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Old 07-01-2005, 04:55 PM   #28
mattsdominion
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Re: Re: 1990 3.1L Lumina - My Problems

Quote:
Originally Posted by richtazz
check all your belt driven pulleys. I bet you have an A/C compressor, water pump, or tensioner pulley bearing dragging. It's the only thing that makes sense since it runs good with the belt off but not on. With the last post you put up about unplugging the alternator, I would say that your wires running to the voltage regulator are shorted, and causing the alternator to reverse polarity and draw down, acting like an electric engine brake.
I'll check the voltage regulator when i get out of work..

All the accessories are rotating nicely... nothing seems to be dragging.... but the tensioner is bouncing like something might be hanging. the water pump is rotating really smoothly... and the ac seems to be rotating smoothly as well... so i'm not quite sure what else to look for.

When the belt is on, and the alt is plugged in, i have problems..
when the belt is on, and the alt isnt plugged in, it works..
when the belt is off, it works, and the alt. state has no effect on the car's preformance.
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