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How do you adjust a vacuum modulator?

Updated: 10/23/2022
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18y ago

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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.

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18y ago
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Q: How do you adjust a vacuum modulator?
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