How many vacuum valves are there in the HVAC
03-26-2006, 01:14 PM
#16
Rennlist Member
Originally Posted by Ron V
Doc thanks for the write up, I'm in the middle of doing this. So far I have the Center console out, can see two of the actuators, and was pondering what to do next. This is great. I do need to make a beer run though.
With a vacuum pump you can check the defrost (green line) flap, the recirc (blue line) flap and the heater valve (white line) as well as the vacuum input (black line) which with the engine running should be supplying 15-20 in Hg.
Hopefully the tests verify all's well and you back on the road ASAP.
03-26-2006, 06:35 PM
#17
Race Director
Greg
Actually on the older 928's they have 6...with a two stage center setup? I'm not sure at what MY they switched to the 5 that all the newer cars have?
Actually on the older 928's they have 6...with a two stage center setup? I'm not sure at what MY they switched to the 5 that all the newer cars have?
03-27-2006, 12:33 AM
#18
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Malcolm,
thanks for the info. I checked all of the lines a while back and found two that were leaking. I figured if I'm going through all of the trouble of pulling out the center console, I might as well replace all of them. As i recall it was the green and blue lines that leaked.
thanks for the info. I checked all of the lines a while back and found two that were leaking. I figured if I'm going through all of the trouble of pulling out the center console, I might as well replace all of them. As i recall it was the green and blue lines that leaked.
