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Old 11-12-2008, 02:27 AM   #1
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MAP Vacuum question
My 86 LG4 has a MAP attached to the firewall. Where does the vacuum line on the lower left of the MAP run to?

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Old 11-12-2008, 03:04 PM   #2
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Up close to the heater/AC box, right?

That's not a MAP sensor. That's a BAP sensor, barometric sensor. It's supposed to have a block of foam over the nipple as a filter, but no hose is attached to it.

The MAP is in the driver's rear corner of the engine compartment.
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Old 11-13-2008, 12:02 AM   #3
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Re: MAP Vacuum question
Thank you. I don't have the foam so is there something I can substitute or should I leave it alone?
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Old 11-13-2008, 12:02 AM
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