2003 Ford Focus Surging

2003 FORD FOCUS
94,000 MILES • 4 CYL • FWD • AUTOMATIC
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FREEBIRD1970
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Got an 03 Ford Focus with a 2.0 split port injection.changed O2 sensors Mass air flow air filter gas filter spark plugs and wires PCV valve MAP sensor EGR tube.What else would case it to serge while stopped or in park?Runs fine at higher idle.Also tried the Throddle position sensor.
Dec 11, 2009 at 12:19 AM
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RASMATAZ
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Try cleaning out the idle air control valve and check fuel pressure
Dec 11, 2009 at 3:01 AM
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FREEBIRD1970
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Tried the air control valve.Even tried a couple used ones.Could they all be bad?Did not check fuel pressure yet,had it on the computer and nothing came up for fuel pump or anything like that?
Dec 11, 2009 at 11:08 AM
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RASMATAZ
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When was the last tune-up ? Have you check for vacuum leaks and the fuel pressure
Dec 11, 2009 at 1:33 PM
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FREEBIRD1970
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Last tune up was like 2 months ago.The EGR tube was broken there are no vacume leaks that I could find changed both hoses on the EGR tube they were getting pretty bad,have'nt checked pressure yet but will ASAP.Thanks for the input so far it's becoming a real brain bender for me!LOL.
Dec 11, 2009 at 1:50 PM