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Old 05-14-2003, 08:50 PM
Duke2.6 Duke2.6 is offline
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Join Date: Mar 2003
Location: Southern California
Posts: 2,055
Could be your refrigerant level is low.

The following simple test is in the 1984 Maintenance Manual section 8312, and is typical of all cars with AC systems.

- Start engine and run at idle speed.

- Depress button switch "DEF" [This will engage the compressor.]

- Check fluid level as follows: Pull off one electrical lead on low-pressure switch [Either of the insulated spade terminals.], electromagnetic clutch should then switch-off and refrigerant should flow back into the receiver-dehydrator.

- Reattach electric lead, electromagnetic clutch should now switch-on again and refrigerant should flow free of bubbles past the sight glass.

- In the event of foam or bubbles, there is not enough refrigerant in the system.

The receiver-dryer sight glass is located in the engine room just behind the LH headlight assembly, and the low pressure switch with two insulated spade terminals is right next to it.


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