Please identify this part on '04 S80
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That switch is for the vacuum pump that should come on/buzz when there is little or no vacuum in those hoses. Turn key on, (don't start car) apply foot brakes a few times, the brake booster will use up the stored vacuum and the pump should come on to supply more - it's chrome, ~3 inches in diameter and on the end of one of those vacuum lines.
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That switch is for the vacuum pump that should come on/buzz when there is little or no vacuum in those hoses. Turn key on, (don't start car) apply foot brakes a few times, the brake booster will use up the stored vacuum and the pump should come on to supply more - it's chrome, ~3 inches in diameter and on the end of one of those vacuum lines.
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Turn key on, (don't start car) apply foot brakes a few times, the brake booster will use up the stored vacuum and the pump should come on to supply more - it's chrome, ~3 inches in diameter and on the end of one of those vacuum lines.
Last edited by JamieWelchahhh; Mar 17, 2025 at 01:17 PM.
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