When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Hey guys, I have a 94 vette and i'm just wondering what this thing is. Its makes a loud wining noise and shuts off once the car is warmed up. It just sparked my curiosity today. Thanks
Last edited by Brenden Rogers; 11-07-2017 at 08:57 PM.
That is your Air Injection Reactor pump, A.I.R. for short. The bearings wear out or the motor can burn out on them. If you're in an emission compliance area you need to replace it. Your car will pass a sniffer without it but it is an emission device so you could fail a visual.
11-07-2017, 08:56 PM
What is this thing?
