e350 - No heat
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Joined: Dec 2012
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e350 - No heat
I recently replaced the blower motor and resistor as well as the heat relay (which was blown) on the power distribution panel. It all seemed good but I can not get it to heat up. If blows out hot air when the selector is on heat, but it maybe only gets as hot as the engine, not really enough to do much. What else could be the problem?
Cargo Master
Joined: Jul 2009
Posts: 2,885
Likes: 24
From: Chino, California
Not sure if yours is like my '02 V10, but there is a vacuum activated shut off valve that blocks the flow of coolant to the heater core when you have max AC on. Could this valve be stuck?
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