If the sight glass shows 'bubbles' when the A/C is running, then it might need a charge. If the temp/humidity is high, then a 'few' bubbles are ok.

To monitor the A/C system, check my page (red house) and click on menu #14. Perform the 'Operational Checks' described to check the temps/pressures in the A/C. With the car running, check the evaporator temperature (press REST button five (5) times), sb cycling from 37F to 42F. If so, everythings ok.

[Edited by JimF on 07-23-2001 at 08:29 PM]

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Regards . . . . JimF
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'94 S500 Cpe

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