Noisy compressor

Dyon · May 8, 2012

Hi,

I've just became a member of this forum and I have a question about a recent problem with my P38.

When I used to start the car the compressor always made a soft 'humming' noise. This humming noise was also heard during driving sometimes but always for short periods of time.

Since yesterday the humming noise changed to a much louder and rather irritating noise.

Does this sound familiair to anyone?
All help is welcome, thanks.

Stufer · May 8, 2012

Welcome

Probably EAS compressor or brake accumulator. How long does the noise last for? Any air spuspension problems? Need a few details ...

wammers · May 8, 2012

If it's the EAS compressor that has gone noisey check that the rubber mounts are sound. They do tend to split and fall apart. The compressor can also get very noisey if the bearing retainer on the brush end of the motor breaks up.

Datatek · May 8, 2012

If the noise was when you start the car, I would bet it's the hydraulic pump for the brakes. Could be air in the system or the motor on the way out.

Salisbury Nick · May 8, 2012

Do you lose pressure in the suspension system overnight or when parked for a while? EAS pumps can become stressed if they are working frequently to top up a leaky system. You would know because the car will drop overnight to a very low level, possibly in just one corner. Also, lift the bonnet before you start, the AES pump is on the passenger side near the front of the engine bay under a plastic housing - listen there and see if that is where your noise is coming from.

Noisy compressor

Dyon

New Member

Stufer

Well-Known Member

wammers

No longer with us, RIP

Datatek

Well-Known Member

Salisbury Nick

Well-Known Member

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