86 AC Quit
Thread Starter
Racer
Joined: Sep 2008
Posts: 403
Likes: 7
From: Space Coast Florida
86 AC Quit
Was working fine, then over a few months it slowly lost cool air and now it stopped working. I have a replacement coolant but didn't want to add more then it needed because I know that can ruin your system.
My pressure is within "green" PSI range when I connect the bottle to get a reading.
Also heard clicking coming from the compressor for a few seconds when I last had it on.
No clue how to proceed, when I bought it the previous owner had put in a new compressor and it worked great, less then a year ago.
My pressure is within "green" PSI range when I connect the bottle to get a reading.
Also heard clicking coming from the compressor for a few seconds when I last had it on.
No clue how to proceed, when I bought it the previous owner had put in a new compressor and it worked great, less then a year ago.
Le Mans Master
Joined: Jul 2004
Posts: 6,227
Likes: 697
From: Clifton Park, NY ............Clearwater, FL ... 85 Original Owner
Your A/C buttons will help with a simple diagnosis:
Push and hold the fan up, and fan down buttons, until a number (code) is displayed.
See codes definitions in link:
https://www.youtube.com/watch?v=lWIrT8tN-a8
Push and hold the fan up, and fan down buttons, until a number (code) is displayed.
See codes definitions in link:
https://www.youtube.com/watch?v=lWIrT8tN-a8
Le Mans Master
Joined: Jan 2006
Posts: 5,621
Likes: 206
From: Orlando FL
Was working fine, then over a few months it slowly lost cool air and now it stopped working. I have a replacement coolant but didn't want to add more then it needed because I know that can ruin your system.
My pressure is within "green" PSI range when I connect the bottle to get a reading.
Also heard clicking coming from the compressor for a few seconds when I last had it on.
No clue how to proceed, when I bought it the previous owner had put in a new compressor and it worked great, less then a year ago.
My pressure is within "green" PSI range when I connect the bottle to get a reading.
Also heard clicking coming from the compressor for a few seconds when I last had it on.
No clue how to proceed, when I bought it the previous owner had put in a new compressor and it worked great, less then a year ago.
But your pressure reading is only valid if the compressor is running. If it is clicking, the compressor may not be engaged. If the compressor is not running because the Freon (charge) is so low, then you might only be reading static pressure of the system.
If the compressor is not running and the fat pipe is not cold, you might not have to bypass the cycling switch the get the compressor to run. Then you can get Freon in the system to the point where you can remove the bypass and let the system cycle. If you can get it to cycle somewhat normal, then you can add Freon if necessary to a normal pressure and cycling.
In the end, you may just need a Freon charge.
Thread Starter
Racer
Joined: Sep 2008
Posts: 403
Likes: 7
From: Space Coast Florida
You really need a set of gauges ($60).
But your pressure reading is only valid if the compressor is running. If it is clicking, the compressor may not be engaged. If the compressor is not running because the Freon (charge) is so low, then you might only be reading static pressure of the system.
If the compressor is not running and the fat pipe is not cold, you might not have to bypass the cycling switch the get the compressor to run. Then you can get Freon in the system to the point where you can remove the bypass and let the system cycle. If you can get it to cycle somewhat normal, then you can add Freon if necessary to a normal pressure and cycling.
In the end, you may just need a Freon charge.
But your pressure reading is only valid if the compressor is running. If it is clicking, the compressor may not be engaged. If the compressor is not running because the Freon (charge) is so low, then you might only be reading static pressure of the system.
If the compressor is not running and the fat pipe is not cold, you might not have to bypass the cycling switch the get the compressor to run. Then you can get Freon in the system to the point where you can remove the bypass and let the system cycle. If you can get it to cycle somewhat normal, then you can add Freon if necessary to a normal pressure and cycling.
In the end, you may just need a Freon charge.
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
You want to bypass the low pressure switch. It keeps the compressor from running if there is little or no freon in the system.
You unplug the connector on the switch and jumper the two contacts in the connector.
I think I got too close when I took the picture. It loses context:
You unplug the connector on the switch and jumper the two contacts in the connector.
I think I got too close when I took the picture. It loses context:
