HELP! Car over boosting!

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Jan 9, 2009 | 02:57 PM

#16

sparky

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From: Mesoamerica/ SF Bay Area

Exactly which line is cut? Are you hooked up to the turbo´s compressor discharge nipple, or the WGA/DV line for boost reference source? (The reference line is the one that goes to the bottom port of the MBC).

It´s cheap so buy a couple of yards of 4mm vacuum hose(windshield wiper hose will work as well). Replace both hoses and secure all four fittings nice and snug with zip ties.

Last edited by sparky; Jan 9, 2009 at 03:00 PM.

Jan 9, 2009 | 05:29 PM

#17

lost spyder

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From: PA/NJ

It doesn't matter much which line it is. Either one will make him overboost. And if you're going to replace one side of it might as well do the other.

Jan 9, 2009 | 08:07 PM

#18

racer135

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From: Puerto Rico

Quote:

Originally Posted by lost spyder

Did you try running line pressure? Route the vaccum line straight to the wastegate. That'll narrow it down between the gate or the mbc. If this fixes it then your mbc is shot. If it doesn't then your actuator is stuck. Or if you have the means, just hook a blow gun from a compressor to the vac line and see if the actuator moves.

This is all you need to do to determine what is the problem. Anything else is just guessing.

Jan 9, 2009 | 08:12 PM

#19

sparky

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From: Mesoamerica/ SF Bay Area

Quote:

Originally Posted by racer135

This is all you need to do to determine what is the problem. Anything else is just guessing.

No, first he needs to replace his torn boost hose(s)!

Jan 9, 2009 | 09:00 PM

#20

worksevo89

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From: Eureka, CA

so i taped up the line just for tonight. Boost is back to normal. So that was it. Im changing out the lines tomorrow morning. Thanks guys for everything.