Paul of Dayon

A new sound has appeared and I am having trouble reproducing it in the
driveway. When I am driving, especially if the car isn't warmed up, a
whistle appears and disappears at different throttle positions. It sounds
like an air / vacuum whistle and varies intensity a bit. As I was coming
home tonight on the highway I found I could make it appear with light
acceleration and go away by floating the accelerator or just taking my foot
off the gas. If I hold the throttle just right the whistle is continuous.
Speed isn't an issue since it will happen when accelerating from a start.
Once the car is warm it is very hard to make it whistle.

I figure it is either a leaking vacuum line I can't find, the tranny, or the
IAC is getting ready to trip me up. It's about 2 degrees now so I plan to
wait a bit before I search. I thought I'd pick the collective brains in
here while waiting.

Thanks in advance, folks. (Geez I love this place...)

PoD

Backyard Mechanic

"Paul of Dayon" <plus1111@nospam.hotmail.com> wrote:

> A new sound has appeared and I am having trouble reproducing it in the
> driveway. When I am driving, especially if the car isn't warmed up, a
> whistle appears and disappears at different throttle positions. It
> sounds like an air / vacuum whistle and varies intensity a bit. As I
> was coming home tonight on the highway I found I could make it appear
> with light acceleration and go away by floating the accelerator or
> just taking my foot off the gas. If I hold the throttle just right
> the whistle is continuous. Speed isn't an issue since it will happen
> when accelerating from a start. Once the car is warm it is very hard
> to make it whistle.
>
> I figure it is either a leaking vacuum line I can't find, the tranny,
> or the IAC is getting ready to trip me up. It's about 2 degrees now
> so I plan to wait a bit before I search. I thought I'd pick the
> collective brains in here while waiting.
>
> Thanks in advance, folks. (Geez I love this place...)

If your IAC didnt give you idle problems today, that prolly isnt it.

My TBIRD trans has been whistling for 50,000 miles, but warm, not when
cold.

--
Yeh, I'm a Krusty old Geezer, putting up with my 'smartass' is the price
you pay..DEAL with it!

CJB

I'm not sure if you even have this on your car, but...

My Dad's Crown Vic, a late 80's model, has a vacuum e-brake release motor.
I noticed not long ago that it's leaking, causing a light whistle under the
similar conditions to those you describe.

CJB

"Paul of Dayon" <plus1111@nospam.hotmail.com> wrote in message
news:HaKpf.35187$dO2.4069@newssvr29.news.prodigy.net...
> A new sound has appeared and I am having trouble reproducing it in the
> driveway. When I am driving, especially if the car isn't warmed up, a
> whistle appears and disappears at different throttle positions. It sounds
> like an air / vacuum whistle and varies intensity a bit. As I was coming
> home tonight on the highway I found I could make it appear with light
> acceleration and go away by floating the accelerator or just taking my
foot
> off the gas. If I hold the throttle just right the whistle is continuous.
> Speed isn't an issue since it will happen when accelerating from a start.
> Once the car is warm it is very hard to make it whistle.
>
> I figure it is either a leaking vacuum line I can't find, the tranny, or
the
> IAC is getting ready to trip me up. It's about 2 degrees now so I plan to
> wait a bit before I search. I thought I'd pick the collective brains in
> here while waiting.
>
> Thanks in advance, folks. (Geez I love this place...)
>
> PoD
>
>

lugnut

On Tue, 20 Dec 2005 02:40:39 GMT, "Paul of Dayon"
<plus1111@nospam.hotmail.com> wrote:

>A new sound has appeared and I am having trouble reproducing it in the
>driveway. When I am driving, especially if the car isn't warmed up, a
>whistle appears and disappears at different throttle positions. It sounds
>like an air / vacuum whistle and varies intensity a bit. As I was coming
>home tonight on the highway I found I could make it appear with light
>acceleration and go away by floating the accelerator or just taking my foot
>off the gas. If I hold the throttle just right the whistle is continuous.
>Speed isn't an issue since it will happen when accelerating from a start.
>Once the car is warm it is very hard to make it whistle.
>
>I figure it is either a leaking vacuum line I can't find, the tranny, or the
>IAC is getting ready to trip me up. It's about 2 degrees now so I plan to
>wait a bit before I search. I thought I'd pick the collective brains in
>here while waiting.
>
>Thanks in advance, folks. (Geez I love this place...)
>
>PoD
>


I get a moaning sound from mine related to the IAC at or
near idle in cool weather. If the air cond is on, I almost
never hear it. It can also be heard at light throttle on
occasion because the IAC is used as a dashpot to prevent
excessive intake vacuum which may affect emissions. You can
change the IAC if you like but, my experience is that
anything more than making sure it is clean is probably a
waste of time and money because the replacement may be just
as bad or worse.

Good luck & since you can't get it at Wally World this year,
Merry Christmas!!
Lugnut

Paul of Dayon

Thanks to everyone with thoughts about the whistle on my car. I kinda
figure I might fix it by turning the stereo up a little bit more. The noise
is definitely coming from outside, not under the dash. I lost a chunk of
the drivers door weatherstrip a few weeks ago - the seat belt thingie got
caught one too many times. The gap is letting a lot of noise get in.

I may clean the IAC just because - I haven't done a thing to it ever! First
things first, tho. I need for the car to make heat. I replaced the t-stat
last week and had heat for a day. I kinda suspect a heater clog. I hope I
can backflush it - I don't have the patience to replace it right now. The
parts sites show a heater control valve but I sure don't see one. Tomorrow
is a day off for me - I guess I'll conduct some experiments. The garage
isn't quite down to freezing, yet.

