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#1
05-07-2005, 02:45 PM
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2002 Ford Windstar Check Engine DTC P0171 "System Too Lean"?? Help
Hi, I pulled up this code P0171 because my check engine light is on.
Can somebody tell me how to start trouble shooting the problem?? Here's what I looked up so far: P0171 - System to Lean (Bank 1) The Adaptive Fuel Strategy continuously monitors fuel delivery hardware. The test fails when the adaptive fuel tables reach a rich calibrated limit. For lean and rich DTCs: Fuel system Excessive fuel pressure. Leaking/contaminated fuel injectors. Leaking fuel pressure regulator. Low fuel pressure or running out of fuel. Vapor recovery system. Induction system: Air leaks after the MAF. Vacuum Leaks. PCV system. Improperly seated engine oil dipstick. EGR system: Leaking gasket. Stuck EGR valve. Leaking diaphragm or EVR. Base Engine: Oil overfill. Cam timing. Cylinder compression. Exhaust leaks before or near the HO2Ss. A SHRTFT-1,2 PID value between -25% to +35% and a LONGFT-1,2 PID value between -35% to +35% is acceptable. Reading beyond these values indicate a failure. I need a trouble shooting flow chart!?? I have a 2002 Ford technical publication but I can't find any flow charts on it. My email is: [email protected] and it would be MUCH appreciated if somebody could send me something. 
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#2
05-07-2005, 08:41 PM
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Re: 2002 Ford Windstar Check Engine DTC P0171 "System Too Lean"?? Help
Search this forum...............P0171 is the most common code for Windstars and the troubleshooting of it has been discussed many times over.
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#3
10-29-2009, 07:47 PM
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Re: 2002 Ford Windstar Check Engine DTC P0171 "System Too Lean"?? Help
i have a 2000 ford windstar and i have the same codes on my van is p0171/p0174 how do i fix it the right way please thank you my email is [email protected]
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#5
10-29-2009, 10:21 PM
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Re: 2002 Ford Windstar Check Engine DTC P0171 "System Too Lean"?? Help
do a vacuum test to see if you've a vaccum leak.
this is what I had in my 99 Windstar.
__________________
2003 Chevrolet Impala LS 3.8L OHV 2002 Ford Taurus SE 3.0L OHV (sold) 1998 Ford Windstar LX 3.8L OHV (sold) 2002 Chevrolet Malibu LS 3.1L OHV (sold) 2004 Hyundai Accent GS 1.6L DOHC manual (sold) 1995 Oldsmobile Cutlass Supreme S 3.1L OHV (sold) 2002 Ford Crown Victoria Police Interceptor 4.6L SOHC (sold) A Windstar without having the check engine light is not a real Windstar. 
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#6
10-30-2009, 09:28 AM
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Re: 2002 Ford Windstar Check Engine DTC P0171 "System Too Lean"?? Help
Johnny and Brian, go here and look at PCitizen's post.
http://www.automotiveforums.com/vbul...d.php?t=338113 Through PCitizen's link, you will find detailed step by step pictures and instructions of making this fix. It is such a common problem that Dorman and other 3rd party parts manufacturers actually sell a kit (Isolator Bolt Kits) to fix this problem. If you follow it step by step, you will eliminate the problem once and for all. Going on 1.5 yrs now.
__________________
2003 Windstar LX 1998 4dr Civic LX
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#7
10-30-2009, 07:13 PM
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Re: 2002 Ford Windstar Check Engine DTC P0171 "System Too Lean"?? Help
This Website is good also: http://www.leckemby.net/windstar/windstar01.html.
I used it to repair my problem.
__________________
2003 Chevrolet Impala LS 3.8L OHV 2002 Ford Taurus SE 3.0L OHV (sold) 1998 Ford Windstar LX 3.8L OHV (sold) 2002 Chevrolet Malibu LS 3.1L OHV (sold) 2004 Hyundai Accent GS 1.6L DOHC manual (sold) 1995 Oldsmobile Cutlass Supreme S 3.1L OHV (sold) 2002 Ford Crown Victoria Police Interceptor 4.6L SOHC (sold) A Windstar without having the check engine light is not a real Windstar.
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