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en.wikipedia.org/wiki/Vacuum_modulator

Vacuum Modulator is an engine load sensing device that converts engine vacuum into a ... This article does not cite any sources. Please help improve this article ...

auto.howstuffworks.com/automatic-transmission13.htm

How Automatic Transmissions Work ... Other cars use a vacuum modulator to apply pressure to the throttle valve. The modulator senses the manifold pressure,  ...

www.carparts.com/transmission.htm

It does this through various gear combinations. ..... The Vacuum Modulator monitors engine vacuum by a rubber vacuum hose which is connected to the engine.

cartreatments.com/automatic-transmission-vacuum-modulator-functions

Mar 14, 2016 ... It does this in two different means. ... With the assistance of an automatic transmission vacuum modulator, it is very important to ... If working effectively, it helps in controlling the vehicle's transmission shifts by directing the ...

itstillruns.com/transmission-vacuum-modulator-valve-6948943.html

The transmission vacuum modulator valve determines how much load is on the ... If the modulator valve is not working properly, the transmission will not shift ...

itstillruns.com/modulator-valve-bad-7922897.html

Vacuum-operated modulator valves are installed in automobile automatic ... close Never wear loose clothing when working under the hood of your car with the ...

www.autopartswarehouse.com/transmission_vacuum_modulator~pop.html

DO NOT install a used transmission vacuum modulator in your vehicle. The condition of the material is unknown, and it may have an effect on the other car parts.

www.carsdirect.com/car-repair/how-to-install-a-transmission-valve

If you do a lot of heavy hauling, you work your standard or automatic ... Reconnect the vacuum hose to the transmission modulator valve and the intake manifold.

www.reference.com/vehicles/vacuum-modulator-valve-f7c2c59aa9d756b2

... that is sent to the exhaust gas recirculation valve. The vacuum modulator valve is located inside a vehicle's. ... How do you clean the EGR valve on an engine?