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Voltage to Duo valve

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Old May 1, 2008 | 03:23 PM
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Gman91932
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From: Imperial Beach CA
1995 S320 and 1995 S500
Voltage to Duo valve
I replaced the Duo valve twice and still no heat. Is the a issue with the computer or voltage to the duo valve?

Gman
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Old May 2, 2008 | 03:23 AM
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Peter Guenther's Avatar
Peter Guenther
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From: Fl
92 500sel/01 320e wag
The Duo valve is open by default, try and unplug, is there heat at the hoses?
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Old May 2, 2008 | 06:00 PM
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Gman91932
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From: Imperial Beach CA
1995 S320 and 1995 S500
Ac control unit and duo valve!!!!!!1?
I took the car back to the dealer. They now tell me it is is both the AC Control unit and the DUO valve. They say the correct voltage not going to duo valve.

Any suggestions??????????????

Gman
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Old May 3, 2008 | 05:01 PM
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Peter Guenther's Avatar
Peter Guenther
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From: Fl
92 500sel/01 320e wag
I would find another dealer, or good independent, the duo shuts off the flow. I would think it would be stuck open since it needs power to close. you might take the other off your car and exchange them
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Old May 4, 2008 | 11:38 AM
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Gman91932
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From: Imperial Beach CA
1995 S320 and 1995 S500
I agree
Can I forgo the a/c and just get heat? Also can the little motor or computer next to th duo valve be replaced (only read about this, never seen it)

I am in So-cal any ideas for an good AC independant?

Gman
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Old Dec 6, 2009 | 11:56 AM
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waderamsey
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1995 S 420 w140
No Heat
Hey Gman. Did you ever solve your no heat problem? I've got a similar one, but only on the driver's side.

Thx,

Wade
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