Air Conditioner Compressor

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Aug 30, 2007 | 07:29 PM

RogerGym

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Joined: Aug 2007

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Air Conditioner Compressor

Hi, I have a 97 Ranger with a 2.3 engine. The Air Conditioner compressor will not run. I have checked the voltage across the clutch coil. There is no voltage.
I do not have a electrical diagram of this system. I did not see any sudden loss
of gas. It just stopped working. I have checked all fuses. All are ok. My question is does this system have a built in sensor to check for pressure or gas in the system that would prevent the compressor from getting voltage to run.
Any ideas,

Thanks,

Roger

Aug 30, 2007 | 08:40 PM

PSKSAM2

Laughing Gas

Joined: Mar 2003

Posts: 943

Likes: 2

From: Randolph, NJ

I think there is a cycling switch that is what engages the clutch. I think you can test the cluctch by shorting the switch for a short interval to see if it comes on. If so, you either have a bad switch or you are low on refrigerant.

Here's some other threads that might help:

AC Clutch won't engage

AC Clutch won't engage after recharge

In the second, Rockledge posted a really useful diagram of the system.

-Jim

Aug 31, 2007 | 05:42 AM

markfh11q

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Joined: Jul 2007

Posts: 66

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Jim hit it on the head. Try emptying and recharging the system, (I usually go by refrigerant weight when I do this, but there are kits with gauges that seem to work), and if it still doesn't engage look into a new cycling switch. Their not expensive, (less than ten bucks), and they mount onto the tee thingo going into the accumulator. If it's a 2.3 then the accumulator is most probably on the passenger side towards the back by the blower motor. The charge nipple is right above it.