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Car Forum / Volkswagen / Water Cooled Volkswagen Cars / May 2007loss of turbo boost, hgissing noise
2002 passat tdi 130 5 speed . loss of turbo boost, hissing noise. I have removed all flexible hose's and inspected them for splits and leaks. non found. Reconnected all hose's accept for the one that connect's to throttle body. Ran engine boost pressure develops block off no sing of any leaks and plenty of pressure. Is it possible this may be a common fault with the passat????easy fix ????? any body any idea's?? > 2002 passat tdi 130 5 speed . > loss of turbo boost, hissing noise. [quoted text clipped - 4 lines] > Is it possible this may be a common fault with the passat????easy fix > ????? any body any idea's?? The hissing must be a leak somewhere. Can you get someone to blip the throttle while you listen under the bonnet? That will not work. You'll never get any boost in neutral. You need some load to get the turbo going. Check all the pipe work between turbo exhaust and intake manifold. Maybe a damaged ic. SFC >> 2002 passat tdi 130 5 speed . >> loss of turbo boost, hissing noise. [quoted text clipped - 8 lines] > The hissing must be a leak somewhere. Can you get someone to blip the > throttle while you listen under the bonnet? > That will not work. You'll never get any boost in neutral. You need some > load to get the turbo going. Check all the pipe work between turbo exhaust > and intake manifold. Maybe a damaged ic. I wondered if the turbo might not boost off-load. It *must* be a leak somewhere. Good point about the intercooler- could also be a hose to it. >> That will not work. You'll never get any boost in neutral. You need some >> load to get the turbo going. Check all the pipe work between turbo >> exhaust and intake manifold. Maybe a damaged ic. >> > I wondered if the turbo might not boost off-load. It *must* be a leak > somewhere. Good point about the intercooler- could also be a hose to it. Small hose to top of the intercooler. Had that prob on Golf 130 Kept on blowing off the big intercooler pipe giving no boost and lots of black smoke. don't recall hissing sound though. |
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