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sarahjung15
Ford BMAX Air Valve Issue
4 comment(s)
sarahjung15 (Author)
Throttle body looked okay on initial inspection, but I haven't dug deeper. Manifold pressure I can check. You think it's likely a vacuum leak over something else? I haven't noticed any stalling.
leonkoenig4
Given the mileage and your description, I'd still put my money on those damn vacuum hoses. Known weak point. If you're not seeing any other obvious issues, I'd get it to a workshop to properly diagnose the vacuum system. Better safe than sorry.
sarahjung15 (Author)
Dropped it off at the shop; you were spot on. Defective hose from the pump to the valve. Cost me 175€ to get it sorted. Appreciate the insight!
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leonkoenig4
Vacuum leak on a BMAX? Possible. Have you checked the manifold pressure and throttle body? A defective hose could definitely throw off the readings and trigger the light. Stalling at idle?