THE CAR DIES WHEN THE HEATER IS ON

1987 Pontiac Bonneville

Tiny

Anonymous

November, 12, 2012 AT 2:04 PM

The car dies when the heater is on. It starts right back up. What could cause this?

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Tiny

caradiodoc

November, 12, 2012 AT 10:10 PM

Unplug the small connector on the back of the generator, then see if the stalling occurs. If it does not, have the generator professionally load-tested. If it can only deliver one third of its rated output current, it has a defective diode. "Ripple" will also be very high. That will also cause it to develop much larger voltage spikes than normal. Those spikes can destroy the internal voltage regulator and diodes, and they interfere with engine sensor signals.

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