Air conditioning/vacuum problem?!

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Oct 13, 2018 | 3:45 AM

ChevyV17

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Air conditioning/vacuum problem?!

I accelerate and my a/c goes away. What could it be?? Vacuum leak??

Last edited by ChevyV17; Oct 18, 2018 at 4:53 PM.

Oct 18, 2018 | 4:54 PM

ChevyV17

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Update: It was a vacuum leak. I changed all the vacuum hoses and the a/c now works perfectly and the engine runs smooth. Hope this helps people in the future!

Apr 26, 2019 | 5:31 PM

Matthew Flati

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I'm having the same problem with my 2500 Express van. A/C blows cold when idle and goes away when i throttle. How do i change all of the vacuum hoses??? any help is greatly appreciated

Apr 26, 2019 | 6:31 PM

mountainmanjoe

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Go to the dealer and ask for a vacuum source hose. Take off your doghouse and find the matching hose. Replace it. If it's not that then it could be the check-valve or sphere-shaped reservoir.

Apr 27, 2019 | 10:17 AM

tech2

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there is a vacuum hose in the passenger footwell that comes disconnected, near where the firewall meets the floor...closer to the doghouse, . pull up the floor vinyl and inspect

Apr 27, 2019 | 11:55 AM

Matthew Flati

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ok ill check it out this morning ... Thanks for the info....ill be back

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