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question about Defrost Vacuum Valve
On my 91 300E i have the typical defrost stuck on all the time.
my question is this....the valve has 2 ports. when i apply vacuum to the port in the middle of the valve nothing happens. When I apply vacuum to the port on the very end the valve will retract. I read this is a two stage valve. How does it work? 2nd question. I have no vacuum going to the valve inside the car. Where do I need look next, vacuum switchover valve or control panel. |
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