1994 Honda Accord emisstions

1994 HONDA ACCORD
Avatar
EE
  • MEMBER
  • 1 POST
Engine Performance problem
1994 Honda Accord 4 cyl Front Wheel Drive Manual

my hc level is 324 and my co% is 10.37 will a egr valve and a o2 sensor drop this and will a bad egr valve make it idel up and down win its cold the revs softens as it gets warm win warm she off no prob
Mar 4, 2009 at 4:58 PM
Advertisement
Avatar
F4I_GUY
  • CERTIFIED EXPERT
  • 3,302 POSTS
A poorly functioning EGR system will mostly create higher NOx levels.

An oxygen sensor will affect HC and CO. Get those oxygen sensors scoped out.

Also, if you need a tune-up, that will cause excess emissions as well.
Mar 4, 2009 at 5:23 PM