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Ford Bronco XLT
Mechanical Engineering

How do you check a modulator valve?


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Wiki User
2015-07-15 21:47:39
2015-07-15 21:47:39

first pull off the line going to it and if it has fluid in it change the modulator. Next, take the modulator off and apply vacuum to the line and stick a screw driver in the end of the modulator and see if the diaphragm moves the valve inside. If the valve doesn't move, replace the modualtor.

- i am assuming ford but also you can pull the vac.line off of carb.or wherever it draws the vacume from without getting under car and check for fluid at that point

Consider getting yourself a service manual as it contains many troubleshooting for your car. Comes very handy sometimes.

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This transmission does not have a modulator valve.This transmission does not have a modulator valve.

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Remove the vacuum hose from the modulator valve. If you see any fluid in the valve or the hose, it is defective.

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It doesn't have a modulator valve.It doesn't have a modulator valve.

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A 1994 Plymouth does not have a modulator valve.

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No, it has an electronically controlled valve body,there is no modulator valve.


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