Question about 1989 Lincoln Town Car

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I tried to recharge my air conditioner and the pressure gauge showed red and would not recharge. There is no blockage in the lines and I replaced the compressor, but still shows "red". When first replaced, the compressor, of course, with no pressure, didn't come on, but as i tried to add more refrigerant, it started to come on and off, like it was low, but i can't add any, because the pressure gauge shows "red". This is for my 1989 Lincoln Town Car Stretch Limo, and the a/c worked fine last summer. The only other on-going a/c problem that i have had since i bought this car two years ago it that when you acceleration the air stops blowing and it feels like the heat comes on and then when you get up to speed it starts blowing again.(I'm sure this is a different problem, since the a/c worked well even when this was happening) Thanks.

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  • Lincoln Master
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Try resetting the ac system by removing the negative cable from the battery,for 25 seconds,see if it starts back up,I assume you are using a single recharge hose with a gauge,if the system is not running,the pressure will be in the red,this means nothing.You can by pass the low pressure switch on the dryer ,unplug it,and use a wire to connect the two wires together.Now if the gauge goes down into the negative area,or stays around 10 and you have two cans of freon in it,then the orifice tube is stopped up,this needs to be replaced,or cleaned,it is located in the liquid line under the dryer,there is a swelled portion in the line at the connector of the two lines put together,when you part these two lines ,take them apart,use needle nose pliers to remove,and install the new orifice tube,if this was helpful,at all,please rate,thank you.

Posted on Jul 05, 2010

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  • Lincoln Master
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Well, on my intermatics hose with pressure gauge, the gauge will show red if the compressor is not running for any length of time.

Try disconnecting and reconnecting the can of refrigerant to make sure that the end of the hose is pressing on the schrader valve inside the quick connector.

Hopefully you have r134a in the system with the adapter kit.

I have a 1997 Cadillac Deville that I added some refrigerant to, and I had to disconnect and quickly reconnect the hose to make the safety valve in the hose reset so that it would give a lower true reading in the green area, and not the red area.

I also, made sure that I pushed on the connector end to properly seat the hose end onto the quick connector. Otherwise, the can may not empty properly.


Hope this helps.

Posted on Jul 05, 2010

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