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HVAC Vacuum Problem INSIDE

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Old May 19, 2018 | 03:41 PM
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Default HVAC Vacuum Problem INSIDE

I have the dreaded cold air from all vents issue. But my vacuum issue is inside the car. I checked for vacuum where the purple line connects to the supply. With the car running I get 16 inches of vacuum.

I then tested vacuum on the purple line with the car running and with the car not running. With the car running, I was not able to pull any vacuum. Squeeze the handle and nothing. With the car turned off I was pull 15ish inches of vacuum that would bleed off about an inch peer second.

Has anyone run into this issue? Could use a little help.

Thanks!
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Old May 19, 2018 | 06:04 PM
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do you think its in the control valve on the side of the heater box above the blower fan? you also have a HVAC vacuum canister located behind the RF fender
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Old May 19, 2018 | 07:25 PM
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Originally Posted by pewter99
do you think its in the control valve on the side of the heater box above the blower fan? you also have a HVAC vacuum canister located behind the RF fender
Hmmmm... I don't think it is the canister as I have vacuum past that point (inside the car). I suspect that the vacuum issue is from the purple input to where ever the final spot that vacuum is used... But I don't know what that is...

Bill Curlee!!! Are you out there?
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