Check engine Light


Old 03-05-04, 09:45 PM
nelson knowles
Visiting Guest
Posts: n/a
Check engine Light

My 1996 5.7L V8 chevy 1500 P/U check engine lwas is on. Had it scan they say it was o2 sensor. I put in brand new sensors the light come back on with in 2 hours or 10 mile drive. Get it scan again . The scan say o2 is reading lean what must I do to stop it.
Sponsored Links
Old 03-06-04, 03:46 AM
Desi501's Avatar
Join Date: Oct 2003
Location: Boynton Beach Florida
Posts: 2,207
First, stop changing O/2 sensors. It's only reporting the true facts, you have lean exhaust. You need to look at things like a severe vacuum leak, low fuel pressure etc. look very closely at things like the PCV feed hose and other vacuum feeds.
Old 03-06-04, 08:20 AM
Join Date: Feb 2004
Location: So Cal
Posts: 248
check engine light


Desi's right. The MOST COMMON rookie mistake is automatically replacing the part associated with the code.

The code is telling you what CIRCUIT is affected. Then you've got to figure out the underlying cause. Yes, it could be the part, the wiring (short or bad ground), fuel supply, vacuum leaks or a myriad of other problems.

You need to look a little deeper into the cause before you can get the PROPER fix.


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Display Modes