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Re: Need help: Secondary Air Pump Failure (archive)

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Posted by James on September 11, 2001 at 07:40:18:

In Reply to: Need help: Secondary Air Pump Failure posted by Manoj on September 10, 2001 at 12:32:12:


I have been getting a check engine light after 55K miles. My independent mechanic has read the fault codes as being related to the secondary air pump and tells me this is there to pump in extra air during cold starting. Although this is a very competent shop, they feel it's likely too big a job to be worthwhile, and recommended only clearing the fault code periodically. Apparently water gets in to the system over time from condensation or some such thing, and the secondary pump is not really needed for most operation. Does anyone have any experience with this? Is there anything else I can do to clean the system out? Any help is appreciated.
--Manoj
'97 Dinan M3

Mine makes a hell of whir on start up, and vibrates like heck when in operation. It usually shuts off after a minute or so. One Inde BMW mechanic said that it is by no means unusual for them to fail and another said that the bearing is going and that is why it is noisy. The BMW center ofcourse run 'a test' on it and didn't find anything out of the ordinary - what to do - a few hundred miles left on the warranty and this will obviously go 5000 down the road when the warranty has expired?? How noisy should these be on start up - you can hear mine quite clearly sitting in the car with all windows up?? Related other experiences would be appreciated.



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