Question about 1991 Chevrolet Caprice
Cant find low ac port
Posted by Anonymous on
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Posted on Jan 02, 2017
Your service port will always be in the larger line of the two .. which is low pressure side. It might be in the dryer also which is low side.. your dryer is about 3 inches across and 8 inches long and also has your pressure switch for the AC compressor in it.. holler if you dont find it now... thanks Jerry
Posted on Apr 25, 2009
the turn signle lever, in the columb tricky to do , it was about 160 for a columb repair shop to do
there are some relays under the hood on the fire wall passenger side. mine has what the relays are under the relay cover it looks like a big T see if it clicks when you pull on the turn siginal lever a relay may be the problem
Posted on May 16, 2009
You find the AC low pressure at the top of the compressor, orientated toward you , facing the front of the
vehicle. You can also follow the compressor line to reach the port.
The valve is covered a plastic cap covering it.
Near the compressor you find two ports, the high port and low port.
To find out which one is the low port, run the air conditioner for a couple of minutes withthe engine on.
Then turn off the care and touch the lines from compressor to the two ports covered with plastic caps. Only one of the pipes will be cold, the cold line will lead you to the low port.
Posted on Jun 18, 2009
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