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Weird Hissing Type Noise

  • Thread starter Thread starter OC Stang
  • Start date Start date Dec 13, 2008
O

OC Stang

New Member
Jul 21, 2003
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0
Orange County, CA
Dec 13, 2008
#1
  • Dec 13, 2008
  • #1
I have a 2000 GT and my car has been making a weird noise lately. It might only be when it is cold like in mornings. At least that is when I notice it, but could be more often. When driving, a hissing sound sounds like it is coming from underneath the car. Sounds almost like an air hose, but not quite as loud. It only happens when the clutch is out. Does not matter if in gear or not. Have to be moving though. If I do hear it, once I put the clutch in, it stops. Release it and it starts again. It is an intermittent sound. Not constant. It can be constant for a few seconds but starts and stops frequently.

I have no idea what it could be. If anyone has any thoughts, please let me know.
Wondering if I should have the car looked at, but not sure it will happen when I take it in. Would like some idea of what to tell them if I do.

Also, on side note, car just got to 100,000 miles.
 
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poindexternasty

New Member
Apr 29, 2008
148
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0
Dec 13, 2008
#2
  • Dec 13, 2008
  • #2
ditto, i have the same problem!
 

the98stang

Active Member
Aug 12, 2005
2,408
0
47
Clovis, CA
Dec 13, 2008
#3
  • Dec 13, 2008
  • #3
If your car runs fine, I wouldn't worry about it
 

Bullitt347

I have been doing it wrong this whole time
15 Year Member
Mar 23, 2007
3,949
2,904
194
Middle of Maine
Dec 13, 2008
#4
  • Dec 13, 2008
  • #4
What you are hearing is the throw-out bearing making noise. When you are off of the clutch pedal, the load is off of the bearing, when you load the bearing by pressing on the clutch the noise changes. Nothing to worry about yet. But it will need to be replaced when you change the clutch in the car.
 
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OC Stang

New Member
Jul 21, 2003
83
0
0
Orange County, CA
Dec 14, 2008
#5
  • Dec 14, 2008
  • #5
Really? Ok, cool.

I have never replaced clutch or bearing in my car and I have had it since it had around 28K miles. Now at 100000. Only problems have had with car was A/C compressor clutch. Then just oils changes and then modding car. Haven't even touched the plugs. Probably should replace those though.
 
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andy13186

New Member
Aug 14, 2008
14
0
1
Dec 14, 2008
#6
  • Dec 14, 2008
  • #6
yea i have the exact same thing, it sounds like an air hissing noise, i doubt it has to do with the tob.. mine goes away once my car is warmed up but its kinda loud before its warmed up.

id love to be able to tighten something down and prevent it from leaking or whatever its doing while cold though
 
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OC Stang

New Member
Jul 21, 2003
83
0
0
Orange County, CA
Dec 16, 2008
#7
  • Dec 16, 2008
  • #7
yeah, mine really only seems to be noticeable when engine is cold like in mornings.

Weird.

Anyone else think it is throw out bearing or not?
 
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poindexternasty

New Member
Apr 29, 2008
148
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0
Dec 20, 2008
#8
  • Dec 20, 2008
  • #8
Did we ever figure this one out?
 
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OC Stang

New Member
Jul 21, 2003
83
0
0
Orange County, CA
Dec 23, 2008
#9
  • Dec 23, 2008
  • #9
poindexternasty said:
Did we ever figure this one out?
Click to expand...


I don't think so.

Car seems to run fine.

Just living with it.

If anyone has anymore thoughts, chime on it.
 
A

andy13186

New Member
Aug 14, 2008
14
0
1
Dec 31, 2008
#10
  • Dec 31, 2008
  • #10
OC Stang said:
I don't think so.

Car seems to run fine.

Just living with it.

If anyone has anymore thoughts, chime on it.
Click to expand...

i tried to make a video of it but i cant hear the hiss at all over the mufflers in the vid
 

evolucion311

Member
Mar 19, 2009
236
2
18
May 4, 2009
#11
  • May 4, 2009
  • #11
If its any help, over the winter my TOB was making a squeaky noise when engaged on cold mornings. It was a shick shick shick shick type sound. It goes away when the engine warms up. I have not experienced it since Spring began and the weather warmed up.

The hissing noise you describe preceded the TOB squeak. My clutch still feels good and I don't drive my car hard so I'm just going to ignore the TOB squeak and hiss until they become a problem and the whole clutch will have to be replaced.

"If it ain't broke, fix it with until it is" - US Navy Preventative Maintenance System (PMS)
 
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