Air pump eliminator
Thread Starter
Instructor
Joined: Nov 2004
Posts: 190
Likes: 0
From: Greenville Ohio
St. Jude Donor '05
Air pump eliminator
Two questions about the air pump eliminator.
Do you have to have a true dual exhaust car for this item?
What does the air pump actually do?
Thanks Roger
Do you have to have a true dual exhaust car for this item?
What does the air pump actually do?
Thanks Roger
Melting Slicks
Joined: Dec 2004
Posts: 3,219
Likes: 1
From: Somerset Co, NJ
The A.I.R. , or Air Injection Reaction system, which includes the pump, is an emissions control system which helps reduce Hydrocarbon, Carbon Monoxide and NOX emissions. It causes the catylytic converter to heat up quickly, which helps control the emissions. The pump runs on startup for about 3-4 mins whem the engine's ECM is in the open loop, after this period, the ECM is in closed loop, and the pump is off. Look at a repair manual for details.
About the dual exhaust, I don't think you need it because Ive seen air pump eliminator pulleys for '84-'91 models, which don't have a true dual exhaust. Only '92 and up has true dual exhaust, so you should be ok! Actually, my pump is acting up, and whistling, I can't find an eliminator for my LT1. As far as passing emissions, it seems to be ok, because its only operating for a few minutes after startup. Hope this helps!!!
About the dual exhaust, I don't think you need it because Ive seen air pump eliminator pulleys for '84-'91 models, which don't have a true dual exhaust. Only '92 and up has true dual exhaust, so you should be ok! Actually, my pump is acting up, and whistling, I can't find an eliminator for my LT1. As far as passing emissions, it seems to be ok, because its only operating for a few minutes after startup. Hope this helps!!!
Melting Slicks
Joined: Dec 2004
Posts: 3,219
Likes: 1
From: Somerset Co, NJ
Forgot to add!! The pump actually pumps air from the air cleaner into the exhaust manifolds through the exhaust, basically. For a real sequence of operation, consult a manual, or do a search...
Team Owner
Joined: Sep 2001
Posts: 62,160
Likes: 1,733
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
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Its intention is only to heat up the cats and get them working quickly after startup, once the engine is hot, the AIR does nothing for emissions.
No, you do not need duals.
No, you do not need duals.
