I am having trouble with my 98 astro keeping the battery charged. I have replaced the alternator twice and it has a new battery as well. Weird thing about it is the battery will charge most of the time when its at idle, but voltage drops when there is a load on the motor. On the highway the drop is down to 10 to 12 volts and killing the motor. I was suspicious of the fuel pump. Could a bad pump cause this type of problem? I can hear the pump go up and down at the same time the voltage changes. Seems to me like the battery should charge more at highway speed than at idle. But it's opposite.I really don't even know where to start.
have the same problem?
Saturday, April 15th, 2006 AT 12:05 AM