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Not start the following day

Tiny
DAVIDCAL
  • MEMBER
  • 1993 VOLVO 940
  • 200,000 MILES
I just replaced the battery in my 1993 940 wagon only to have it not start the following day. What could cause this to happen? I had a problem with my fuel pump which I replaced. Drove the car for about a month and one morning the won't start. The engine would barely crank over, thought it was a bad battery, charged it and it started. Drove the car where I needed to go and when I got back into the car it won't start. Thinking the battery was dead, I replaced the battery that afternoon. Got up the next day and the car won't start.
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Saturday, March 3rd, 2012 AT 8:42 PM

3 Replies

Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
Charge or jump-start the battery, then measure the battery voltage. With the engine running, the battery must measure between 13.75 and 14.75 volts. If it is low, the generator is not working.

then go here

https://www.2carpros.com/articles/car-battery-dead-overnight

Start by measuring that voltage. All you need is a very inexpensive digital voltmeter. Harbor Freight Tools has them on sale all the time for $5.99, and sometimes as low as $2.99. They work just fine.
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Saturday, March 3rd, 2012 AT 10:03 PM
Tiny
DAVIDCAL
  • MEMBER
  • 2 POSTS
Thanks alot, that really helped.
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Sunday, March 4th, 2012 AT 5:04 PM
Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
What did you find?
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Monday, March 5th, 2012 AT 12:01 AM

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