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post #1 of 9 (permalink) Old 02-28-09, 02:42 PM Thread Starter
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hissing sound

the first time i heard this sound was 1 week ago it sounds like its comeing from the bottom underneath the car its happens when i put it in park and turn it off thats when i here this sounds like air leaking out of a tire or something but from u nder the car any help plz

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post #2 of 9 (permalink) Old 02-28-09, 05:49 PM
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Re: hissing sound

From what part of the car? If its the front, does it make that sound when the hood is up? If so it might be a vacuum leak. If its the back, it might be a leak in the brake cable.

just a thought

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post #3 of 9 (permalink) Old 02-28-09, 07:07 PM Thread Starter
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Re: hissing sound

i have a 3.8 v6 sounds like from under the front of the car with the hood down sounds like a tire leak that sound
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post #4 of 9 (permalink) Old 02-28-09, 07:15 PM Thread Starter
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Re: hissing sound

do any codes come up if it was a vacum leak just had my engine scanned and found no codes but sometimes when i get into the car first thing in the morning before i start it it smeels funny like a strong smell
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post #5 of 9 (permalink) Old 02-28-09, 07:17 PM Thread Starter
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Re: hissing sound

also after i drive it and turn it off it sounds like crackling or something when i get out the vechile
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post #6 of 9 (permalink) Old 03-01-09, 12:36 PM
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Re: hissing sound

You can get a small plastic or copper tube at a hardware store- about 3/8. It is easy to bend for tight places. Place it up to your ear and move it around the car to locate the general area of the noise.
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post #7 of 9 (permalink) Old 03-01-09, 07:07 PM
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Re: hissing sound

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Originally Posted by tmuller02 View Post
also after i drive it and turn it off it sounds like crackling or something when i get out the vechile

thats pretty normal, its slowly releasing the oil pressure, you can definatly hear that in a 4cyl

What kind of smell? With a weird smell, It might be a leak in the trans line. There might be a stopped up trans line and the pressure could have caused a small leak.

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post #8 of 9 (permalink) Old 03-03-09, 05:51 PM Thread Starter
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Re: hissing sound

it does kind of smell like trans fluid but know trouble code the car is still under warrenty its a 3.8 v6 when im pusin 70 my rpms are at 2 is that norm it kind of feels like its shifting hard on the down shift at 40 mph
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post #9 of 9 (permalink) Old 03-03-09, 06:07 PM
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Re: hissing sound

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Originally Posted by tmuller02 View Post
it does kind of smell like trans fluid but know trouble code the car is still under warrenty its a 3.8 v6 when im pusin 70 my rpms are at 2 is that norm it kind of feels like its shifting hard on the down shift at 40 mph
Yeah my car has a trans from a mustang, there really good ones. My first thought about hard downshifts would be a trans filter. Mine kinda acted like that and a new filter fixed it.

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Last edited by speaker_king; 03-03-09 at 06:09 PM.
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