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Engine light


Davidblobeye06
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Hey guys and girls haveing problem with blobeye Impreza the engine management light is always on (might not come on on the off chance )but it doesn’t turn off once car is started and have plug it in and it’s comeing up low voltage This has started once I replace old crusty Battery with new one that is supposedly right one for car 

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When you say plug it in , was that a code reader That said low charging system voltage ? 

Could try cleaning alternator plug  and engine /battery earths. 

Could be a faulty alternator due to working too hard trying to charge the old knackered Battery.  

Halfords do a free Battery alternator check , might be worth a go to rule it out .

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12 hours ago, Davidblobeye06 said:

Hey guys and girls haveing problem with blobeye Impreza the engine management light is always on (might not come on on the off chance )but it doesn’t turn off once car is started and have plug it in and it’s comeing up low voltage This has started once I replace old crusty battery with new one that is supposedly right one for car 

Keep your side lights on all the time (they turn off with key out) see if that helps. Alternator voltage sits a bit low with them off for some reason. 

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  • 3 weeks later...

I had a Vauxhall 🤐 that burned a resistor in the back of the dash ,due to the alternator over charging at 18.8v .So there might be a resistor , fuse ,relay ,ECT also in the charging system too .

Have you used a multi meter to check the charging system voltage both off load and full load?

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  • 2 weeks later...

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