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Holden Astra: Why is it losing power suddenly?

Several times over a number of months my Holden Astra has lost power without explanation. On each occasion I turned the ignition off, then on again, and the car restarted. Can you help?

When it loses power like you describe it’s usually because it has gone into limp-home mode due to some problem related to the car’s computer or associated sensors. By turning the ignition off and on again you are, in effect, rebooting the computer. The only way to find out what is causing it is to have a mechanic use his diagnostic equipment to identify the fault.

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