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

1996 TOYOTA COROLLA
164,000 MILES
Avatar
GEORGE RRRR
  • MEMBER
  • 2 POSTS
checked egr valve working fine
Mar 2, 2012 at 4:25 PM
Advertisement
Avatar
RASMATAZ
  • CERTIFIED EXPERT
  • 75,992 POSTS
Check the EGR valve transducer and the vacuum switching solenoid
Mar 2, 2012 at 4:28 PM
Avatar
WRENCHTECH
  • CERTIFIED EXPERT
  • 20,761 POSTS
Also check for a plugged passage in the intake manifold.
Mar 2, 2012 at 4:32 PM
Advertisement