280SE 4.5 changeover valve - Mercedes-Benz Forum

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post #1 of 1 (permalink) Old 08-14-2008, 01:30 PM Thread Starter
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Date registered: Jan 2006
Vehicle: 73 280SE 4.5, 71 300SEL, 03 BMW Z4, 72 Fiat 850, 80 Triumph TR7, 85 Porsche 911
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280SE 4.5 changeover valve

Can anyone tell me what the changeover valve does? It's my understanding that after the engine warms up, this thing switches the computer to different settings. It's a vacuum actuated switch, located on the passenger side fire wall...

If mine is bad, what kind of symptoms might I be having? And how would I check to see if it works correctly or not?

Last edited by Grubeguy; 08-14-2008 at 01:32 PM.
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