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- From: rdi@cci632.cci.com (Rick Inzero)
- Newsgroups: rec.autos.tech
- Subject: Re: WHAT IS AN A-I-R PUMP ON A CHEVY CAPRICE ENGINE?
- Keywords: A-I-R PUMP, CHEVY
- Message-ID: <1993Jan26.202142.2359@cci632.cci.com>
- Date: 26 Jan 93 20:21:42 GMT
- References: <1993Jan20.170415.5141@porthos.cc.bellcore.com> <m_j35=r@rpi.edu>
- Distribution: na
- Organization: Northern Telecom, LTD, Rochester, NY
- Lines: 43
-
- In article <m_j35=r@rpi.edu> maessm@rpi.edu writes:
- >
- >The air pump does exactly what its name implies - it pumps air! :)
-
- Nobody's posted this yet, so here goes:
- AIR stands for Air Injection Reactor (system). It was introduced on
- Chevys in 1967, mandatory for California cars, optional on others.
-
- >Its purpose is to pump air into the exhaust system, either into the exhaust
- >manifold or into the catalytic converter, to make the converter work efficiently.
-
- At that time, it injected air into the exhaust manifold, very
- close to each exhaust valve, so that the exhaust gas would
- continue to burn for a while once it left cylinder, reducing exhaust
- emissions. There were no catalytic converters at this time to worry
- about.
-
- On 1967 AIR equipped cars, the carburetor, air cleaner, and exhaust
- manifolds, and other miscellaneous parts were different than on
- non-AIR cars, and the factory tune up specs were also different
- (different idle speed, etc.). Whether or not the car had AIR was also
- noted in the engine block code, which showed the engine assembly plant,
- date, cu in, and transmission as well.
-
- ---
- Rick Inzero, President of the "Put The High Beam Switch Back On The Damn
- Floor, Where It Belongs Society"
- rochester!cci632!rdi
- Northern Telecom LTD uunet!ccicpg!cci632!rdi
- Rochester, NY rdi@cci.com
-
- -REAL cars have:
- vent windows
- side air vents down by your feet
- the high beam switch on the floor (the way nature intended)
- rear-passenger side windows that roll ALL THE WAY down
- doors that unlock with the ignition key
- doors that lock only when you hold the outside button in
- an engine with over 340 lb.-ft. of torque
- an engine with a NAME, like "Turbo-Jet" or "Super Commando"
- available *optional* power steering; powerful enough to
- enable you to parallel park using only 2 fingers
- :-) :-) :-)
-