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A vacuum modulator is used to apply pressure to the throttle valve. The modulator senses the pressure from the manifold and increases when the engine is under a heavier load.

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Q: What does a vacuum modulator do?
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Related questions

Where is the vacuum modulator located on a 1999 Chrysler Sebring 2.5 jxi?

The transmission does not have a vacuum modulator.The transmission does not have a vacuum modulator.


Where is the vacuum modulator on a 2001 Pontiac Montana?

2001 Montana has an electronic transaxle. There is no vacuum modulator. The 2001 Montana has an electronically controlled transaxle. There is no vacuum modulator.


Where is the vacuum modulator on a 1999 Chrysler Sebring 2.5l?

The transmission on a Chrysler Sebring does not have a vacuum modulator.The transmission on a Chrysler Sebring does not have a vacuum modulator.


How do you find a transmission vacuum modulator for a 1991 Chrysler new yorker?

The transmission in a 1991 Chrysler does not have a vacuum modulator.The transmission in a 1991 Chrysler does not have a vacuum modulator.


What is a vacuum modulator?

On some of the older vehicles the vacuum modulator controlled the shift points of the transmission by using the vacuum supplied from the engine.


How do you adjust a vacuum modulator?

I assume your refering to the vacuum modulator which controls transmission shift points. Remove the vacuum hose from the modulator. Using a small screwdriver, turn the screw inside the modulator. It may take several tries to get it right.


Is there a seal at the end of the vacuum modulator?

There should be an o-ring where the modulator is inserted into the transmission. There should be no fluid where the vacuum line attaches, if so the modulator is bad.


Does the transmission have a modulator valve?

as far as I understand , it does not have a modulator. e4od are electronic. no vacuum shift modulator


Should the modulator valve have transmission fluid in it?

If a vacuum modulator has fluid in the vacuum port, it has failed and should be replaced.


Does a Chrysler lebaron have a vacuum modulator?

No.


Where is vacuum modulator on a 2000 Pontiac Montana?

The 2000 Pontiac Montana does not have a vacuum modulator installed on it. Instead, it has an electronically controlled transaxle.


How do you replace the vacuum modulator on a 1967 mustang?

Jack up and support the rear of the car to minimize fluid loss. Remove vacuum hose from modulator. Remove bolt and retaining clip from under modulator. Remove modulator by pulling straight out. Install new modulator with new o-ring, replace clip and bolt and vacuum hose.