Heat went from only working when acclerating to not at all. Just cold air. Also when I brake my light and blower fan die down then when I accelerate lights and fan go pack to normal. What is going on
You have a vacuum leak to a ventilation system door motor. It could be a bad hose or just a hose that came loose. There are doors in the system that are moved with vacuum motors to control air flow. One of those has a loose hose or a hose with a hole in it.
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