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Old 01-22-2002, 09:17 AM
Posts: n/a
had same thing on my 88 560sel - air pump was a rusted solid mess inside - put in new air pump and changed the two valves that go to it. Works fine now - you are right - it is pricey. Some say disconnect pump it won't make any difference - I wanted my car to run the way it was designed.
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