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p1131 p1151 p0171 p0174


jhopper30
03-29-2004, 06:54 AM
p1131 p1151 p0171 p0174

took my 95 windstar w/3.8 to autozone and got these 4 codes. I've read alot about the 171, 174 codes, but does anybody have any suggestions about the other 2 codes? The van runs ok from about 0 to half throttle, but starts to run rough and no power from half to full throttle. Also, installed new air filter, plugs, and fuel filter. after replacing the fuel filter it did run better but did not completely fix the problem. Thanks

rodeo02
03-29-2004, 08:34 AM
These codes indicate a lean condition on both cylinder banks. Check here: http://www.troublecodes.net/OBD2/Pcodes.shtml I would suspect a leaking intake manifold gasket(s).
G/luck
Joel

ModMech
03-29-2004, 10:03 AM
Clean the MAF sensor. A dirty Mass Air Flow sensor will cause lean conditions, set those codes, and make it run like it has little power. The way to tell almost for sure if it is a dirty/bad MAF sensor is if it drives well for the FIRST 2-3 minutes after a cold start, then you've found the problem.

Here's an article on clening MAFs: http://www.crownvic.net/tech/cleanmaf.html

rodeo02
03-29-2004, 10:50 AM
Yep. Good call on a dirty MAF. That a LOT easier and much less $$ that the IMG's too :cheers: .
G/luck
Joel

jhopper30
03-29-2004, 01:34 PM
thanks for the info
I will try cleaning the maf first.

jhopper30
03-31-2004, 06:10 PM
cleaned the maf today, and the van runs perfect. the lower filament had crud all over the backside of it (like a fan had been blowing over it). I just wanted to say thank you very much for the info and the replys. thanks very much.

rodeo02
03-31-2004, 06:13 PM
GREAT! good to hear it worked out for you :smile:
G/luck
JOel

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