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Old 08-09-2019, 10:35 AM
WDBCB20 WDBCB20 is offline
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Join Date: Apr 2006
Location: South Florida
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Quote:
Originally Posted by 97 SL320 View Post
If you are not concerned about originality there are many generic options. All you need to do is figure out the valve pattern: what port leads to what other port when solenoid is on / off.

For something like an intake flap / AIR pump diverter valve. What I'll call port A goes to a vacuum source , B goes to what you want to operate and C goes to atmosphere.

Assuming power to the solenoid = what you want to operate is on. Ports A and B are connected , port C is blocked.

No power to sol = item off. Port A is blocked , Ports B and C are connected ( this bleeds off vacuum at item B.

By the time you've found something that works and fits or have made it fit plus its price/shipping might as well have bought the stock item. Hence the question still stands: what goes wrong -wears out or breaks- inside the old valve and can it be fixed?
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