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a8 tech · 04-09-2007, 04:01 PM

Whats the mileage,i bet its 40,000 miles plus.Possible cause without fault code or mil light,egr sticking open or tandem pump pressure loss.Disconnect egr valve vac pipe and try that.WARNING LIGHT WILL COME ON.

04-09-2007, 04:01 PM	#2 (permalink)
a8 tech Expert Join Date: Apr 2007 Location: not telling you Posts: 648 Gallery: (0)	Whats the mileage,i bet its 40,000 miles plus.Possible cause without fault code or mil light,egr sticking open or tandem pump pressure loss.Disconnect egr valve vac pipe and try that.WARNING LIGHT WILL COME ON.