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Originally Posted by wisemank
I have a 2001 Safari that suffers from poor heat. When the van idles I get cool to warm air at best. When we are driving the air gets hot! Hmmm - Just did a power flush, Replaced (1) vacuum line from throttle body to A/C this summer. Is there another Vacuum line issue to be found? Or a sensor? Please advise. - My wife has lost her patience and I would like to sleep inside!!!!! Just kidding.
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THERE IS A VALVE IN THE TOP HEATER HOSE THAT IS VACUUM CONTROLED,HAVE SOME ONE MOVE THE CONTROLES INSIDE TO SEE IF THIS VALVE ACTUALLY WORKS.THATS MY PROBLEM,ONLY WHEN I PUT IT ON DEFROST THE VALVE WOULD LEAK.GOOD LUCKLET US KNOW.