Brad..i have tried this to no avail..anyhow it works normally after about 20-30 minutes..weird,huh? its a '74 imperial.. --- Brad Hogg <roadhogg@xxxxxxx> wrote: > Mark. Is this on a 74-78 Auto Temp? If it is, your > problem is that the > check valve in the vacuum resevoir is toast. These > are dead simple to > replace and easy to come by. You just replace the > soup can under the hood. > > ----- Original Message ----- > From: "Mark Blitman" <fedsales@xxxxxxxxx> > To: <mailing-list@xxxxxxxxxxxxxxxx> > Sent: Thursday, November 06, 2003 10:50 AM > Subject: Re: IML: Auto Temp II buzzing...... > > > zack..i get a similar sound but i have always > attributed it to the fan when it runs at middle or > slow speed and makes a noise..does your a/c cut out > on > acceleration? mine does and i have not been able to > locate the cause... > > >