Stalled at 55 mph when lights turned on
It will sometimes do this any time you turn on the HID headlights, even if the engine is warmed up etc.
The HID's will take about 60 or more amps each light (120+ amps total) for a few milliseconds. This happens only at HID startup. I suspect the ECU sees a voltage dip with such large current demand and it is not "happy" about that. The engine stumbles for about 1 second when this happens when the "mood" strikes.
Since the ECU probably monitors DC voltage at a high sample rate (it should be programmed to ignore this) or the ECU input voltage dips enough to fault the ECU for its required input voltage, need a capacitor on the input.
After much less than 1 second of being turned on OEM HID ballasts each take about 7-10 amps and after about 30-60 seconds about 3.2-3.5 amps each.
I would say my car does this 20-30% of the time when I switch the HID headlights on.
The HID's will take about 60 or more amps each light (120+ amps total) for a few milliseconds. This happens only at HID startup. I suspect the ECU sees a voltage dip with such large current demand and it is not "happy" about that. The engine stumbles for about 1 second when this happens when the "mood" strikes.
Since the ECU probably monitors DC voltage at a high sample rate (it should be programmed to ignore this) or the ECU input voltage dips enough to fault the ECU for its required input voltage, need a capacitor on the input.
After much less than 1 second of being turned on OEM HID ballasts each take about 7-10 amps and after about 30-60 seconds about 3.2-3.5 amps each.
I would say my car does this 20-30% of the time when I switch the HID headlights on.
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Poondoggs
Evo Engine / Turbo / Drivetrain
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Nov 5, 2009 10:49 PM
