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Hey everybody,
So I have an old 83 f250 with the 5.8 in it. It's winter now, so I am using the heater quite a bit.. The trucks heater works great when it's sitting still or going 40 mph or less. When I get on the freeway it blows straight cold air. And as soon as I get back onto normal streets, it warms up again.. It wasn't doing this last year.
What do you all think it could be? I have checked the coolant level many times and it's good..
So I have an old 83 f250 with the 5.8 in it. It's winter now, so I am using the heater quite a bit.. The trucks heater works great when it's sitting still or going 40 mph or less. When I get on the freeway it blows straight cold air. And as soon as I get back onto normal streets, it warms up again.. It wasn't doing this last year.
What do you all think it could be? I have checked the coolant level many times and it's good..