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Jetta hissing sounds, turbo related? - Biodiesel in California [entries|archive|friends|userinfo]
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Jetta hissing sounds, turbo related? [May. 8th, 2008|08:50 pm]
Biodiesel in California

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Just wanted to get people's opinions on this problem I'm having with my 2001 Jetta TDI with 120,000 miles and running B100, and to see if the price I was quoted to have it fixed sounds like it's in line.

My Jetta emits this loud "hissing" sound when I accelerate up a hill, and it sounds like it's tied into the turbocharger. I don't seem to have any loss of power, and my mileage hasn't changed, but occasionally my Jetta goes into "limp mode" where the turbocharger stops running and I can barely crawl home at 40-50 MPH.

I took it to a mechanic, and he could find no codes on his VAG-COM computer, but he said that the "turbo actuator" has gone bad and only moves a fraction of an inch where the linkage should move more like a couple inches. So he's saying that my Jetta's overboosting, and the hissing sound I hear is the extra pressure escaping. He quoted me $580 for a new actuator, and $400 for the labor to install.

Does this sound par for the course? Anyone have any opinions?
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