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Thread: Engine Hunting

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  1. Engine Hunting 
    #1
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    Hi,

    I have an A8 3.0 TDI 2007. my engine has starting hunting when idle and also when driving. Had a look under the bonnet and can see a solenoid flicking back and fore in the top centre of the engine bay. Anyone know what this part is or a link to it?

    Iíve got a pic and video but canít see where to upload on this forum.



    thanks,

    Nigel.
     
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  2. Re: Engine Hunting 
    #2
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    See if you can load to your gallery. Vid may need zipping as ZIP is an allowed file type.
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  3. Re: Engine Hunting 
    #3
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    Sounds like it is the EGR cooler vacuum solenoid. https://www.ebay.co.uk/itm/Exhaust-g...-/233171554596 Try using a hand vacuum pump to check the vacuum system for leakdown. If the pipes are air-tight, try the vacuum solenoid for the EGR (not EGR cooler). I think it is the one nearby that says MADE IN USA on a round cover on the top, if not it is the one behind the headlight near the fans.
    Audi A8L- 2006 - 3.0TDI
     
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