Question about 1999 Jeep Grand Cherokee
The low pressure side of the r134a system is always located on the thicker pipes vs. the thinner pipes leading away from the compressor.
So, just followi the larger diameter piping from the compressor until you come to a quick connect fitting that attaches to the hose quick connector that is attached to a can of r134a.
The pressure reading should be 25 psi to 45 psi on the low side when the compressor is turning and the a/c is on.
If it's higher than this, the compressor may not be turning, and the normal non turning psi is 75psi to 100 psi or so on a hot day.
Posted on Aug 26, 2010
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Posted on Jan 02, 2017
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