Noises from Driver's Side

soccer8888

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Ok, so I picked up my L about 2 weeks ago, high mileage (135k) for next to nothing. Ran like a champ all the way home (9 hr one way drive).
This past weekend I did what I always do when I buy something new, and changed the oil, brake pads and flushed the brake fluid.

Then I started it up a day later and upon cold start up I was hearing what at first sounded like rubbing noises. These went away after about 5 seconds, and it drove normally with no issues. The noise isn't squeaky, I'm having a hard time putting it into words which has made searching for the issue in previous threads a bit of a chore. Its a deeper noise, very cyclical, and does NOT change frequency with engine RPMs.

It has progressively gotten worse/louder, and now makes the noise when under normal load. If I coast, it stops after a few seconds, and if I accelerate halfway decently (not pulling a vacuum), it stops too. I'm thinking a vacuum leak somewhere, as it sounds like a hose thats maybe come off, or has a split in it.

Any ideas? I know I've given a relatively cryptic description, but short of a video, I'm not sure how else to describe it. I see no loss in power, or roughness of idle or any sort of performance degradation...so I'm really at a loss here.

A vacuum diagram would be nice to have, even if that doesn't solve this problem. Thanks in advance!
 

soccer8888

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Cleaned the IAC out and it ran like a champ...for about 20 minutes, and then intermittently started doing the same thing. Looks like its time for an oil separator....
 

soccer8888

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No dice there either...put oil separators on both sides and it still does it. Nobody has any suggestions/ideas?

Does anyone have a hi-res picture of a stock passenger side of the engine? I bought it with a breather on it where I believe the oil cap was, but I'm not sure what the factory setup looks like.
 

funair02

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I haven't heard that on my L...but I did have a 92 G20 that had a bad EGR that sounded and acted very similar...

good luck
 

soccer8888

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Any way I can check on this without doing the delete or replacing the thing? I've never heard an EGR make noise before. Thanks for the help guys!
 

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