You will always have the sucking sound unless you modify your throttle body
or go with an aftermarket unit. It is caused by the air rushing by the large
horn in the front of the throttle body. Remove that and the sound goes away.
----- Original Message -----
From: "Dave" <ded74@yahoo.com>
To: <dakota-truck-moderator@bent.twistedbits.net>
Sent: Wednesday, July 18, 2001 13:10
Subject: DML: Re: RE: Re: Gained Power, lost mileage, and what is that
sucking sound???
> Well, my gas mileage is back up, 17.7 on the last tank, but still that
> sucking sound, do I need to worry about it? Thanks again.
> --
> Dave
> Denver, CO
> '93 Sport 4x4 V-6
>
> ""Bernd D. Ratsch"" <bernd@texas.net> wrote in message
> news:001501c10f86$a1150c30$040aa8c0@homenet.com...
> >
> > The noise is coming from the IAC port on the throttle body. Yes, it's
> > controlled vacuum leak as well...and that's how the PCM controls idle.
> >
> > - Bernd
> >
> > -----Original Message-----
> > From: owner-dakota-truck@buffnet.net
> > [mailto:owner-dakota-truck@buffnet.net] On Behalf Of Kevin
> > Sent: Wednesday, July 18, 2001 5:13 AM
> > To: dakota-truck@buffnet.net
> > Subject: DML: Re: Gained Power, lost mileage, and what is that sucking
> > sound???
> >
> >
> > That is the sound of your K&N sucking in a lot more air than ever
> > before. Part of the sound is because the design of your throttle body.
> > You probably are getting less miles per gallon because you are in the
> > throttle more than before. If you drive more conservative ( which is
> > hard to do when you make horsepower mods) you will most likely see an
> > increase in gas mileage.
> > ----- Original Message -----
> > From: "Dave" <ded74@yahoo.com>
> > To: <dakota-truck-moderator@bent.twistedbits.net>
> > Sent: Tuesday, July 17, 2001 18:34
> > Subject: DML: Gained Power, lost mileage, and what is that sucking
> > sound???
> >
> >
> > > Hey all, I'm back, don't have my new baby, family emergency forced me
> > > to postpone my purchase. I have a question for you tho, I put in
> > > 3923's and went to a Edelbrock 14x3 open element air cleaner. I
> > > gained power (at
> > least
> > > I can feel it), but I seem to have lost some gas mileage, like around
> > > 2
> > mpg.
> > > And there is also a sucking sound when I'm pressing or letting off the
> >
> > > throttle, if it's idling or WOT it's ok. My bro said it might be a
> > > vacuum leak? Does that sound right, and would that rob my mileage?
> > > And if
> > that's
> > > it, what do I do? Thanks guys.
> > > --
> > > Dave
> > > Denver, CO
> > > '93 Sport 4x4 V-6
> > >
> > >
> > >
> > >
> >
>
>
>
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