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#1
02-28-2008, 08:06 PM
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0171,0174 codes
I'm getting trouble codes 0171,0174 bank1 and bank2 too lean. I just did a complete tune-up on it and also pulled the trottle body and cleaned the EGR
ports to clear the 04901 code. This worked!!! I also went ahead and changed the EGR valve, EGR sensor,and the EGR solenoid for good measure. I can't figure why now im getting the bank1,2 codes. Anyone had this same problem? 
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#2
02-29-2008, 06:09 AM
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Re: 0171,0174 codes
Youve got a vacuum leak now. I'd check around the TB first.
You did buy new TB and EGR gaskets right?
__________________
 "The CEG Nazi" www.contour.org 1996 Ford Contour SE - Sold 3.0L V6 and Arizona Dyno Chip Turbo Kit 364 whp, 410 wtq @ 16 psi and only 4,700 rpms. 1999 Tropic Green SVT Contour - Bone stock and MINT
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#3
03-03-2008, 09:06 AM
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Re: 0171,0174 codes
I didn't buy a new TB but I did get a new EGR gasket. I did how ever find a posible vacum leak were the main vacum line plugs into the pcv valve. The conector that locks the vacum line to the valve is broken and I can pull it loose. The good thing is that it also tells me that the PCV valve is good because when i pull it loose the engine idle changes. I could here it sucking air when my bro. reved the engine. I'm going to see if I can find a new vacum line for it. I'm sure i'll need to get it from the dealer because I can't find it on autozone's web site or advance auto's web site.
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#4
01-29-2011, 10:05 AM
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Re: 0171,0174 codes
I had this same problem and went to 3 diffrent shops (because I could not figure it out). Finaly I was told it was and replace the lower intake manifold. The rods that support the seconday butterflies have some sort of seal. The seal went bad. I could not find any one to rebuild it or could I find the parts to rebuild it. Good luck
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#5
01-29-2011, 08:32 PM
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Re: 0171,0174 codes
A Smoke test would of pinpointed this leak!
Some shops, like to take a little problem, and turn it into a Major project @ the customers expense.
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#6
01-29-2011, 09:27 PM
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Re: 0171,0174 codes
Quote:
__________________
"The CEG Nazi" www.contour.org 1996 Ford Contour SE - Sold 3.0L V6 and Arizona Dyno Chip Turbo Kit 364 whp, 410 wtq @ 16 psi and only 4,700 rpms. 1999 Tropic Green SVT Contour - Bone stock and MINT
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