My AC blows very cold at 55 MPH. With successive stops and gos it starts blowing hot. Clutch, compressor,and dryer was already replaced. When in traffic, temperature gauge climbs and then AC will blow hot. I probably have to buy a new condenser (6cyl; 3.4L). Any ideas bout this?

 

Inspect for a probable partially plugged radiator. If the engine temperature is running way above normal, some of the heat is transferred to the air-conditioning condenser, which causes the air-conditioner to lose efficiency. A faulty radiator fan can also be the cause. Changing the condenser is also a good option. Find quality toyota parts at:Toyota parts.

 

Sounds to me like you need a fan clutch. Your fan is used to pull air thru the radiator and condensor. If it is not you truck will over heat and the A/C will blow hot air.

Andrew