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Idle Oscillating when warm and lights on 83SC
My 83SC has a very pronounced oscillation during idle. It seems to only happen once the car is warmed up a bit and the lights are on. Other than this, the car is running very well.
Fuel consumption seems fairly normal, the lights dont flicker. Car was tuned up approx 2500 miles ago, with new cap and rotor, plugs. Fuel injector seals replaced, O2 sensor new. Permatune box is new, as is coil.
It seems that when the lights are on, there must be a voltage drop on one of the CIS components which operates when the car is warm running.
Where should I start? I've had to set the idle to approx 1600 RPM otherwise the oscillation will stall the car. When the problem started, it started all of a sudden. It didnt slowly get worse that I can recall.
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