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jmarkoa
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the head, Can you describe what the open valve sounded like? My 04 turbo with 100K started making a "thumping" noise; not really like a rod beginning to knock, but similar. No check engine light so no code to report, just a noticeable low pitched thumping only at idle speed. It seemed to come and go for a few weeks, then became a constant nuisance. I took it to the dealer for my 100Kcheckup, they said it sounded like an open SIA valve on the drivers side. They quoted $700 to replace it, and I am considering just doing it myself. Were you able to remove the broken plastic pieces and free up the valve, or did you just replace it? If replaced, how much? The cheapest I could find was $125. From your post above, it sounds like it may be a quick fix? BTW, the dealer said they have never done one, this would be their first one. Great photos of the air pumps!! Were you able to snap any of the valve or its location? Thanks for anything additional you can add!!