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Re: Anyone else noticed lower quality of heater bypass valves?
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Posted by PGAero [Email] (#1143) [Profile/Gallery] (more from PGAero) on Wed, 8 May 2019 08:50:58 Share Post by Email
In Reply to: Anyone else noticed lower quality of heater bypass valves?, NCCaniac [Profile/Gallery] , Wed, 8 May 2019 06:50:52
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I've installed two (two different cars) in the past couple of years.

Each one had an issue sticking "closed" and not letting hot coolant through the heater core. In one case, I simply disconnected the vacuum line to leave it open, and in the other case (current car) I'm going to see how it evolves. Heat works fine on cold mornings, but doesn't always come back if the interior warms up while parked, and the system calls for the valve to bypass the heater core in "cooling" mode.

I may very well just bypass the whole thing if it continues into the fall when we will need heat regularly.

I do find it interesting that both new valves have had an issue with sticking.

~Peter
_______________________________________
Past:
'06 9-5 Combi, AT, Polar/Black
'04 9-5 Aero Wagon, AT, Nocturne/Granite
'03 9-5 Aero Wagon, 5spd, Polar/Black
'03 9-5 Aero Wagon, AT, Steel/Charcoal
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'93 9000 Aero, 5MT, Cirrus/Black (Owned this one twice... my favorite)
'86 900 SPG, Edwardian/Buffalo Grey
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