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Re: will check...but if it is the heater bypass valve.... Posted by saabsince 93b [Email] ![]() ![]() ![]() In Reply to: Re: will check...but if it is the heater bypass valve...., three_jeeps, Mon, 3 Jul 2017 15:18:42 Members do not see ads below this line. - Help Keep This Site Online - Signup |
the valve shuts off the hot water to the heater when the A/C is in LO or full cold. Otherwise the hot water flows through the hot core and the flapper valves just direct the air to the cold heat exchanger for cold or the hot heater one for hot.
Absolutely no change in heating in winter.
It is a close to useless valve that GM put in the USA models only.
You need the upper line and a straight piece of heater hose for the bottom line. It does not matter which hose goes where because the hot water is flowing through there all the time.
->Posting last edited on Mon, 3 Jul 2017 15:47:04.
_______________________________________ NOW OWN: 2000 95 Imola Red Aero 5 door stick - my ride HAVE OWNED: 2003 95 Black Aero 4 door auto Mary Ann's car 2004 95 Black Aero 5 door wagon 2001 95 Silver Aero 4 door stick 2001 95 Silver Aero 5 door wagon automatic 1999 95 Combi stick 1997 9000 Aero stick red 1988 900 SPG black 1988 900 Convertible black 1985 900 3 door turbo spg kit silver 1979 900 3 door turbo early 900 production 1966 96 2 stroke red 1960 95 wagon red 1959 93b light yellow
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