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Discussion Starter · #1 ·
Lately my a/c has been acting up. What it does is blow cold really well below 45 mph,but when I get on the frwy and I am going 55-70 mph no cold,then when I get off the frwy and slow back down the cold kicks back in. Anyone know whats up?
 

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Discussion Starter · #4 ·
If it takes a while before you start getting cold air again, it is possible that the evaporator is freezing and obstructing airflow over the evap.

If this is the problem I w/the a/c what needs to be done?

It does not take a long time for it to blow cold. I start the truck up & it instantly cold. When I get on the frwy @ about 50 mph + I lose the cold air. When I slow down to exit it comes right back.
 

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If this is the problem I w/the a/c what needs to be done?

It does not take a long time for it to blow cold. I start the truck up & it instantly cold. When I get on the frwy @ about 50 mph + I lose the cold air. When I slow down to exit it comes right back.
First of all make sure you have a clean cabin air filter. A dirty one can restrict airflow and cause icing of the coils if the humidity is high.
Had this happen once on my wifes Corolla.
 
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