Check Engine
Thread Starter
Cruising
Joined: Apr 2017
Posts: 10
Likes: 0
From: Topeka, Kansas
Check Engine
My check engine light came on. Had it diagnosed and they said the EGR valve was completely seized and the o2 sensors before and after the cat converter were bad.
They fixed those and I drove for about a day and the check engine light came on again.
What could it be?
This is on my 1996 Corvette C4
They fixed those and I drove for about a day and the check engine light came on again.
What could it be?
This is on my 1996 Corvette C4
Last edited by tgeary; Apr 12, 2017 at 11:06 PM.
Race Director
Joined: Oct 2011
Posts: 16,091
Likes: 819
From: Dallas Texas
2025 C4 of the Year Finalist - Modified
Just because there is a code for the o2 sensors, doesn't mean they are bad. They could have been reading rich or lean for whatever reason and there could have been a "rich o2" or a "lean o2", doesn't mean they are bad. I would read the code(s) and report back here.
Last edited by 1993C4LT1; Apr 12, 2017 at 11:27 PM.
Melting Slicks
Joined: May 2013
Posts: 2,692
Likes: 349
From: Sacramento California
Here are a few threads for your reading:
https://www.corvetteforum.com/forums...ic-system.html
https://www.corvetteforum.com/forums...n-96-cars.html
https://www.corvetteforum.com/forums...ull-codes.html
Post #5 in the last link will show you the "paper clip" method of retrieving codes from your 1996. Be patient and write it all down before clearing.
Last edited by DGXR; Apr 13, 2017 at 11:44 AM.
Team Owner
Joined: Sep 2001
Posts: 62,160
Likes: 1,733
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Pull the code, see what it is yourself. We'll tell you what to fix.
In general, fix the code closest to the front of the car first and go backwards from there resetting each time. Usually one code spawns several others.
In general, fix the code closest to the front of the car first and go backwards from there resetting each time. Usually one code spawns several others.
Le Mans Master
Joined: Sep 2003
Posts: 8,812
Likes: 2,029
From: eastern NC
Oh, and welcome to the Corvette Forum!
GUSTO
