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Can a poor battery make a car run badly?

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Old 07 January 2005, 08:52 PM
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turbochrissy
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Default Can a poor battery make a car run badly?

Had to put my lights on today as the weather was awful. I had a problem yesterday where the car "spluttered" and it happened again today. Bear in mind I was towing on both occasions and today it stopped when I turned the sidelights off.

I was told it could be lambda sensor, but this was before realising it stopped with the sidelights off. Do you think thats a coinsedence and the lambda is knackered, or can the battery be on its way out?
Old 08 January 2005, 03:21 PM
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JohnD
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Once the engine is running the alternator will supply the electrical needs. You should see around 14.5 v across the battery with the engine running following a start. Anything much less could put the alternator under suspicion.
JohnD
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