Q: Headlights flicker as throttle demands more power. 2006 Buick Terraza

asked by on December 12, 2016

Headlights flicker as the throttle demands more power with or without cruise. Voltage fluctuates. When I hold the accelerator in one position on an upgrade; the engine continues to run smoothly; while I simply loose speed. As soon as I press the accelerator out of a modest 'cruise' position, the headlights flicker and the tach indicates a 2-3 hundred RPM surging every 1-4 seconds. Joe

My car has 94000 miles.
My car has an automatic transmission.

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