hesitation, stalling, no response or delayed response in the gas pedal

2005 FORD FOCUS
142,000 MILES • 2.3L • 4 CYL • FWD • MANUAL
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LINDA OLIVER
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the car started stalling out after driving for awhile, and getting good and warm, it will hesitate, and wont accept gas when pressing on the accelerator, jerking and stalling out. I had a diagnostic ran, P0171 came back. I changed a broken vacuum control solenoid, and a MAF sensor, no change, two independent mechanics say they cannot find anything else wrong. I cannot drive the car at all. any ideas as to what else it could be? EGR? PCV? Head temperature sensor? Please help! Thanks!
Aug 16, 2016 at 6:29 AM
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SATURNTECH9
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So are you still getting the code p0171 ?
Aug 16, 2016 at 12:34 PM
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LINDA OLIVER
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yes.
Aug 17, 2016 at 3:04 AM
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LINDA OLIVER
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also found that there is a big crack in the air filter housing from when the car was wrecked before I got it, could that be an issue causing the P0171 code to keep popping up?
Aug 17, 2016 at 3:06 AM
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SATURNTECH9
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Yes that could cause the code also there could be still another vacuum leak as well. that is why I asked if there was ever a smoke test done on the vacuum system to find leaks?
Aug 17, 2016 at 6:03 AM
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LINDA OLIVER
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yes they said they did do a smoke test and that was the only vacuum leak that they found
Aug 18, 2016 at 6:04 AM
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SATURNTECH9
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The air box is broken before the maf sensor?Also has the fuel pressure been checked and the fuel filter been checked for being restricted?
Aug 18, 2016 at 12:23 PM
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LINDA OLIVER
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Yes the air filter housing is cracked before the maf, but the fuel pressure or fuel filter hasn't been checked yet

Aug 18, 2016 at 2:56 PM
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SATURNTECH9
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That's something that should be looked into then.
Aug 18, 2016 at 5:35 PM
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LINDA OLIVER
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alright, I will get it checked out and let you know the results, thanks so much for your help!
Aug 19, 2016 at 3:36 AM
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SATURNTECH9
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Your welcome that's what we're here for.
Aug 19, 2016 at 12:43 PM
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LINDA OLIVER
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changed the fuel filter, and fuel pressure is fine, but after test driving it started acting up again and smelled like a hot iron, so we looked under the car and the catalytic converter was glowing red, so this leads me to believe that it's been the catalytic converter all along causing the problems, what do you think?
Aug 21, 2016 at 2:52 PM
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SATURNTECH9
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That won't set the code p0171 have a back pressure test done on the exhaust to see if the cat is clogged.Too much fuel getting into the exhaust can cause the car to glow red also.
Aug 21, 2016 at 4:40 PM