72 skylark popping and cracking under hood with AC on

Discussion in 'Sparky's corner' started by 72newbiebuick, Aug 30, 2014.

  1. 72newbiebuick

    72newbiebuick Gold Level Contributor

    hey all,

    Finally got my AC running and when I was under hood after a drive I was checking the sight glass just to make sure all was good. I gave it a little throttle by hand with the compressor engaged and all of a sudden I started getting smoke and popping noise from what appeared to be the voltage regulator area. when idling it doesn't do act up, only when you bump it to say 2-2500rpm. it also doesn't do it at all when the ac is off.

    Alternator is 55amp, been rebuilt. VR is original. Is it possible the AC is causing a draw on the regulator and it is failing? I don't want a fire and I have yet to get back in there as the car is still warm.

    Any opinions?

    Mark
     

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