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Safari heat problem

3 messages,  Last post on Mar 08, 2009 at 12:20 PM

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What is this discussion about? GMC Safari, Chevrolet Astro, AM General, Van


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#2 of 3
by dlm1954
Mar 04, 2009 (6:44 am)
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You've got a vacuum hose leaking that opens heat baffle when manifold pressuse falls,ie at an idle or slowing down,it has nothing to do with the heater itself,it's a vacuum leak.
#3 of 3
Re: [dlm1954] by sammycastagna
Mar 08, 2009 (12:20 pm)
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Replying to: dlm1954 (Mar 04, 2009 6:44 am)

I had all the vacuum lines replaced and checked out by dealer still would not heat correctly. I took a water hose and flushed out the heater core and back flushed into the engine. I do not know if there was a piece of trash in there somewhere or what. But now I have 140 degree F heat and AC is 39 degrees F on max. I took it back to the dealer Friday and got them to unblock vacuum on my heater control valve. In my opinion the dealer did a sloppy job.
 
Thanks for your reply; Sammy Castagna

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