Campaign on the 1.6THP in the C4
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  1. #1
    bbg
    bbg is offline
    Tadpole
    Join Date
    Jan 2011
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    Eltham,Victoria
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    17

    Default Campaign on the 1.6THP in the C4

    Hi All, I posted about my problem previously. An update that might assist another C4 owner with an early 1.6THP engine. Bottom line is if you have a C4 with an earlier 1.6THP, contact your Citroen dealer (if you have one!) to see if there is an outstanding campaign on it.

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    Since Citroen had more than their share of dealership and importer changes 3 years after my purchase and the warranty was over anyway, I was essentially 'encouraged' to go to an independent specialist shop for maintenance. After getting little joy from my 'Citroen Specialist' shop in Melbourne area I went to a local shop who told me more about my engine in 15 minutes and was more responsive than the 'Specialist' over 3 years. The only symptom was a depollution fault (P0011 fault code) on the 1.6THP engine in a 2009 C4, with a list of things it could be from the Bosch fault docs.

    The local shop suggested I contact Citroen since it is a common problem on all makes with the 1.6THP engine and starts at fairly low kms and some manufacturers were reported to provide some support. New info! I do not drive a lot and the fault started at about 22K kms 2 years back and a few things got tried that were not 'the solution'. So I contacted Citroen.

    I discovered there is a campaign on the early engines for the timing chain, related parts, and the water pump. Citroen to their credit took care of the lot (I am the original new car purchaser and have no idea if that was germane, but)! The P0011 could have been the chain but the dealer thought it was more likely the timing dephaser so that got replaced with the other work, and not expensive.

  2. #2
    1000+ Posts
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    Jun 2013
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    Sydney
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    Default

    There can't be many unfixed early engines still running by now. Dealers did the work as the cars came in, and most independents knew about it and referred owners.

    The next thing for you to watch for is cacking up of the inlet valves and inlet ports by ash from burnt off oil vapour. Mine lasted about 50k km. It is a problem with all direct petrol injection turbo engines of any make. Misfiring and the pollution fault should lead you to consider this. Regular use of dissolving sprays is often recommended, but it didn't save my engine.

    The latest recommendation is use of low ash C2 oil, as for the diesels.

  3. #3
    Fellow Frogger!
    Join Date
    Jan 2015
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    141

    Default

    What oil are you using 0w30 by total is the only oil recommended by PSA for this engine regardless of emission standards.

  4. #4
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    Total's Quartz Ineo ECS is low ash ACEA C2 spec. 0.69% sulphated ash content according to the literature.

  5. #5
    1000+ Posts
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    Penrite have now brought out ENVIRO+ C2 0W-30, which claims to satisfy ACEA C2, PSA B71 2290 and B71 2312. It produces 0.8% sulphated ash by mass. They recommend it for Ford Mondeos, whose diesel engines we are familiar with.

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