A/c light flashing or blinking after 3 min of driving [Archive] - Toyota MR2 Message Board

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A/c light flashing blink after 3 min of driving..i just installed a compressor and added 25oz off r134a ....the ac blows cold, but after 3 min the light on the ac button starts blink or flashing...Its not steady, very random flashing. anyone know what it is ?