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My audi a6 goes into limp mode with maf plug in

My audi a6 2.o diesel '07' goes into limp mode when the maf is plug in. I have changed the maf but still have the problem. When its plugged in the car will accelerate very slowly and at times full power comes in and as long as I keep accelerating it will build speed as normal. If I unplug the maf it works fine apart from lots of black smoke when I accelerate. Please help me.... What else could cause intermittent limp mode when maf is plugged in but not when unplugged bearing in mind I have tried two new mafs. The car has done 120 k

Posted by Anonymous on

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6ya6ya
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Posted on Jan 02, 2017

  • 138 Answers

SOURCE: Audi A6 3.0 tdi Quattro 2005, glow plug light comes on, limp mode

16619 -Engine boost condition - Limit not reached. Check intake hoses/ connections for leaks. Check Turbo charger waste gate regulating valve/ waste gate working correctly. Must move freely when accelerating, won't achieve full boost if waste gate sticking open. Check Turbo impeller turning freely, oil feed pipe for turbo can get blocked causing impeller to seize. Engine compact, not easy to access these components.

Posted on Jun 06, 2010

  • 2 Answers

SOURCE: my 2000 gmc jimmly sle .. starts fine idles fine

Have someone check your fuel presure, it may be time to replace your fuel pump. It worked for me.

Posted on Nov 25, 2010

alicantecoli
  • 22095 Answers

SOURCE: I have a ford mondeo diesel tdci 130 2ltr 20006

sounds about right for what i think it is ,now remove the EGR valve and make a gasket from a coca cola can and do not cut the middle out ,so it blocks it off completely then try it as i am almost positive this is your problem .

Posted on Apr 04, 2011

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