See if the buzz you mention is coming from the modules. The RPM Relay contains a 555 timer chip. If this chip goes duff in the RPM Relay then it will buzz. The tone/ frequency of the buzz will get higher with respect to the engine revs although the engine will still run as it is pulsed on long enough to drive the fuel pump. If this is the case either renew the 555 timer (£0.80 approx) or renew the RPM Relay. Another thing to check, good luck. Nick. "Stian Birkeland <delorean@xxxx>" <delorean@xxxx> wrote:I tried the same thing today and it does buzz continuously right until I start the car and my RPM relay *does* work, so what's causing this? My main concern is if this can be dangerous in any way and how it can be sorted out. I haven't look at the earth strap as Kevin suggested though... Yet again - are you guys sure it is the frequency valve? When I first heard the buzz, I immediately thought of the coil, but no sound there/no sound on the right hand of the engine compartment. I'm positive that this sound comes from somewhere around the cold start valve - are there any other "gadget" around that area which could cause the buzz. Again - is the buzzing dangerous in any way? It does sound like the whole engine has gone electric! Best wishes Stian --- In doc-uk@xxxxxxxxxxxxxxx, "Kevins Work" <kevin.milliken@xxxx> wrote: > Hi Chris / Martin > > My De used to do this but after I sorted the Earth strap out it does not > buzz any more. > > Kevin #5959 > -----Original Message----- > From: mgutkowski@xxxx [mailto:webmaster@xxxx] > Sent: 23 February 2003 11:48 AM > To: doc-uk@xxxxxxxxxxxxxxx > Subject: Re: [doc] Buzzing from engine > > > Hi Chris > > The FV is not SUPPOSED to fire up on ignition but does so on may cars. It > has recently stopped doing this on mine and has made me notice the > accumulator is shot. > > Stian, it should not run continuously with ignition on before you start - > it may run for a second or so. If it does not turn off, your RPM relay may > well be bad > > Martin > #1458 > #4426 > > Original Message: > ----------------- > From: Chris chris@xxxx > Date: Sat, 22 Feb 2003 19:05:02 -0000 > To: doc-uk@xxxxxxxxxxxxxxx > Subject: Re: [doc] Buzzing from engine > > > Stian > > > Today I went out in the garage for the obligatory once-a-week start and > warm-up of my DeLorean. It is stored during the winter time. At the same > time I wanted to check the door lights etc. so I didn't start the car, but > turned the key to "position 2", when I suddenly heard a loud buzz coming > from the engine compartment. > > Its the frequency valve (FV) which is on the RH rocker cover ( opposite > side > to the cold start ). When you turn the key to position 2 the RPM relay > powers up the fuel pump ( and FV) and primes the fuel system for starting. > > Chris S > > > > > DOC UK Website: www.delorean.co.uk > Unsubscribe: doc-uk-unsubscribe@xxxxxxxxxxxxxxx > ** Unless otherwise stated, all messages posted to the group are assumed > public and may be printed in the club magazine ** > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > > > ------------------------------------------------------------------ -- > mail2web - Check your email from the web at > http://mail2web.com/ . > > > > Yahoo! Groups Sponsor > ADVERTISEMENT > > > > > DOC UK Website: www.delorean.co.uk > Unsubscribe: doc-uk-unsubscribe@xxxxxxxxxxxxxxx > ** Unless otherwise stated, all messages posted to the group are assumed > public and may be printed in the club magazine ** > > Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. > > > > [Non-text portions of this message have been removed] Yahoo! Groups SponsorADVERTISEMENT DOC UK Website: www.delorean.co.uk Unsubscribe: doc-uk-unsubscribe@xxxxxxxxxxxxxxx ** Unless otherwise stated, all messages posted to the group are assumed public and may be printed in the club magazine ** Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. --------------------------------- With Yahoo! Mail you can get a bigger mailbox -- choose a size that fits your needs [Non-text portions of this message have been removed]