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heater cold air

10
0
94 f150 5.8 I notice a by pass hose around the thermostat is this the reason it takes for every to warmup / have changed thermo- help cold
 

blacksnapon

Moderator
Staff member
9,461
301
waynesville,mo.
Check both heater hoses after its warmed up. Both should be warm. If not, the heater core is plugged up.
 

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