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Peugeot 2.0 Turbo HDI problem

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kezzarooni | 10:12 Thu 22nd Sep 2005 | Motoring
2 Answers
Hi,

Being a woman, I'm getting slightly parranoid about some noises im hearing from my car and its doing my head in.

When I am driving along and im next to a wall or something that will bounce the echo from my car, I am hearing an airy kind of hissing of noise which is in sync with the usual noise from the engine. Now, I know that Turbos have fans and fans make airy noises but its not this. You can only hear the noise when I have my foot on the gas pedal and it doesnt matter how fast or how slow i am going.

Also, when I change gear I am hearing (sometimes) a slight metal dull tinging kind of noise (Im sorry but it is hard to explain - if I knew how to add an actual sound thing to this I would let you all hear my car)

Well, a couple of weeks back, I was sitting around in traffic on my way to work and all off a sudden I am hearing a really really loud banging noise from under the bonnett, as I started to drive off to try and pull aside it stopped so I carried on hoping I could manage to get to work. Later on I found that the grill had come un clipped so I presumed that the noise I heard was because it has fallen on to the fan or something behind it. (its clipped back on now)

As you can guess I never thought of anything wrong with my car until I heard the loud banging noise and so since then I am driving around with the window down and no music on listening out for further noises which is when I started hearing the other noises. I have never previously heard these noise and am just starting to get really worried as my car is my job and my life.

Has anyone got any ideas what it can be so I can pop down to the garage and not sound like a complete wolly when i tell them what Im hearing :-)

All help is appreciated

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I think you're losing a bearing or two somewhere, probably in the turbo.  Turbos generally spin at around 20,000 rpm and are fairly prone to wearing out their bearings if not lubricated properly.

Turbos have two 'fans' mounted on a common shaft.  One fan (the turbine) is driven by the hot exhaust gasses.  This in turn drives the shaft which spins the other fan (the compressor).   The compressor compresses the inlet air.  The faster the exhaust gasses, the higher the inlet air compression.  The higher the inlet air compression, the more power from the engine.  The more power from the engine, the faster the exhaust gasses, and so on.

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Hi Skids,

THats what a friend of mine thought it may be.

Well, after pulling away from the petrol station friday night on my way to the M25 my car started making a really really horrible banging / grinding noise, so pulled over and ended up getting towed home. The RAC man thought it was the power stearing pump and showed me something had been grinding in the car cause there was loads of metal dust shreds at the front left of car. Well, the car is back with peugeot now so hopefully monday when they have looked at it, they sort it.

Many thanks for your reply and i`ll bear that in mind in the future.

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