can you hear the smog pump blowing air?

mach_71

New Member

Mar 7, 2004

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Jul 10, 2004

#1

• Jul 10, 2004

• #1

I have an annoying shhhhhh type of sound when accelerating, its really noticable when going over a bridge or somewhere where the sound reflects off the sides...i was wondering if maybe i am actually hearing the air blowing into my exhaust? would it hurt anything to take off the belt and drive around the block, or would it overheat that fast?

 

mach_71

New Member

Mar 7, 2004

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Jul 10, 2004

#2

• Jul 10, 2004

• #2

bump..u guys that took your smog pumps off, could you notice adifference in the way it sounded?

 

ironmedic

New Member

Mar 18, 2003

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Puyallup, WA

Jul 11, 2004

#3

• Jul 11, 2004

• #3

if you removed it completely and bypassed it with a short belt then u shouldnt hear anything.

i disconnected the lines from my smog pump (before i deleted it) and i drove around a week before my kit came in. i was doing headers and those lines were just an annoyance. so i just put a 90 degree line to point the smog pump airflow downwards. it made this pssssss noise every now and then till i deleted it completely.

 

Mustang5L5

That is…until I whipped out my Bissell

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Feb 18, 2001

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Jul 11, 2004

#4

• Jul 11, 2004

• #4

I can't hear my smog pump at all from the bottom of the trash dump it now resides

 

88stangmangt

Active Member

Nov 25, 2003

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Stafford,VA

Jul 11, 2004

#5

• Jul 11, 2004

• #5

sounds like you have a exhaust leak................ never heard of a smog pump makeing noise if all the lines are hooked up.

 

ironmedic

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Mar 18, 2003

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Puyallup, WA

Jul 11, 2004

#6

• Jul 11, 2004

• #6

mine went away after i removed the pump. i thought i had an exhaust leak too so i changed the gaskets (they were charred a bit). im using flowtech gaskets now.

 

jrichker

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Mar 10, 2000

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Dublin GA

Jul 11, 2004

#7

• Jul 11, 2004

• #7

Unless I am mistaken, the pump shuts off airflow to the cats at WOT and dumps it overboard, bypassing all the rest of the plumbing. You could be hearing the result of that bypass, or the first vacuum controlled valve after the smog pump is bad.