P2004 intake manifold runner stuck open. Mechanical issue with runner flaps, vacuum diaghram, vacuum hoses incorrectly fitted or intake flap control solenoid is open circuit.
Maybe you should include engine type 1.6/1.8/2.0, diesel or petrol, pzev, US or euro. Duratec or zetec.
There are many variations and models in 2005 due to a change in engine designs and body shape.
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Wednesday, January 16th, 2013 AT 10:21 PM