2nd Generation Specific 1986-1992 Discussion

Air Pump Q

Old 03-27-2005, 05:37 PM
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What exactly is the purpose of the air pump, assuming the car is completely stock?



Trying to get an idea on what exactly that thing does.



TIA



-G
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Old 03-27-2005, 07:10 PM
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[quote name='sin_02' date='Mar 27 2005, 03:36 PM']What exactly is the purpose of the air pump, assuming the car is completely stock?



Trying to get an idea on what exactly that thing does.



TIA



-G

[snapback]691573[/snapback]

[/quote]



uh if i remember right, on an S4 it basicly serves no purpose and you can remove it... on an S5 you need it to open the 5th and 6th ports so its gotta stay... there's a write up of it in the faq sections just above this if you go in and take a look
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Old 03-27-2005, 07:42 PM
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Air Pump pumps air into the catalytic Converter so it operates properly, without it the cat burns up. (short version)
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Old 03-27-2005, 08:46 PM
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[quote name='banzaitoyota' date='Mar 27 2005, 05:42 PM']Air Pump pumps air into the catalytic Converter so it operates properly, without it the cat burns up. (short version)

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yep and in so doing it also makes the car pass smog
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Old 03-27-2005, 10:19 PM
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Hell I dont have the cats anymore so I guess the pump goes bye bye now.
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Old 03-30-2005, 08:02 AM
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Also you can pull & block off the ACV & remove it's exhaust pipe.

Another function of the S4 air pump is to supply the anti-afterburn valve in the ACV unit.

So now it will be - whiiiir - PSSSHH - pow - whiiir - PSSHH - pow!



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