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Zafira Loss of Power

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geezer1

Post subject: Zafira Loss of Power

Posted: Mon Jan 16, 2012 6:01 pm

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The car starts up ok and begrudingly ticks over at about 400rpm. When you press the accelerator to increase the revs nothing happens it just sirs at 400rpm
Anyone got any ideas
cheers

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Raf

Post subject: Re: Zafira Loss of Power

Posted: Tue Jan 17, 2012 12:59 am

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petrol or diesel?

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geezer1

Post subject: Re: Zafira Loss of Power

Posted: Tue Jan 17, 2012 5:49 pm

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Petrol thanks for showing an interest

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kellys_eye

Post subject: Re: Zafira Loss of Power

Posted: Tue Jan 17, 2012 7:16 pm

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Accelerator cable? If not then it's an open circuit throttle position indicator (TPI) potentiometer.

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Blakey

Post subject: Re: Zafira Loss of Power

Posted: Tue Jan 17, 2012 8:46 pm

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What age and what cc? some models don't have a throttle cable, (fly by wire) possible ECU or ECU control relay, is the engine management light on?

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geezer1

Post subject: Re: Zafira Loss of Power

Posted: Tue Jan 17, 2012 9:12 pm

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1.8 petrol 53 reg
the management light came on about 6 months ago for about 3 days, but strangely went off when i went over a speed bump ( yes i thought strange too) so i just thought it was a loose wire or something.
Other than that it been ok

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btcc

Post subject: Re: Zafira Loss of Power

Posted: Tue Jan 17, 2012 10:34 pm

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i suspect either e.g.r valve or air mass meter

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Raf

Post subject: Re: Zafira Loss of Power

Posted: Wed Jan 18, 2012 2:30 am

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egr's do get stuck on many makes; PITA they are.... OP worth giving this a clean andf checking he valve seats properly.

MAF can be checked by unpluging and starting the car.

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root

Post subject: Re: Zafira Loss of Power

Posted: Wed Jan 18, 2012 10:07 am

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zafira's have a common egr problem... usually manifest in loss of power, think they reccommend a replacement valve or removing it all together, also could be pedal switch or a broken wire somewhere in the loom....

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geezer1

Post subject: Re: Zafira Loss of Power

Posted: Wed Jan 18, 2012 7:41 pm

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Thanks all, it was the egr you clever people

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btcc

Post subject: Re: Zafira Loss of Power

Posted: Fri Jan 20, 2012 9:02 pm

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no problem

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