Mechanics

FORD FOCUS SENSOR PROBLEM

2003 Ford Focus • 128,100 miles

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.
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Ash77777
April 1, 2013.




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

Tiny
Randico
Apr 1, 2013.
Also check the pcv hose as it is common for failing back at the throttle body

Roy
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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.

Tiny
Ash77777
Apr 5, 2013.

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