Check eng light

Tiny
RONALD GABRIEL
  • MEMBER
  • 1999 CHEVROLET TAHOE
  • 99,000 MILES
P430 code new cats and new sensors. Light still comes on with that code at app 120 miles. Can a bad egr valve effect that. Or any other ideas of what going on Tahoe runs okay except for light?
Do you
have the same problem?
Yes
No
Tuesday, April 30th, 2013 AT 4:10 AM

3 Replies

Tiny
HMAC300
  • EXPERT
Check for an air leak between first O2 and last O2 sensor. Or from engine to back
Was this
answer
helpful?
Yes
No
Tuesday, April 30th, 2013 AT 5:42 AM
Tiny
RONALD GABRIEL
  • MEMBER
No leaks can the egr being bad cause this
Was this
answer
helpful?
Yes
No
Tuesday, April 30th, 2013 AT 9:32 AM
Tiny
HMAC300
  • EXPERT
It cold check that for being plugged opn or a clogged passageway or leaking air
Was this
answer
helpful?
Yes
No
Tuesday, April 30th, 2013 AT 9:56 AM

Please login or register to post a reply.

Recommended Guides