2002 Ford Windstar Check Engine DTC P0171 "System Too Lean"?? Help

[Johnny916]

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: Johnny916@aol.com and it would be MUCH appreciated if somebody could send me something.

[DRW1000]

Search this forum...............P0171 is the most common code for Windstars and the troubleshooting of it has been discussed many times over.

[brian25]

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 babyjoe6362@yahoo.com

[veerg]

Read the frigging first line on the main page.

[serge_saati]

do a vacuum test to see if you've a vaccum leak.
this is what I had in my 99 Windstar.

[mundy5]

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.

[serge_saati]

This Website is good also: http://www.leckemby.net/windstar/windstar01.html.

I used it to repair my problem.