Mechanics

BATTERY DRAIN

1988 Volvo 760

Electrical problem
1988 Volvo 760 4 cyl Two Wheel Drive Automatic 169000 miles

Hi, I have a 1988 volvo 760 turbo with 169000 miles. I had the alternator rebuilt in August of 08 because all of my dash light kept coming on and then the battery would be dead when I tried to start the car. It ran ok for about 2 weeks then the dash lights started coming on again. I took it back to the person who changed the alternator and he said that it was not the alternator but something electrical.
I have had to keep taking off the battery cable in order for it to start when I need to go again which is getting to be a pain. I took it to a volvo repair man and he put in a new battery, however the next day it was dead again. I have had people pull all the fuses we could find to check those but that does not seem to be the problem. I also am having a problem (which may not be related) with the fuel gauge where it does not show any gas in the car and then will go up to where it should be.
I am looking for some help as to what else should be checked to see if we can find the draw which seems to be quite strong to kill a brand new battery.
Thank you for any help you can give me.
Avatar
Copsmom
November 9, 2008.




Hi there,

Thank you for the donation,

First thing to do is have a current draw test done, place an Amp meter between Battery pos & the terminal, check draw with doors closed & key off, check that the alternator is not back feeding through a faulty diode, unplug all the alternator wires and check the draw, if it drops away it will be the alternator, if not, re check fuses circuit breakers and fusible links one at a time, and see if you can isolate this draw,

Mark (mhpautos)

Mhpautos
Nov 9, 2008.


AD