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1982 928S
Join Date: Oct 2010
Location: Las Vegas, NV
Posts: 207
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no air from middle vents
Hey guys, after replacing the heater valve, no more hot air,air condition is nice and cold, but doesn't blow from middle vents. any ideas. ED.
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02-12-2011, 06:34 PM
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Registered
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First thing is to check the lines that open the vents and such. They may have a leak or may have come off the fittings
__________________
 Warning - I play with Porsche's 1970 -914 / 1982 -911 1984 -928 / 1987 -928 |
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02-19-2011, 05:40 PM
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Petie3rd
Join Date: Jul 2000
Location: Philly PA
Posts: 4,528
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go to 928gt.com and on page 2 under tips and links find Wallys HVAC system repair
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^^^ Stan ^^^ 2019 BMW K1250 GS 2016 HD RK 1988 S4 Auto , Elfenbein Perlglanz, Pearl Gray 1982 5sp Met black and tan sport seats |
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02-19-2011, 08:12 PM
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Yup, Wallys website is a huge help. Are you sure you didn't bump an old vacuum line and cause a leak? If it worked before you did the Heater Valve, then I bet this is what happened.
Buy about 20 feet of 3mm vacuum line and start replacing that old stuff under the hood. I bought the Silicone stuff as it also comes in different colors. I put Blue stuff in the Euro, but stayed Black in the "S."
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1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD** 
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02-20-2011, 04:37 AM
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1982 928S
Join Date: Oct 2010
Location: Las Vegas, NV
Posts: 207
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no air from cntr vents
Quote:
iam geeting hot air again. seems i have another problem here further down the line. please advise. ED. |
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02-20-2011, 03:57 PM
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Like I said, seems like you broke a vac line somewhere. Try and put some vacuum (with a vacuum tester) to your new heater valve. You should get no more heat in the vents.
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1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD**
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02-20-2011, 04:01 PM
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Registered User
Join Date: Jan 2011
Posts: 13
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same problem here...
turns out i have some leaks in wither actuator diaphragms or lines leading to diaphragms. go to the page listed or Dwane's garage write ups.. they are great at walking you through the troubleshoot. |
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02-20-2011, 04:36 PM
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Yup, went through all mine and it ended up being in the Soleniod area under the Center Console. I ended up just blocking all vacuum lines at engine side firewall till I get motivation to tear into that area.
Make sure you run a vacuum line (all time) so you wont get any hot air inside the car.
__________________
1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD**
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02-20-2011, 04:45 PM
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Turtle
Blitzkrieg
