Question about Audi A4

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I have a Y plated A4 TDi the turbo seems to die after a while. starts off fine, within 20 minutes i lose power and the turbo dies

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Common problem with VNT turbo's fitted to audi's is sooting up of the variable nozzles of the turbo. this causes the the actuating ring inside the turbo to jam, the engine managment senses this and goes to emergency running mode, ie low power. You can clean turbo VNT housing if your a bit handy with the spanners but this involves removing unit from the car and cleaning housing, actuator ring and vanes on the exhaust side of the turbo with scotchbrite. You dont have to dismantle the impellor but you do still have to keep every thing really clean. Another cause of power loss is the air flow meter so you may want to check that out before taking your motor to bits.

Posted on Jul 03, 2009

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Posted on Jan 02, 2017

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shauunswbc@aol.com

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