Question about 1988 Mercedes-Benz 190

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AC Problems I have a 1988 Mercedes 190E...2.6 motor, I installed a new AC Compressor in the last 3 months and now i was going to sercvice the AC and the compressor does not come on. I checked power at the fuse under the hood for the AC Compressor and have power to the fuse and after the fuse side too.my question when you service the AC for the first time after a new compressor is installed will the compressor come on with no freon in the system.. as when you are using your ac and say you get low freon the low pressure switch cuts the compressor off to prevent it from runnin gon low freon.I am lost and do not know what to check now

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If there is no gas in the system it as you pointed out the low pressure switch will shut the power to the clutch in the compressor off. your pressureswitch should be located near the dryer at the front of your Benz. You could try and bridge it to see if the compressor engages, how ever DO NOT try and keep it engaged without gas in the system or you may find yourself having to change the compressor again.

Posted on Aug 18, 2008

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