Whistling 4.6?

D

Digger

New Member

Feb 5, 2006

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Nov 30, 2007

#1

• Nov 30, 2007

• #1

I have a 96 GT convertable, 5spd. When it is cold out, below 40 degrees, the car will whistle on startup. It is defintely under the hood, on the right side. It will go away once the car is warmed up. I upgraded the intake with the factory intake this summer, but it whistled last winter too. I was actually hoping the new intake would solve the problem. The sound doesn't seem to be RPM related.
Any ideas what this is and how to stop it?
TIA

 

SaleenGT2001

Well-Known Member

Jul 18, 2005

2,811

4

58

Four Oaks NC

Nov 30, 2007

#2

• Nov 30, 2007

• #2

sounds like you have a supercharger hidden somewhere in there.

if so take it off and send it to me. i'll send you a stock intake in its place

 

2000fordstanggt

Member

Sep 6, 2005

404

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Westland, MI

Nov 30, 2007

#3

• Nov 30, 2007

• #3

if you have a goodyear gatorback belt those will whistle sometimes.

 

02LaserRed2V

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Jul 30, 2004

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Augusta, GA

Nov 30, 2007

#4

• Nov 30, 2007

• #4

Judging by the two posts above me it appears your car has a gatorback belt and a hidden supercharger. Talk about being lucky. That's like finding that $20 bill in an old jacket pocket that hadn't been worn in years.

 

fobra559

At least it's more erect and not floppy anymore.

Nov 1, 2007

721

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Lindsay, CA

Nov 30, 2007

#5

• Nov 30, 2007

• #5

02LaserRed2V said:

Judging by the two posts above me it appears your car has a gatorback belt and a hidden supercharger. Talk about being lucky. That's like finding that $20 bill in an old jacket pocket that hadn't been worn in years.

Click to expand...

Thats what I was thinking.

 

BlackGT4.6

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Jun 15, 2005

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In.

Nov 30, 2007

#6

• Nov 30, 2007

• #6

or maybe its just a bad idler pulley.

 

G

guitarpnk99

New Member

Nov 24, 2007

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Moline, IL

Dec 1, 2007

#7

• Dec 1, 2007

• #7

or your ac compressor. I had a whistle too and I got the ac delete and it solved my problem.

 

Winters98GT

Whoop...whoop-whoop-whoop-whoop...GANGNAM STYLE!!!

Founding Member

Nov 29, 1999

5,520

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H Town

Dec 1, 2007

#8

• Dec 1, 2007

• #8

you guys are mean.......

 

2000fordstanggt

Member

Sep 6, 2005

404

1

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Westland, MI

Dec 1, 2007

#9

• Dec 1, 2007

• #9

BlackGT4.6 said:

or maybe its just a bad idler pulley.

Click to expand...

when my idler pulley was ****ed up the noise came after it warmed up, not when it was cold.

 

G

guitarpnk99

New Member

Nov 24, 2007

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Moline, IL

Dec 1, 2007

#10

• Dec 1, 2007

• #10

P.S. The drive-belt tensioner pulley or idler-pulley bearings are apt to make a squealing noise when the engine is started in cold weather. (1994-96)

 

scupking

Active Member

Sep 18, 2005

1,186

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Enfield, CT

Dec 1, 2007

#11

• Dec 1, 2007

• #11

My 01 does this and it does when its cold and it does sound like it has a S/C (I guess its kind of like false advertising). I'm think its the idler pulley.

 

BlackGT4.6

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Jun 15, 2005

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Dec 3, 2007

#12

• Dec 3, 2007

• #12

2000fordstanggt said:

when my idler pulley was ****ed up the noise came after it warmed up, not when it was cold.

Click to expand...

mine was on cold starts.

 

2000fordstanggt

Member

Sep 6, 2005

404

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Westland, MI

Dec 3, 2007

#13

• Dec 3, 2007

• #13

BlackGT4.6 said:

mine was on cold starts.

Click to expand...

hmm for some reason whenever i got off the freeway after being on it for a long time mine would start to whistile.

 

D

Digger

New Member

Feb 5, 2006

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Dec 4, 2007

#14

• Dec 4, 2007

• #14

I should change my for sale ad to read "hidden invisible supercharger and disguised goodyear gatorback belts" maybe it will sell faster

 

lvmustanggt

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Apr 9, 2006

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Las Vegas

Dec 5, 2007

#15

• Dec 5, 2007

• #15

Mine had been doing it for about a year now and I have change alternator, idler pulley, belt tensioner , iac valve , egr valve , belt and pcv but still no luck. I have search online and google with no luck. Mine starts around 2000 rpm and when ever I shift I hear a hiss like BOV out of turbo. I have checked all the vacuum but still no luck finding leak

 

2000fordstanggt

Member

Sep 6, 2005

404

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Westland, MI

Dec 5, 2007

#16

• Dec 5, 2007

• #16

lvmustanggt said:

Mine had been doing it for about a year now and I have change alternator, idler pulley, belt tensioner , iac valve , egr valve , belt and pcv but still no luck. I have search online and google with no luck. Mine starts around 2000 rpm and when ever I shift I hear a hiss like BOV out of turbo. I have checked all the vacuum but still no luck finding leak

Click to expand...

ha, so now you also have a hidden turbo

 

RandyStinchcomb

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May 25, 2005

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Randallstown, Md

Dec 5, 2007

#17

• Dec 5, 2007

• #17

it is either a IAC or the hose and muffler(small plastic box) going to the IAC or both, some of the 4.6's had a TSB on this......