Replaced battery, car died again.

Asked by Dec 15, 2015 at 09:20 PM about the 2005 Subaru Forester

Question type: Maintenance & Repair

It very hard rained recently and my car
developed problems driving through ithe
storm from work. It started badly this
morning and midway through my drive to
work it died while I was idling at a light. I
pushed it over, called a cab and replaced
the battery right then and there and
cleaned the badly rusted and corroded
connections with a knife. The car started
right up and I went to work. I drive back
tonight and when I am almost home there
was a bang while I was going up a hill and
the radio shut off and it was taking too
many rpms to accelerate. I managed to
nurse her in but just as I parked it shut off
by itself. I drive a 2005 Subaru Forester.

5 Answers

260

Im sorry to hear about your car but here's a video that might help you figure out what's wrong with her. If anything try to get under the car and look around for any damage caused by the rain. (Link) https://youtu.be/Yehz2gUnNe0

So I don't think that's the answer. I tried starting her up this morning and she started ok, but I turned on the radio and lights and the radio shut off within five minutes like before while idling and then I shut her down.

3,940

The radio may be a red herring. This is a tough diagnosis without seeing the car. Maybe let things dry off (hood open); start car, put AC on to operate rad fans and leave hood open to dry off ignition, etc. Then drive normally. If motor is happy but mismatch of RPMs and speed are evident then check trans function. Any CELs? AT light blinking? I'm hopig you haven't coincidentally lost your AT.... There's a decent chance you got a batteryy that's shorted internally or won't hold a charge, so don't discount trying another one if starting remains weak. I need more coffee for this one....

I have today and tomorrow off, but its raining today and I'm parked on the street. So tomorrow I'm going to replace the battery again see if that helps. Also I think the connector cables might be shot, they are highly corroded and rusted, I cleaned them but it might not have been enough.

3,940

The thin brass battery positive "half-rings" get eroded over time, reducing current carrying capacity. Best you head to any store and get a $2 connector, clean up the cable end, and screw 'er together. Clean, and repeat, if necessary, with the negative.

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