idles inconsistant at stop lites and excelleration until about 3500-4000 rpms, see below

1998 FORD MUSTANG
150,000 MILES
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SCOTTAGE
  • MEMBER
  • 1 POST
i have changed the following: IAC, fuel pressure regulator, fuel pump, MAF, plugs and wires, o2 sensors, and TPS...I give up...help!
Nov 1, 2011 at 6:24 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Have you checked for vacuum leaks? EGR?
Nov 1, 2011 at 6:28 PM
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