dirtysouth_msp
Member
- :
- 2003.5 Blazing Yellow MSP (Forged)
25FConv said:Lol well first thanks for the pwning lesson(homework) I was thinking it was a vacuum leak early on in the thread, but I have been over and over my vacuum lines spraying them with intake cleaner and zip tying away at them....but no beneficial result has yet to occur. I mean I will go through and replace all the t-connectors I have to make sure somehow they arent cracked. I checked the wastegate and had the wastegate checked....that seemed to be good. I made sure all the hose clamps on couplers and hoses was tight. Where after the TB was your leak? I will start from there again and work my way around the engine again. Thanks for the input.
P0171 is usually attributed to a vac leak of some sort. That diag procedure was just for P0031. EGR is attached to the Intake manifold, so that could very well be leaking. Intake manifold could be leaking. Any vac line or anything connected to a vac line could be leaking. That is all considered as "after the TB" because the vac lines are all tied into the Intake Manifold. Really any leak after the MAF can cause that P0171 code. An exhaust leak at the manifold can also make the 02 read lean.
I see you have the hiboost kit. I have the same kit and I found a crazy leak coming right out of the side of one of the cast aluminum pipes. It was a flaw in the casting of the main cold-side charge pipe. I used a smoke machine and saw smoke coming from directly underneath the BPV. I took the pipe off, plugged the ends, tested it again with the smoke machine and sure enough the was smoke coming right out of the aluminum. I never would have found it without the smoke machine. If I were you, I'd find a shop that has a smoke machine and have them test the vac side of things. Try to find one that will let you watch the test. You may be suprised what you find. You could buy a smoke machine but I think that they are several hundred $$$ and you need an air compressor to make it work so they are more suited in a shop, unless you have a bad-ass garage, lol.
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