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#1
05-01-2009, 12:29 AM
Hummer Expert
Join Date: May 2007
Location: PHOENIX AZ
Posts: 681
Re: Whistle Intake manifold?
never heard one whistel the useualy just hiss .if you have a vacume leak your MIL light should come on and give you a lean misfire bank 1 lean,bank 2 lean. it is not uncommon for the intake gasket to leak at that mileage. get a spray bottle of water and go and find the leak if there is one . spray the water aroung and if the idle changes Bingo you found it .
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Last edited by IRA51 : 05-01-2009 at 12:35 AM.
#2
05-01-2009, 12:43 AM
Hummer Veteran
Join Date: Jul 2003
Posts: 44
Re: Whistle Intake manifold?
yep, had the code for lean bank , so, just spray water around the gasket and listen for idle change?
I'll check that out first, and then it looks like I have to pull the manifold and redo the gasket.
I am going to guess that a shop is going to charge a bunch of labor for this? so DIY
#3
05-01-2009, 02:32 AM
Hummer Expert
Join Date: Sep 2007
Location: Mason, OH
Posts: 779
Re: Whistle Intake manifold?
I did mine this winter. I have an 03, It had 83K miles on it at the time. Go Ahead and do your fuel injector O-Rings as well.
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