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Car Bettery 9.4v Wont Start

cefiro

By cefiro,
in General Maintenance

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cefiro Experienced

cefiro

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Posted (edited)

had issues with starting my car this morning, just ticked very quickly and looked at the PFC commander and battery said 9.4, cleaned terminals = no diff. Got some people to push start my car and got it home. turned car off and started fine again. I then went for a drive and looked at the voltage 16.6V. turned the car off and looked at the voltage again and it was 14.4V. Anyone got any ideas of whats happening with it. I have never noticed this before. i dont think its ever done this before as now the windscreen wiper are at light speed and the same with the power windows.

Edited by cefiro
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https://www.sau.com.au/forums/topic/290409-car-bettery-94v-wont-start/
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steve12 Explorer

steve12

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Get the regulator replaced. The battery may also be damaged but you may get away without changing it. Best to not drive car until problem fixed.

Alternator can output up to 30V and do a lot of damage. The low impedance of the battery will hold this down a bit.

Not sure what PFC is and how accurate it is. Suggest using multimeter check at the battery. Battery charges at 14v and sits at around 13v when not.

Jmaac Proficient

Jmaac

Posted
Posted

+1 for the regulator. Easy to change depending on type, usually little black box on back. As steve said just double check with a Multimeter

Thats a service. Recond. alternators are usually rewound also.

cefiro Experienced

cefiro

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Cheers its dropped over the last few days down to 14.4V or around there. going to take it to auto electrician today/tomorrow and see have seen it into the 15V but seems to settle down. its either the battery or alt regulator anyhow will let you know in case people suffer the same prob.

Cheers for the help

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