V6 Discussion and questions about the base carbureted or MPFI V6's and the rare SFI Turbo V6.

87 Firebird Noise

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Old 11-03-2013, 08:29 PM
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Car: 1989 Formula Firebird
Engine: 305 TPI
Transmission: 5-speed
Axle/Gears: 3:45
87 Firebird Noise

When the car is cold and when I go 45mph or faster I'm hearing a loud noise a mechanic said that it sounds like the air pump. After about 15 min. of driving it goes away. Replaced the air pump 2 years ago. Is there a way to bypass the pump? Not sure what to do.
Old 11-04-2013, 05:07 AM
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Car: 1991 Camaro RS
Engine: BBC 509 Merlin ii 9.6:1 pump gas
Transmission: ATI pro th350 sfi case. TSI 5500 st
Axle/Gears: Strange S60 4:10s
Re: 87 Firebird Noise

Yes you can remove it and plug the air line. Then you would have to get a different serpentine belt and reroute the belt.
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