Ford e350 Heater issue
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Mountain Pass
Joined: Oct 2020
Posts: 194
Likes: 11
Ford e350 Heater issue
Hello I have a 2008 ford e350 van and heater blows heat only when driving soon as I stop starts blowing cool air when driving it blows hot what could that be possibly issues? Thanks
Hotshot
Joined: Jul 2020
Posts: 10,572
Likes: 2,678
From: Near Salt Lake City
Pull the actuator and move the blend door manually
I think you'll find yours is broken
Fleet Owner
Joined: Aug 2010
Posts: 21,255
Likes: 1,657
From: Reynoldsburg, Ohio
If this heat seems to come and go more with the engine speed I'd day it was very likely the heater core has restricted coolant flow through the heater core.
If any sort of "stop leak" or something similar it could be the reason. OP with the engine at full operating temperature feel the heater core inlet and outlet houses near the evaporator housing under the hood, pay attention to how or if their temps rise and fall as the engine is revved up etc.
IMHO if the blend door was the sole fault the temps at the hose ends wouldn't be in sympathy with engine speed.
If any sort of "stop leak" or something similar it could be the reason. OP with the engine at full operating temperature feel the heater core inlet and outlet houses near the evaporator housing under the hood, pay attention to how or if their temps rise and fall as the engine is revved up etc.
IMHO if the blend door was the sole fault the temps at the hose ends wouldn't be in sympathy with engine speed.
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