Mark, Thanks for the explanation but I already know how the system works. After 14 years of explaining the operation of the frequency valve I found that many owners have difficulty hearing the frequency valve while the engine is running. My test enables a person to listen for the buzz in a quitter environment. Thanks again. DMC Joe / DeLorean Services / <dmcjoe@xxxx> Web Site: <http://www.deloreanservices.com> ---------- > From: WMARKDAVIDSON <WMARKDAVIDSON@xxxx> > To: dmcnews@xxxxxxxxxxx > Subject: [DML] hesitation from the line > Date: Saturday, November 06, 1999 12:38 PM > > Joe > Maybe I misunderstood what you were saying about the frequency valve. Are > you saying the frequency valve will only buzz for about a second and a half > and then stop? I do not believe that the frequency can stop working. Mark