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Collapsed hose + eractic idle please help

gearhead

By gearhead
in 996 TT, 996 TT S, 996 GT2

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gearhead Member

gearhead

Posted
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hey everyone here is a diagram from my 2001 996 turbo regarding slow responsive throttle and eractic idle. (car will idle smooth then suddenly struggle almost stall and recover). When you slowly put in throttle (car stationary) the car feels sluggish at first then after a certain point in revs just fine. Looked for loose hoses and a sucking sound but instead I found a hose that is being sucked flat (#26 in diagram) when the car is idling and when you shut it off it returns to normal. Not sure why this is happening but could that be the issue that is causing the check engine light code P0103? Not the MAF? This came on suddenly and the car was running perfect up to this point. I had already installed plugs and a new oem air filter a month ago with no issues

post-27027-1207729331_thumb.png

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gearhead Member

gearhead

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ordered new hose comes in tomorrow but I still don't know why this happened? The porsche dealer was no help they say they haven't heard of this before, but anything is possible(thanks porsche). It goes into the intake through a T connector, not sure if this is a servicable part but you have to buy the whole pipe not just the connector #13 in diagram. Has anyone replaced this part already and can look into the pipe to see what it looks like(is it just a staight connector or does it have a valve inside?). Or if their is any inline filters that also run with these lines that could be plugged causing my collapsed hose.

post-27027-1207769309_thumb.png

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gearhead Member

gearhead

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  • Author
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ordered new hose comes in tomorrow but I still don't know why this happened? The porsche dealer was no help they say they haven't heard of this before, but anything is possible(thanks porsche). It goes into the intake through a T connector, not sure if this is a servicable part but you have to buy the whole pipe not just the connector #13 in diagram. Has anyone replaced this part already and can look into the pipe to see what it looks like(is it just a staight connector or does it have a valve inside?). Or if their is any inline filters that also run with these lines that could be plugged causing my collapsed hose.

post-27027-1207769309_thumb.png

no one has any ideas?

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  • 2 weeks later...
T2_996420 Member

T2_996420

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Posted

I think that is a check valve off of the evap emissions control system - if I read the diagram correctly anyway. How do I know I just replaced mine two weeks ago along with the carbon canister (#14 in the second diagram you posted). Good luck. T2

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