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    1. #1
      Join Date
      Aug 2006
      Posts
      381
      Country Flag: United States

      RPM drops when turning A/C on

      Hi guys

      I have the March Serpentine system on my 72 camaro. The RPM at idle is around 800. However, it drops down to 500 or so when I turn the A/C on. In fact, the battery voltage drops as well from 12 to 10.

      I just want to know why this is happening...Hopefully I get some ideas from you guys, and really appreciate it..






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