Thread: 90 lumina a/c problems?
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Old 05-25-2008, 01:44 PM   #2
DAB77
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Re: 90 lumina a/c problems?
The relay gets the ground from the ECM. Check the high pressure switch. Normally closed , should have continuity until pressure is too high. Check light green wire from control head to high pressure switch and light blue wire from switch to ECM
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