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Check Engine Light- P0171 Generic Fault

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Check Engine Light- P0171 Generic Fault

 
Old 05-06-2010, 12:21 PM
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Is it the one at the rear of the engine or the one at the radiator itself?
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Old 05-06-2010, 12:26 PM
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Near the intake.
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Old 05-06-2010, 12:31 PM
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already replaced that one in the last year (leaking)
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Old 05-06-2010, 12:32 PM
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Any luck with cleaning the MAF then?
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Old 05-07-2010, 05:32 AM
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Default Found my problem

I don't know if this could help you dspur15, but I just found my problem, just have to order the part. The problem is the Crankcase vent valve leaking into the crankcase. Real easy to find when you know what it can do... Go at the intake manifold, just rear of your throtle body, you got 2 vaccum line. Disconect your foward lower one and stick your finger on it. Then start your engine (that part require 2 person...). If your idle now run's fine, your problem is the crankcase vent valve which is the part at the other end of the line you just disconected. I don't know if that fix apply to you, but it seems like a pretty common problem with this engine.
Good luck
Any question, I'll stick around for some days.
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Old 02-17-2017, 09:54 PM
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Originally Posted by Mitsum View Post
I don't know if this could help you dspur15, but I just found my problem, just have to order the part. The problem is the Crankcase vent valve leaking into the crankcase. Real easy to find when you know what it can do... Go at the intake manifold, just rear of your throtle body, you got 2 vaccum line. Disconect your foward lower one and stick your finger on it. Then start your engine (that part require 2 person...). If your idle now run's fine, your problem is the crankcase vent valve which is the part at the other end of the line you just disconected. I don't know if that fix apply to you, but it seems like a pretty common problem with this engine.
Good luck
Any question, I'll stick around for some days.

Whats the forward lower vacuum? Is it the one connected to the crankcase breather valve? like with the T connecter? I feel like mine is bad and I want to know which hose to test exactly. could you post a pic?
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Old 02-17-2019, 05:15 AM
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Default Turbo Inlet tube

This may sound dumb but check your turbo inlet tube. The point where it connects to the turbo became soft and would leak really badly when warm until it got so bad it wouldn't start. Try unplugging the MAF and running the car without it. If that evens out your idle then it may be your problem.
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