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1993 AC question

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Old Mar 21, 2025 | 05:15 PM
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Default 1993 AC question

Question my AC Control module in my 93 has the issue where sometimes it doesn’t switch modes or temp when you push the buttons, and sometimes the green light will flash when a mode is selected. I know this is common and I’m going to try and clean the connections to see if that solves that issue.

My main question is the AC had blown ice cold. Coming back from a car show Sunday the AC was blowing cold and then was blowing warm suddenly. I don’t hear the compressor cluch clicking like it should when turning the ac on and off. Could these intermittent buttons issues cause a faulty signal to the compressor to turn on?

I’m not an electrical genius or ac expert but before I take it in I thought I would ask if the 2 issues could possibly be related?
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Old Mar 22, 2025 | 02:43 AM
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this question will probably have to be answered with a test meter/light at the AC compressor and the low and high pressure cutoff switches. Redneck version is to paper clip jump for just a second to see if compressor kicks on.
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Old Mar 22, 2025 | 06:04 AM
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Originally Posted by swtato90
Question my AC Control module in my 93 has the issue where sometimes it doesn’t switch modes or temp when you push the buttons, and sometimes the green light will flash when a mode is selected. I know this is common and I’m going to try and clean the connections to see if that solves that issue.

My main question is the AC had blown ice cold. Coming back from a car show Sunday the AC was blowing cold and then was blowing warm suddenly. I don’t hear the compressor cluch clicking like it should when turning the ac on and off. Could these intermittent buttons issues cause a faulty signal to the compressor to turn on?

I’m not an electrical genius or ac expert but before I take it in I thought I would ask if the 2 issues could possibly be related?
Hi the flashing green led indicates an error, check the images below how to check the error code causing the air-conditioning compressor to be inhibited.

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