2003 Ford Focus Surging

Tiny
FREEBIRD1970
  • MEMBER
  • 2003 FORD FOCUS
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 94,000 MILES
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.
Friday, December 11th, 2009 AT 12:19 AM

4 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Try cleaning out the idle air control valve and check fuel pressure
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Friday, December 11th, 2009 AT 3:01 AM
Tiny
FREEBIRD1970
  • MEMBER
  • 3 POSTS
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?
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Friday, December 11th, 2009 AT 11:08 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
When was the last tune-up? Have you check for vacuum leaks and the fuel pressure
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Friday, December 11th, 2009 AT 1:33 PM
Tiny
FREEBIRD1970
  • MEMBER
  • 3 POSTS
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.
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Friday, December 11th, 2009 AT 1:50 PM

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