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A/C problem,93 940 900

posted by  someone claiming to be Charles on  Tue Dec 14 02:52 CST 2004 [RELATED]

Hi Everyone
I know it's not the season to diagnose the A/C now, but my daughter is moving out of state and i'd like her car to be in good working condition.
when the A/C button is ON,the compressor is not engaging nor the cooling fan is coming ON. Supplied 12.V to the contacts at the low pressure switch,(compressor did engage),charged the A/C to 30 PSI on the low side,installed the switch back, but again same thing as above. Have read the archives and took Spook great suggsetions and did reflow the solder inside the circuit board where the relay is set and around the feet of the contacts for the main connector,still nothing.Even swapped the whole control unit from another car i have (known to be good),still no succsess.Fuses have been checked also.I dont know what to do next?
I appreciate all help you can provide as always.
Thankyou in advance. God bless,and have a good day.
Charles.






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