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Hi everyone,

My son has a 2000 Corsa B 1.0 12v with 50,000 miles that he's had for 2 years now. It's been no problem during that period and has been regularly serviced by a friend so has been well maintained.

A couple of weeks ago it started to loose power and, sort of die/cough when under load over 3,500 rpm. We have changed the Mass Airflow Sensor and blanked off the EGR valve but nothing has improved. Our friend has spent several hours looking over it today and has not been able to make any progress. It's not throwing any codes at all so we have nothing else to go on.

We're out of ideas now and I don't want to just keep chucking money at it if we're not really making any progress.

Does anyone have any ideas? All suggestions gratefully received.

Cheers

Pete
 

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It sounds that when you go over 3500 rpm its going into limp mode to protect the engine and normally puts the mil light on and a fault code, depends what you are using to retrieve the codes and was the mass sensor a new Vauxhall one, personally don't blank the EGR I give it a good clean
 

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Are you sure that the petrol filter has been changed recently?

If the fault is related to engine temperature, the temperature sensor could be causing the problem.

If it misfires when it loses power, the problem is probably an ignition fault.

If you haven't done so already, I would be inclined to buy a tin of 'carb cleaner' and give the throttle body a good clean (an old toothbrush can help when doing this.)

Regards
 
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