eas pump running more than usual

cfdave said:

Hi all,
Ive noticed that the eas pump seems to be running alot more when im driving the rr (95, 4.6 v8 ). I can leave the car overnight or for a couple of days and she doesn't loose height. Ive parked the car with the engine running and bonnet up listening to the pump run it runs for a while then shuts down and at the same time it sounds like a pressure relief valve releases then a few minutes later it will start again build up pressure shut down again but this time no hiss off air. Im good with the tools but this is the first eas ive had so wanted advice before i do anything.

Thanks Dave

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Datatek said:

Most likely a leak, how old are the airbags?

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wammers said:

He says no drop overnight Keith. Maybe a weak compressor or slight diaphragm leak. Blows off initially, then pressure side leak causes overheat and compressor is shutting down via thermal switch. That would be my guess.

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Datatek said:

True, but splits open and close where the bags fold under. In any case, if the bags are original they should be replaced on safety grounds.

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cfdave said:

Thanks for the replies,
Will i need to use the eas software to perform the tests in the how to section or will it be ok to do them with out it as it doesn't say?

cheers dave

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Moonfire said:

Gents

If all in good order and the RR stationary, how often should the compressor run?

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Moonfire said:

Gents

If all in good order and the RR stationary, how often should the compressor run?

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Datatek said:

It's a curious thing, but with the bonnet up, the compressor cycles on a regular basis on mine, shut the bonnet and it stops. No idea why or how this should be.

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