2000 Dodge Caravan Logo
Posted on Aug 20, 2009
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2000 Dodge Grand Caravan AC blows warm

The pulley and clutch spin as expected. I tried to top up the freon , but the pressure was at 55 PSI on low side. If I run engine and AC and feel the input and output to compressor, thet're at same temp. How can you tell if the compressor is shot?

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Rich Norman

Rich Norman

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  • Dodge Master 502 Answers
  • Posted on Aug 20, 2009
Rich Norman
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Joined: Aug 15, 2009
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If the compressor is running and you have the same temp on both tubes the compressor is probably shot. You need to check the pressure on the high side too. It should be around 200.

When you replace the compressor, make sure you also replace the accumulator, orifice filter and flush out the evaporator and condenser. The only moving parts on the ac system is the compressor and often when it fails it will put small metal particles into the a/c system that will cause your new one to fail.

Hope this helps.

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Look at the front of the ac compressor and have someone turn on the ac from inside the car. The front of the pulley(clutch) will spin when turned on.

If it does not spin, the low pressure switch (LPS) is not satisfied. Meaning there is not enough freon in the system to operate the system. Means low freon capicity because of a leak.

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Look at the front of the ac compressor and have someone turn on the ac from inside the car. The front of the pulley(clutch) will spin when turned on.

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