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AC ISSUES 96 B2500 van

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Old 04-06-2018, 09:34 PM
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Default AC ISSUES 96 B2500 van

so, I turn my AC on and it blows from the top for a few minutes and then on the bottom. Usually stays blowing towards the floor if I have set on max.
if I set it on vent or push/pull, it will usually start blowing through the vents after about 5 minutes.
Anyone have any idea why this is? It just started happening a couple weeks ago.
 
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Old 04-06-2018, 09:54 PM
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Probably a vacuum leak.
 
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Old 04-07-2018, 02:15 PM
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Ditto on the vacuum leak. It's a leak and not a clean break because if it was a clean break the air would come out the defrost only, no matter how much time passed. There's a vacuum hose that runs from the intake manifold over to the vacuum reservoir located behind and below the passenger headlight. Then a second hose off the reservoir runs through the firewall. This is the vacuum line that ends up supplying the HVAC controls.
 
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Old 04-08-2018, 12:49 PM
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Originally Posted by alloro
Ditto on the vacuum leak. It's a leak and not a clean break because if it was a clean break the air would come out the defrost only, no matter how much time passed. There's a vacuum hose that runs from the intake manifold over to the vacuum reservoir located behind and below the passenger headlight. Then a second hose off the reservoir runs through the firewall. This is the vacuum line that ends up supplying the HVAC controls.
Pretty easy to replace/fix?
Could I do it myself?
its about to get hot here in Texas!! ahahaha
 
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Old 04-09-2018, 02:16 PM
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Just need to find where it leaks.
 



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