Trying to get AC working
Race Director
Joined: Oct 2008
Posts: 19,233
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From: Long Island
How Do Air Conditioning Systems Work in a Car? (uti.edu)
If the compressor kicks on, it's usually the orifice / valve that is the issue. Sometimes the Dryer clogs, or orifice , usually from rust or dirt in the system.
When the compressor kicks on the idle should drop, as it adds a load to the motor. Most idle stop solenoids do not have the power to push the throttle up, but can maintain the higher idle.
If the compressor kicks on, it's usually the orifice / valve that is the issue. Sometimes the Dryer clogs, or orifice , usually from rust or dirt in the system.
When the compressor kicks on the idle should drop, as it adds a load to the motor. Most idle stop solenoids do not have the power to push the throttle up, but can maintain the higher idle.
Last edited by BLUE1972; Apr 7, 2022 at 01:48 PM.
Thread Starter
Instructor
Joined: Nov 2014
Posts: 239
Likes: 116
From: Wilmington, NC
Update: I installed the missing thermal fuse and bought a set of gauges that have the right connector that will depress the shrader valve. The loaners from Autozone don't work with R12 valves. I watched a couple videos on using the gauge manifold and filled the system with R12. It took about 2 1/2 lbs. Now blowing out of vents at about 48 degrees. Thats good enough for me. Thanks for all the help and guidance. Lets see how long it keeps working. I still have a dozen 1 lb cans od R12 on hand.
