Talk about frustrating...

After 2 weeks of totally breaking down, fully flushing my a/c system, including replacing exp valve and receiver/drier as well as resealing my compressor, I go to charge system and compressor fails to engage. (compressor worked fine before this work)

No problem I think, I'll just jump the pressure switch to engage compressor clutch and get R-12 flowing thru system.

Nothing.....

I remove compressor again to double check the solenoid coil ground wire and that the speed sensor was put back on correctly... all looks fine.

The only thing I can imagine is that the pressure switch went bad when I R&R'ed it to the new drier. But that begs the question, when a failed compressor low pressure switch is jumpered, will the compressor clutch still engage?

If someone knows the answer please inform me before I go thru the trouble of testing the low pressure switch.

Thanks!

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-Paul-
'01 E430, Sport 72,000 mi
'98 C280, 126,500 mi