NO BOOST HELP!!!!!!

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Apr 23, 2012 | 07:47 PM

blrman1962

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Joined: Dec 2003

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From: CT

NO BOOST HELP!!!!!!

I am driving down the highwat at 60 mph and all of a sudden the truck bucks and has a strange whooshing sound and no boost pressure I cant get the truck over 50 MPH o psi boost 2000 rpm I push the gas to 2500 2800 rpm and get 5 psi boost. I get home usr my AE no codes run all the tests no codes I tested the vacuum pump it works. I started the truck and pulled the vac line on the waste gate there seams to be no vac on that line. I had my wife rev the engine to 200 rpm still no vac on the line and no boost the turbo is spinning I pulled the intake airfilter hose off and I can see the turbo spin.
I need this truck tomorrow anyone HELP
Thanks

Apr 23, 2012 | 08:14 PM

joeyd61

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Joined: Jul 2008

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From: Dalton,Ga

have you checked the intercooler boots??sounds like you blew one

Apr 23, 2012 | 08:25 PM

bcaughhorn

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Joined: Sep 2010

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From: Grand Bay, Al

surely what it sounds like to me. and if i remember rite you dont build boost in park just reving it up. gotta have a load on it. use the pvc cap and build the test piece and blow air through it. you will hear the leak

Apr 23, 2012 | 09:30 PM

JOHN2001

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Joined: Dec 2010

Posts: 4,738

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From: Temperance, MI

Quote:

Originally Posted by bcaughhorn

surely what it sounds like to me. and if i remember rite you dont build boost in park just reving it up.

If you put it in gear and brake torque it you do but thats about it.

I agree with these guys

Apr 23, 2012 | 10:24 PM

PaysonPSD

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Joined: Nov 2007

Posts: 9,549

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From: Payson, AZ

The red line going to the wastegate actuator is a pessure line, not a vacuum line.

Like mentioned already, check the boots at the spider, below the spider and at the intercooler.