Put a one way check valve in the heater control vacuum source from the
engine.
All the new fuel injected stuff uses that technique. Get one from any
dealership parts counter.
|In fact when traveling in the mountains, when vacuum
|dropped below 4, the outside heater vents would open even though the AC
|was on. Then when vacuum got back up to 6, they would close. I need to
|figure out how to correct that problem. Justin
Gene's recommendation of the brake booster vac pump is also a good idea.
Mark
engine.
All the new fuel injected stuff uses that technique. Get one from any
dealership parts counter.
|In fact when traveling in the mountains, when vacuum
|dropped below 4, the outside heater vents would open even though the AC
|was on. Then when vacuum got back up to 6, they would close. I need to
|figure out how to correct that problem. Justin
Gene's recommendation of the brake booster vac pump is also a good idea.
Mark
