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10/09/2021 2:47 pm
Topic starter
Hello,
I have an e38 from 2001, it's throwing the p0491 code and in the first few minutes it sounds like a crazy vacuum or belt. then it quiets down once the car warms up. Is this just the secondary air pump that needs to be replaced? Should I also replace the air valve and the hose connected to it? I'm just throwing ideas up in the air. Also how bad is this? Is this something I need to fix right away? Can I drive it at all until it gets fixed? What else should I check/replace while doing this job to help the overall system?
1 Answer
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10/09/2021 4:17 pm
You might have to get this repaired right now. Your car may have a leak.
https://www.obd-codes.com/p0491
