU will continue to send a fixed voltage to the frequency valve resulting in continued operation. Most non-working frequency valve conditions are related to circuitry problems. i.e. A broken wire, connector problem, or defective component. Refer to D:04:12 items #1, 2, and 3 to locate the source of the problem. DMC Joe --- In dmcnews@xxxxxxxxxxxxxxx, "John Hervey" <john@xxxx> wrote: > > Justin, I have seen FV not work because the 02 sensor was bad. If the 02 > doesn't send the signal to the ECU then possible no reason for the FV to > work. > Just and FYI. > John Hervey > www.specialtauto.com > > > > [moderator snip] To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/