I think it means air is escaping from the atmosphere and into your engine.pacent said:If a vacuum hose is broken, doesnt that mean air is escaping somewhere and causing the engine to run too rich? :???:
Divertor Valve.What does DV stand for?
DoNotPassatGo said:Well I have more information about this P0171 CEL. I started trying to replace the vacuum line on the DV and in the process of trying to cut the one-time use clamp off the vacuum connector of the DV I snapped off the tube.
So Monday I ordered a Forge DV. Figured the metal one might be a bit stronger and also ordered 4mm silicone vacuum line. In the meantime the vacuum line is hanging uncconected from the DV.
I noticed this morning that the CEL no longer is on!!! I guess this confirms that the DV/vacuum line was the culprit.
I figured I'd pass along this info in case anyone else has a P0171 CEL and wants to see if it is the DV or its vacuum line
I suggest you replace all your vacum hoses with silicone hoses to prevent any more boost leaks. Plust those OEM hoses are not the best. Make sure u don't break off those nipples. I heard that they're not cheap. I was able to pull some of those hoses off just by pulling on the hose and using a straight screw driver to assist. I woulnd't recomment using vicegrips to pull the one time clamps off. Here is a pic of all 4 hoses that should be replaced. Originally posted by Dan.DoNotPassatGo said:The DV line on my engine ( AUG ) is very hard to get at where it attaches to the manifold. Maybe I just need a different screwdriver to wedge it open. I see someone used vicegrips. I'm afraid of breaking off the nipple on the manifold
where it attaches.