does a 1983 jaguar xj6 have a modulator valve? 4.2 engine.

130,500 MILES
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DBRO58
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It will not go into 2nd or low. In drive it starts out as if it has no power. But levels out when on open road. But can shift to 2nd and low with no change.
Dec 28, 2011 at 5:28 PM
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RIVERMIKERAT
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Yes, it does have a vacuum modulator.
Dec 28, 2011 at 5:44 PM
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