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Old 03-13-2003, 11:17 PM
dieselsteve dieselsteve is offline
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Join Date: Jan 2003
Location: Innisfil, Ontario, Canada
Posts: 93
pins to jumper for W140 A/C charge

I have a 1992 W140 300SD. My A/C compressor is not turning. IN the past (1987 300SDL W126) my A/C compressor was engaged 100% of the time, except in economy mode.

I believe that my system is low, I will verify with my gauges but If I need to what pins do I jumper to bypass the low pressure switch?

Is this onthe receiver drier as on the older MBZ? I did find a 3 connector plug. Low pressure and high pressure?

Also is there another procedure to charge/top up a A/C system?

thanks in advance
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