Mechanics

WHAT TO LOOK FOR WHEN THE AIR COMPRESSOR WON'T COME ON?

2000 Lincoln LS • 144,560 miles

The fan motor is running but air compressor won't operate. Have checked all fuses. Blower motor works. All wires are in working order. But can't find a reason that the compressor won't work. Everything else seems ok on the vehicle.
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Burnette's auto
March 2, 2012.




Low r134a charge.

Merlin2021
Mar 2, 2012.
You need to start with pressure gauges. If you see over 80PSI static pressure, then you have an electrical issue and you will have to track it down with a wiring diagram.

Wrenchtech
Mar 2, 2012.
Have attempted to install freon. It doesn't allow it to come up to 80 psi without the compressor cyclying.

Tiny
Burnette's auto
Mar 2, 2012.
That means you have an electrical issue that needs to be troubleshooted.
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Wrenchtech
Mar 2, 2012.
Lincoln is VERY hard to charge to R134a spec on the decal with a charging station, take it to a garage with an a/c station, this might solve your problem. Had to do it with my own 03 TC.

Merlin2021
Mar 3, 2012.
The other thing is with 145,000 miles, the compressor itself could be the issue.

Merlin2021
Mar 3, 2012.
Refrigerant is not the reason the compressor is not coming on. It has 80 PSI static and that is plenty to energize the compressor.
Try disconnecting the battery for a minute. Some will set a code for low refrigerant and then lock out the system until the code is cleared and then it could be charged if that were the case.

Wrenchtech
Mar 3, 2012.
I though he said he could not get 80 psi into it. If the compressor runs but cycles due to low charge, use a charging station.

Merlin2021
Mar 4, 2012.
The other point with r134a is at least on FLM cars they are almost if not impossible to charge accurately with a gauge set.

Merlin2021
Mar 4, 2012.
What does the gauge read with the compressor not running?

Merlin2021
Mar 4, 2012.

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