code po401, checked egr valve w/vacurm tester, holding presure, what should i check for next

1996 TOYOTA COROLLA
164,000 MILES
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GEORGE RRRR
  • MEMBER
  • 2 POSTS
checked egr valve working fine
Mar 2, 2012 at 8:25 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Check the EGR valve transducer and the vacuum switching solenoid
Mar 2, 2012 at 8:28 AM
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WRENCHTECH
  • ✓Experienced Mechanic
  • 20,760 POSTS
Also check for a plugged passage in the intake manifold.
Mar 2, 2012 at 8:32 AM
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