Smog pump noisy
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Junior Member
Joined: Dec 2006
Posts: 59
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From: LaCrosse Wis.
Car: 1990 Iroc Z Red Vert
Engine: 305 TPI
Transmission: Auto
Axle/Gears: Stock
Smog pump noisy
I have a 87 350 TPI Iroc Z. The smog pump is noisy any sounds like is rattles. I can actually here it through the firewall when engine is running. Is it shot? or can repair it? I suppose I cannot take the belt off to disable smog pump. Any help would be great. THANKS JIM
Supreme Member
Joined: Jul 2009
Posts: 2,328
Likes: 10
From: Kitchener, ON
Car: 1988 GTA
Engine: LB9
Transmission: T5
Axle/Gears: 3.45
Re: Smog pump noisy
It's likely shot. The A.I.R. pump has some flimsy vanes inside that can rattle. I replaced a noisy one with a rebuilt Cardone unit and it's been good.
There is a way to remove the pump and re-route the belt, but I'm not sure how.
There is a way to remove the pump and re-route the belt, but I'm not sure how.
Supreme Member
Joined: Sep 1999
Posts: 7,072
Likes: 13
From: Philly, PA
Re: Smog pump noisy
Yeah, it's likely just worn out inside. They get noisy, then they fail.
Fortunately on an 87 it's a separate belt that turns just the smog pump off the water pump pulley. You can remove the belt and/or remove the whole air injection system, if you want (only needed for emissions). The computer does not monitor it's functioning at all.
Fortunately on an 87 it's a separate belt that turns just the smog pump off the water pump pulley. You can remove the belt and/or remove the whole air injection system, if you want (only needed for emissions). The computer does not monitor it's functioning at all.
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