2003 Ford Focus Car Runs Good Parking Idles Just Turns Off O2 Sensors Bad

2003 FORD FOCUS
128,100 MILES
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ASH77777
  • MEMBER
  • 32 POSTS
my car runs good but when in parking it idles..then it just turns off...the o2 sensors are bad and this car i have been working on for a while, it has original fuel pump and fuel regulator,
Apr 1, 2013 at 6:20 AM
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RANDICO
  • CAR REPAIR CONTRIBUTOR
  • 174 POSTS
The 02 sensor just monitor the engine condition,The ECM uses the 02 sensor for fuel control,When the vehicle stall in park you have a IAC (idle air control) problem
Apr 1, 2013 at 7:31 AM
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ASEMASTER6371
  • CAR REPAIR CONTRIBUTOR
  • 52,796 POSTS
also check the pcv hose as it is common for failing back at the throttle body


Roy
Apr 1, 2013 at 10:47 AM
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ASH77777
  • MEMBER
  • 32 POSTS
could u tell me the part number for the pcv in my car, auto part gave the wrong one...should i put a clip on the hose at the throttle body to keep it steady? thank you...
Apr 5, 2013 at 2:18 AM
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