PoD



"lugnut" <lugnut@bellsouth.net> wrote in message
news:og4gq1poh65he48llvaqf2t1gagkohavhp@4ax.com...
> On Tue, 20 Dec 2005 02:40:39 GMT, "Paul of Dayon"
> <plus1111@nospam.hotmail.com> wrote:
>
>>A new sound has appeared and I am having trouble reproducing it in the
>>driveway. When I am driving, especially if the car isn't warmed up, a
>>whistle appears and disappears at different throttle positions. It sounds
>>like an air / vacuum whistle and varies intensity a bit. As I was coming
>>home tonight on the highway I found I could make it appear with light
>>acceleration and go away by floating the accelerator or just taking my
>>foot
>>off the gas. If I hold the throttle just right the whistle is continuous.
>>Speed isn't an issue since it will happen when accelerating from a start.
>>Once the car is warm it is very hard to make it whistle.
>>
>>I figure it is either a leaking vacuum line I can't find, the tranny, or
>>the
>>IAC is getting ready to trip me up. It's about 2 degrees now so I plan to
>>wait a bit before I search. I thought I'd pick the collective brains in
>>here while waiting.
>>
>>Thanks in advance, folks. (Geez I love this place...)
>>
>>PoD
>>
>
>
> I get a moaning sound from mine related to the IAC at or
> near idle in cool weather. If the air cond is on, I almost
> never hear it. It can also be heard at light throttle on
> occasion because the IAC is used as a dashpot to prevent
> excessive intake vacuum which may affect emissions. You can
> change the IAC if you like but, my experience is that
> anything more than making sure it is clean is probably a
> waste of time and money because the replacement may be just
> as bad or worse.
>
> Good luck & since you can't get it at Wally World this year,
> Merry Christmas!!
> Lugnut

Jim Nagy

In article <HaKpf.35187$dO2.4069@newssvr29.news.prodigy.net>, Paul of
Dayon <plus1111@nospam.hotmail.com> wrote:

> A new sound has appeared and I am having trouble reproducing it in the
> driveway. When I am driving, especially if the car isn't warmed up, a
> whistle appears and disappears at different throttle positions. It sounds
> like an air / vacuum whistle and varies intensity a bit. As I was coming
> home tonight on the highway I found I could make it appear with light

That sounds a bit like what I had with a 94 grand Marquis. It took a
lot to narrow down, but it turned out to be the bearing in the small
idler wheel for the fan belt. I repacked it as best I could to test,
the noise went away for a long time. When it did reappear, I bought a
new idler.

--
Jim Nagy
Elm Electronics

Paul of Dayon

Now that you mention it Jim, the idler squalls like crazy for a brief time
after startup on a cold day. It's done it since I got the car, 80k+ ago. I
will try your technique. I might even have some spray grease... and I think
I have a needle attachment for my grease gun, too. Thanks!

PoD


"Jim Nagy" <noname@nospam.com> wrote in message
news:201220051957042031%noname@nospam.com...
> In article <HaKpf.35187$dO2.4069@newssvr29.news.prodigy.net>, Paul of
> Dayon <plus1111@nospam.hotmail.com> wrote:
>
>> A new sound has appeared and I am having trouble reproducing it in the
>> driveway. When I am driving, especially if the car isn't warmed up, a
>> whistle appears and disappears at different throttle positions. It
>> sounds
>> like an air / vacuum whistle and varies intensity a bit. As I was coming
>> home tonight on the highway I found I could make it appear with light
>
> That sounds a bit like what I had with a 94 grand Marquis. It took a
> lot to narrow down, but it turned out to be the bearing in the small
> idler wheel for the fan belt. I repacked it as best I could to test,
> the noise went away for a long time. When it did reappear, I bought a
> new idler.
>
> --
> Jim Nagy
> Elm Electronics

Sharky

I was going to mention the same thing, idler pulley, fan bearing or
alternator pulley. Start the car, pop the hood and spray all the pulleys,
alternators, A/C pump and whatever else is connected to the fan belt with
some type of lubricant. I would suggest something better than WD-40, as it
only seems to last for so long. As far as your no heat goes, it sounds like
you have air in your cooling system. Either that or no pressure, might
indicate a bad rad. cap or partially blocked heater core.

Sharky

Paul of Dayon

thanks Sharky. As for the heater, I backflushed the heater core and blew
out the overflow hose to the pressurized reservoir and got a new cap - put
it all back together - voila! (actually a whole string section!) much heat.
The whistle and lube idea is and easy test. I'll prolly use Sillycone spray
since the belt should have a good shot of it occasionally, anyway. That way
I don't have to worry about overspray.

Thanks to everyone!! What a great community we have here!

PoD


"Sharky" <cleighton@NOSPAM.eastlink.ca> wrote in message
news:FOmqf.67$OU5.1@clgrps13...
>I was going to mention the same thing, idler pulley, fan bearing or
>alternator pulley. Start the car, pop the hood and spray all the pulleys,
>alternators, A/C pump and whatever else is connected to the fan belt with
>some type of lubricant. I would suggest something better than WD-40, as it
>only seems to last for so long. As far as your no heat goes, it sounds
>like you have air in your cooling system. Either that or no pressure,
>might indicate a bad rad. cap or partially blocked heater core.
>
> Sharky
>
>