AC accumulator and line frosting up.

AC accumulator and line frosting up.

Possible causes and things to check if the car ac line and accumulator are icing up.

The charge, could be low on refrigerant and the evaporator lines and accumulator will be icing up too.

Defective AC relay or the low pressure cycling switch stuck closed .

Orifice tube could be plugged and restricting Freon flow through it.

Check pressure with manifold gauges:

At ambient temperature of 85 deg Fahrenheit 45-55 psi low side and 225-250 psi on the high side.

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