daza_mate

there is a sensor on the thermostat housing on an ea falcon mpi, its not the coolent temp sender or the dash temp sender, its the one with 2 vacume lines coming off it, does anyone know what it does? what would the consiquences be if the vacume lines anrnt connected

bowsaw

Is it black plastic? one line sitting above the other?

Dellboy999

trace the vacuum lines, you will see why it is needed when the temp goes up.

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daza_mate

i dont think its plastic, its red, but the old one i pulled off was pink, its just a thing that screws into the thermostat housing, so its temerperture related somehow and it has 2 vaccume lines connected to it.

daza_mate

yes i tried to trace one of them but it goes off behind the firewall somewhere and its a nightmare to trace the other one i was just hoping someone knew off hand what the thing does

Dellboy999

Well if there is no answer by morning, I will check the gregorys.

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Aussiblue

It the PVS valve. It changes the air conditioning air inlet mode from fresh to recirculation when engine overheating is imminent. This reduces the load on the compressors and thus the load on the overheating engine. PVS= Ported Vacuum Switch.

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Regards Blue

daza_mate

thanx for that, i couldnt find any documentation on it anywhere, where did you get that info from?

Aussiblue

Air con section of factory manual.

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Regards Blue