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02 Zafira down in power

  • 19-06-2013 1:21pm
    #1
    new2me
    Registered Users Posts: 142 ✭✭


    Got 2002 2.0 litre dti zafira thats low on power, no warning lights on dash


Comments

  • #2
    Zcott
    Registered Users, Registered Users 2 Posts: 3,206 ✭✭✭Zcott


    Change up into second gear.


  • #3
    jimgoose
    Registered Users, Registered Users 2 Posts: 20,180 ✭✭✭✭jimgoose


    Diesel of petrol? If petrol you should be able to pull some DTC fault codes.


  • #4
    shamwari
    Closed Accounts Posts: 2,142 ✭✭✭shamwari


    The DTi has a couple of candidates for causing a down on power engine WITHOUT a MIL on. If its smokey, an EGR valve stuck open or leaky intake trunking are likely.

    If there's no smoke, the MAF is a likely cause - especially if it's a Bosch. Disconnect it and see if the car improves.

    If you don't know the car's history, change the fuel filter. They can clog if neglected.

    Failing all of this, I'd be looking at a code scan and live data read, even if the MIL is not on. Although to be fair, these things have a habit of putting the MIL on at the drop of a hat. :D


  • #5
    new2me
    Registered Users Posts: 142 ✭✭new2me


    Zcott wrote: »
    Change up into second gear.

    now thats not very helpful


  • #6
    new2me
    Registered Users Posts: 142 ✭✭new2me


    shamwari wrote: »
    The DTi has a couple of candidates for causing a down on power engine WITHOUT a MIL on. If its smokey, an EGR valve stuck open or leaky intake trunking are likely.

    If there's no smoke, the MAF is a likely cause - especially if it's a Bosch. Disconnect it and see if the car improves.

    If you don't know the car's history, change the fuel filter. They can clog if neglected.

    Failing all of this, I'd be looking at a code scan and live data read, even if the MIL is not on. Although to be fair, these things have a habit of putting the MIL on at the drop of a hat. :D

    Was thinking it could be a MAF myself, will try that tomorrow and see how it goes...cheers


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  • #7
    shamwari
    Closed Accounts Posts: 2,142 ✭✭✭shamwari


    new2me wrote: »
    Was thinking it could be a MAF myself, will try that tomorrow and see how it goes...cheers
    Bosch MAF's aren't great, cheap Chinese replacements on eBay are woeful and to be avoided. Pierburg MAF's are best of the lot.


  • #8
    new2me
    Registered Users Posts: 142 ✭✭new2me


    these can be cleaned i believe


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