Need help with AIR system
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5th Gear
Joined: Feb 2009
Posts: 5
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Need help with AIR system
The Corvette is a 1990 6 speed. Recently just overhauled and rebuilt for a customer. In the process of putting everything back together ran into a problem with hooking up the AIR system properly. The Air system is a black pump that sits next to the AC condensor and has hoses branching off to both the exhaust manifolds and to a steel pipe going back to the cat. Im courious if anyone knows how this system is suppose to be routed? on the pump theres a T splitter and on the pump its self has 3 inlet holes for hoses. Anything pics, diagrams, advice..
Thank you
Thank you
Race Director
Joined: Nov 2003
Posts: 12,221
Likes: 446
From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
The AIR system pumps air into the exhaust manifolds during warm-up, then to the cat (via steel tube) when warm. (I believe the interval before switch-over is 5 minute when cold, or 1-minute when warm.)
(There is a metal tube on the front of the motor which provide air for opposite manifold.)
AIR can also be diverted to the "silencer" portion of the divertor under certain conditions. Hopefully, the following excerpt from Agent86 will answer any other questions you might have.
AIR System PDF
(There is a metal tube on the front of the motor which provide air for opposite manifold.)
AIR can also be diverted to the "silencer" portion of the divertor under certain conditions. Hopefully, the following excerpt from Agent86 will answer any other questions you might have.
AIR System PDF
Just curious if there is any online links to a 1990 FSM (factory service manual) ?
Race Director
Joined: Nov 2003
Posts: 12,221
Likes: 446
From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
There are a few PDF's available here/there -- if you know where to look.
For a question/two, people here will help. A page/two is easy enough to scan/post. I believe the link I posted is from a FSM.
For extensive use, buying one will serve you better. Notice a forum member is selling FSMs in C4 ForSale section. Also, on eBay too.
