Engine Size: 3.8
Refrigerant Type: 134
Country of Origin: United States
i have been trying to locate a leak on a 99 town 7 country. i was using a cps leak detector before it crapped out and switched to pressurizing it with nitrogen and using an utrasonic. i cannot find a leak anywhere and yet the system looses 50% of the charge within a few days. i am debating on purchasing a uv kit, but wondered how it would work trying to indetify leaks in the 2 evaportators if you cannot see in them. any ideas?
secondly, is there a component that is prone to leaking on these vehicles?
Dye will sometimes make its way to the evaporator drain but only after operating the system for a while with a full charge and condensing enough water to flush it thru. A refrigerant electronic detector is better for finding evaporator leaks. Can't really blame the car that your leak detector quit.
Your vehicle is well known for front evap leaks........
The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......
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