Heater control valve issue in a 1997 Aerostar with A/C.

speleopower · 05-16-2012, 09:04 PM

As an FYI my "backward" mounted vacuum servo has been working perfectly fine for almost a year. The only thing I did was unscrew the vacuum piece and mount it the opposite way. The actual tubes are facing the original direction.
-Scott

asavage · 05-16-2012, 09:41 PM

It looks as if the vacuum servo can't be un-mounted from the valve on at least one version of the assy. Good to know that some of them can be re-configured. Thanks for the update.

Adam_tinkerer · 06-13-2012, 09:15 PM

I'm glad I checked in here before trying to replace the valve on my 95! Now, my van has rear heat, so I'm wondering if it's still the same valve. Really, I want to bypass the rear heat anyway, as the van's been converted to permanent work duty. -adam

asavage · 06-13-2012, 10:16 PM

AFAIK, all Aeros '94-on have this valve, regardless of whether it has rear heat or not.

'93 and earlier don't have a valve to the front heater core.

All with rear heat have a valve for that rear core, located under the van behind the driver's seat area.

05-16-2012, 09:41 PM	#22
asavage Wannabe Elite Explorer Duvall, Wash. Join Date: Jan 2011 Posts: 24 Vehicle Specs	It looks as if the vacuum servo can't be un-mounted from the valve on at least one version of the assy. Good to know that some of them can be re-configured. Thanks for the update. __________________ Regards, Al S. 1997 XLT, extended, 4.0l AWD, 141k miles (Sep12) 1993 XL, extended, 3.0l, 204k (sold to a friend) 1989 XLT shorty, 3.0l, 232k miles (sold) Last edited by asavage; 06-13-2012 at 10:12 PM.

06-13-2012, 10:16 PM	#24
asavage Wannabe Elite Explorer Duvall, Wash. Join Date: Jan 2011 Posts: 24 Vehicle Specs	AFAIK, all Aeros '94-on have this valve, regardless of whether it has rear heat or not. '93 and earlier don't have a valve to the front heater core. All with rear heat have a valve for that rear core, located under the van behind the driver's seat area. __________________ Regards, Al S. 1997 XLT, extended, 4.0l AWD, 141k miles (Sep12) 1993 XL, extended, 3.0l, 204k (sold to a friend) 1989 XLT shorty, 3.0l, 232k miles (sold)

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05-16-2012, 09:04 PM	#21
speleopower Wannabe Elite Explorer cocoa bch 1997 Aerostar Join Date: Dec 2010 Posts: 84 Vehicle Specs	As an FYI my "backward" mounted vacuum servo has been working perfectly fine for almost a year. The only thing I did was unscrew the vacuum piece and mount it the opposite way. The actual tubes are facing the original direction. -Scott

06-13-2012, 09:15 PM	#23
Adam_tinkerer Wannabe Elite Explorer Newton, NC 1995 Aerostar Join Date: May 2011 Posts: 35 Vehicle Specs	I'm glad I checked in here before trying to replace the valve on my 95! Now, my van has rear heat, so I'm wondering if it's still the same valve. Really, I want to bypass the rear heat anyway, as the van's been converted to permanent work duty. -adam