Quote:
Originally Posted by theOkilla
Quote:
Originally Posted by Bimmer_Bro
I would start with boost solenoids. Those are very old if they are original. It's a common maintenance item and it could very well solve your issue. Do vacuum lines as well if you haven't already.
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Okay, I replaced every vacuum line with nicer high heat resistant silicone ones and I don’t see any issues with those. I have owned the car since 85k miles and don’t see boost solenoids in the service history. I’m 90% sure they’re original. I ordered two new ones so I can try those first. |
It's a good place to start. Would be hard to diagnose anything else until you can rule those out. Report back once installed.