Thread: 1990 300E A/C suddenly stopped blowing cold
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Old 06-19-2015, 03:12 PM
Benz Mondi Benz Mondi is offline
Benz Mondi
  
Join Date: Nov 2006
Location: Sacramento area
Posts: 308
Pictures, Pictures
OK, got the multi-meter out. First, yes I do get 12v at the two connectors for the low pressure switch. Kind of a pain to get the plug to release from the compressor (see pic 1). With the engine running and the A/C on at the control panel, I do not get 12v with any combination of the 3 slots while testing the plug end. How can I energize the clutch via the 3 posts (see pic 2)? The plug continues upstream toward the fire wall (see pic 3). Anything upstream I should check? Yes, I do like to keep a tidy engine bay in all my cars- especially since I'm the one getting dirty if I didn't

Thanks,

AL
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1990 300E A/C suddenly stopped blowing cold-061901-6-.jpg   1990 300E A/C suddenly stopped blowing cold-061901-1-.jpg   1990 300E A/C suddenly stopped blowing cold-061901-4-.jpg  
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03 CLK430 Cabrio 211K Pweter Silver/ Oyster Leather
90 300SEL 214k Pearl Black/ Alto Grey/Black Leather

Prior: 85 190E, 88 300TE, 89 300TE, 90 300E 2.6, 90 300TE, 92 300E 2.6, 91 and 93 300SL, 87 Ferrari Mondial Cabrio
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