air pump?

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Jan 23, 2007 | 04:52 PM

bsecrease

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air pump?

I was looking under the hood today and i came across the diagram next to the radiator, and it has a picture of all the pullies and the surp. belt. I noticed it has a air pump on the diagram, i had never heard of a air pump under the hood before. what is it for?

Jan 23, 2007 | 05:06 PM

Nitramjr

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From: North of Boston MA

The air pump is part of the emission control system. Looks like a mini air conditioner compressor.

Jan 24, 2007 | 02:11 PM

bsecrease

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thanks for the help!

Jan 24, 2007 | 08:32 PM

Talyn

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From: Ashland City, TN

302 its down below the alternator i belive.
not sure on a 351 or a i6.

they make a bracket to replace it with just a free spinning pully.

Jan 24, 2007 | 09:06 PM

'88_F-150

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From: Pittstown NJ

Its actually an A.I.R. pump or air injection reactor it pumps air into the cat and into the heads to help burn unburnt gas or hydrocarbons

Jan 25, 2007 | 03:06 PM

XR400R

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I had two smog pumps fail within 18 months on my '95 F-150 with a 351Windsor. A short time back, the 3rd pump started making a terrible racket. I simply purchased a 94.5" serpentine belt to replace the original 102" belt & bypassed the A.I.R. pump completely.

Worked great & eliminated that terrible noise. Runs so quiet now, the neighbors no longer peek out the bedroom curtains at me when I leave for work in the mornings.