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Thread: possible earth problem??

  
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    astra 2.0's Avatar
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    possible earth problem??

    Right,

    Got some sort of problem with electrics on the car.

    Basically went to start it the other day and the dash was flashing like a xmas tree and the lights on the MFD and odometer flickering too.

    The rev counter was jumping around then would die suddenly and the steering wheel become heavy too.

    This lasted a few mins so tried turning the car off and on again a few times till it eventually started running sweet again.

    Not sure what happed but it also blew 2 headlights in the process which I have now replaced and are working fine.

    Could I have a bad earth or connection somewhere?

    Any guidance would be helpfull guys

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    James Watt's Avatar
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    Hi.
    First item to look at, is the earth strap connected from the Negative side of the battery, to the chassis. In fact, check both battery terminals.

    What you describe could indicate a loose connection.

    But if that were the case, I would expect it to be a difficult starter.

    How does the starter motor sound when starting?

    Regards James Watt
    Standard 2002 1.6 16V Astra MkIV 'G'

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    The car starts first time all the time and the starter sounds fine

    The car has blown another set of headlights the other day and noticed that all electrical stuff sped up like the wipers and indicators

    Someone mentioned the regulator on the alternator might be playing up as it seems as though I am getting spikes in the voltage?

    Thanks

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    From your first post I was wondering if the alternator is overcharging, anything more than 14.5 volts and your going to end up frying the electrics

    This will be a internal fault on the alternator which could be repaired by a company but usually its best just to replace it
    Want a professional job done on fitting your aftermarket electrical accessories? PM me for a quote
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    Yes.
    That does indicate a defective Voltage Regulator, on older cars it was a fairly simple job to replace the module screwed to the alternator.

    Nowadays they're moulded into the alternator body, which makes it a more costly, and time consuming job, replacing the alternator.
    It needs sorting quickly.

    Some 'Sealed' batteries can be opened to check the electrolyte levels.

    Overcharging batteries causes loss of electrolyte due to gassing. It gets out via the pressure seals.
    See if you can check the levels. If it is low, topping up is required, otherwise it will shorten its useful working life.

    Especially now the colder weather is here.

    If truly 'Sealed', replacement is only option. And an expensive one.

    Let us know how you get on.

    Regards James Watt
    Standard 2002 1.6 16V Astra MkIV 'G'

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