 Hissing noise from under car |
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 Mar 25, 2012 - 4:29 PM
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 Enthusiast  Joined Mar 8, '12 From Hanford/Fresno, Ca Currently Offline Reputation: 20 (100%)  |
I got a 97 Ceica GT that hisses when it's cold but when it gets warm it stops. It sounds like it's coming from under the car somewhere. I'm thinking it's a leak from the exhaust pipe but if it was then it would've been hissing still even if it was warm right?
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Mar 25, 2012 - 4:32 PM
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 Enthusiast Joined Aug 23, '11 From kenton ohio Currently Offline Reputation: 14 (100%) |
Are you sure your not just hearing the intake pulling in air in?
mine with the sri is really loud at start up -------------------- 95 gt coupe, v6 swap weekend toy
99 gt hatch beams swapped wife's 94 st hatch my daily driver http://www.6gc.net/forums/index.php?showtopic=82235  n |
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Mar 25, 2012 - 8:42 PM
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 Enthusiast Joined Jun 12, '11 From Suffolk County, NY Currently Offline Reputation: 1 (100%) |
I get the same thing but its definitely from my intake. The hissing is really noticeable on startup.
However, it could also be a small exhaust leak in your pipe somewhere. The metal pipes expand when they heat up and this could plug a very small exhaust leak and cause the hissing to stop. |
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Mar 25, 2012 - 10:00 PM
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 Enthusiast Joined Jan 4, '12 From US Currently Offline Reputation: 6 (100%) |
Hissing? Sounds just like the IACV pulling air when it's cold, then shutting off after it warms up, like it should.
-------------------- 1993 Celica GT Coupe - sold
1994 Celica GT Liftback |
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Mar 26, 2012 - 12:25 AM
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Enthusiast Joined Mar 8, '12 From Hanford/Fresno, Ca Currently Offline Reputation: 20 (100%) |
QUOTE (kurt95gt @ Mar 25, 2012 - 4:32 PM)  Are you sure your not just hearing the intake pulling in air in? mine with the sri is really loud at start up Yes I'm sure. I listened carefully all around my car and I can hear it mostly when I'm at the back right wheel by the exhaust pipe. I can also hear it when I'm in the car idling. QUOTE (jt1023 @ Mar 25, 2012 - 8:42 PM) I get the same thing but its definitely from my intake. The hissing is really noticeable on startup. However, it could also be a small exhaust leak in your pipe somewhere. The metal pipes expand when they heat up and this could plug a very small exhaust leak and cause the hissing to stop. Yea. I was thinking that too. -------------------- |
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Apr 7, 2012 - 10:28 AM
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Enthusiast Joined Feb 7, '10 From Tampa, FLorida Currently Offline Reputation: 0 (0%) |
i had the same hissing under my rear seat- that was my fuel pump going out- it hisses then goes out- is your car sputtering at all when it first starts to go
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Apr 7, 2012 - 3:40 PM
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Enthusiast Joined Mar 8, '12 From Hanford/Fresno, Ca Currently Offline Reputation: 20 (100%) |
QUOTE (Celigirl @ Apr 7, 2012 - 10:28 AM) i had the same hissing under my rear seat- that was my fuel pump going out- it hisses then goes out- is your car sputtering at all when it first starts to go Yea it's like around under my rear seats. I don't understand what you meant as sputters but I do know that it always has condensation out of the tail pipe on cold starts. -------------------- |
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Apr 7, 2012 - 8:05 PM
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 Enthusiast Joined Jan 20, '09 From Winnipeg Currently Offline Reputation: 5 (100%) |
Is it a new car?
Could just be the sound of an aftermarket fuel pump. -------------------- -Protection mode, For when your amp tries to blow its load. 1995 Toyota Celica GTS - Daily Driver 1999 Chevy Cavalier - Winter Beater 1994 Honda Civic CX Hatchback - Dead My Celica! |
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Apr 8, 2012 - 2:09 AM
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Enthusiast Joined Mar 8, '12 From Hanford/Fresno, Ca Currently Offline Reputation: 20 (100%) |
QUOTE (jordisonjr @ Apr 7, 2012 - 8:05 PM) Is it a new car? Could just be the sound of an aftermarket fuel pump. Nope. I bought it from a private owner so it's used. -------------------- |
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Apr 8, 2012 - 12:05 PM
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Enthusiast Joined Apr 8, '12 From Norway Currently Offline Reputation: 0 (0%) |
QUOTE (ILoveMySilly97 @ Mar 25, 2012 - 5:29 PM) I got a 97 Ceica GT that hisses when it's cold but when it gets warm it stops. It sounds like it's coming from under the car somewhere. I'm thinking it's a leak from the exhaust pipe but if it was then it would've been hissing still even if it was warm right? If it's only when startup/ when it's cold, then I would take a look at the Servo pump or water pump maybe? My servo wheele is making a noise like that when it's cold.. Nothing to worry about though ! |
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Apr 8, 2012 - 12:34 PM
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 Enthusiast Joined Apr 20, '11 From College Station, Tx Currently Offline Reputation: 2 (100%) |
My water pump made a noise because it was going out but it was a hissing it was a grinding type noise. And you can definitely tell its from under the engine bay so I don't think it's water pump
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Apr 8, 2012 - 4:25 PM
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Enthusiast Joined Mar 8, '12 From Hanford/Fresno, Ca Currently Offline Reputation: 20 (100%) |
QUOTE (NorthKennedy @ Apr 8, 2012 - 1:05 PM) QUOTE (ILoveMySilly97 @ Mar 25, 2012 - 5:29 PM) I got a 97 Ceica GT that hisses when it's cold but when it gets warm it stops. It sounds like it's coming from under the car somewhere. I'm thinking it's a leak from the exhaust pipe but if it was then it would've been hissing still even if it was warm right? If it's only when startup/ when it's cold, then I would take a look at the Servo pump or water pump maybe? My servo wheele is making a noise like that when it's cold.. Nothing to worry about though ! Actually the previous owner I bought it from just got the water pump replaced like 4 months ago. So it can't be the waterpump. -------------------- |
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Apr 8, 2012 - 5:25 PM
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 Enthusiast Joined Aug 2, '05 From Guam Currently Offline Reputation: 15 (100%) |
if you rev, you can tell if its an exhaust leak or not.
-------------------- 94 Celica GT
|Toyota OEM Japan|Toyota Racing Development|Tom's|Competition Clutch|5Zigen|Apexi| |Laille/Beatrush|Magnecor|Denso|Royal Purple|Optima|PIAA|PW JDM|Megan Racing|Nitto| |Work|Greddy|Samco|Project Mu|H&R|Gates|Moog|Rota|Yokohama|Epman|1320|Upgr8 04 Celica GT |Toyota OEM Japan|Toyota Racing Development|Tein|BC Racing|Greddy| |
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Apr 11, 2012 - 1:48 AM
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Enthusiast Joined Mar 8, '12 From Hanford/Fresno, Ca Currently Offline Reputation: 20 (100%) |
EDIT: My car does have bad emission too. It stinks up the whole garage when I turn it on.
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