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What Does The Vacuum Line That Goes To The Throttle Body Do?

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Old 05-12-2004, 10:20 AM
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What Does The Vacuum Line That Goes To The Throttle Body Do?

...and why is there only one on a 98 but two on a 99?

Thanks!
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Old 05-12-2004, 10:36 AM
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Originally Posted by JeffesonM
...and why is there only one on a 98 but two on a 99?

Thanks!
It goes to the EGR control valve solenoid, which also controls EVAP operation. Don't know why the 99 has two lines, unless it separates EGR and EVAP control to two different solenoids.
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Old 05-12-2004, 10:46 AM
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Thanks. My 99 is a cali-spec, and I know they did a bunch of extra garbage for 99 in general and cali spec specifically.
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