2001 Ford F150 emmisssions

2001 FORD F-150
70,000 MILES • 4 CYL • 4WD • MANUAL
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SABRES1981
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  • 1 POST
I have a check engine light that keeps coming on. first it has i was running to lean have replaced 02 sensors air intake sensor and now egr valve. i clear the codes and the light keeps coming back on any suggestion on what it could be
Nov 16, 2009 at 8:45 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
If the same code keeps coming up, chances are you have a vacuum leak somewhere. It could be a vacuum hose, intake gasket...

When more air is allowed into the system, the engine will run lean.

Let me know what you find or if you have other questions.

Joe
Nov 16, 2009 at 1:25 PM
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