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whenever i engage into 4x4 with the sotf switch my a/c turns off. this has to be a vac leak right? i replaced hoses going to hubs and going to vac pump... didnt fix my prob. any help would be great. thanks
 

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Vaccum issue with A/C

I would look at the inner seals on your wheel bearing/hub assembly. If the inner seals to your hubs is dangling free you are trying to draw vaccum to your hubs but you can't seal the vaccum. So in turn your A/C turns to maybe defrost or to vent? Is that what your asking?
 

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Pull the hoses off at your hubs and plug the ends, then see if that solves the A/C problem.

If it does then you know that one or both of your hub seals are bad.

If it doesn't, then you still have a vacuum leak from a hose or the solenoid valve.
 

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I have the same problem and know that there's loose stuff behind the front wheels. Is there a link to fixing it? I saw a large thread about it some time ago but can't find it now. Still looking though
 
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