Results 1 to 4 of 4

Drive cycle and slow codes

This is a discussion on Drive cycle and slow codes within the External Engine forums, part of the LSx Technical Help Section category; I previously had a P0420 code that supposedly indicates a bad convertor. I had reset the codes 3 times, and ...

  1. #1
    Member VTR99's Avatar
    Join Date
    Aug 2007
    Location
    St. Louis
    Posts
    161

    Red
    2002 TA WS6

    Drive cycle and slow codes

    I previously had a P0420 code that supposedly indicates a bad convertor. I had reset the codes 3 times, and it kept coming back. Finally I pulled the bank 1 O2 sensor, and sprayed it down with brake clean. A bunch of black residue came off, so I let it dry and screwed it back in. The code has not come back after 3 drive cycles of about 12 miles, and letting it cool down each time. The problem now is that the scanner is still showing the OH and EV tests pending. I have tried to follow the GM Drive Cycle instructions, but these tests still have not run after a 25 mile run this morning. Any ideas?

  2. #2
    Senior Member
    Join Date
    Jul 2005
    Location
    Jacksonville, FL
    Posts
    2,725
    You pulled the bank 1 rear sensor for P0420, right? Why didn't you get the dealer to look at it, are you past 120K? Put some more miles on it.

  3. #3
    Member VTR99's Avatar
    Join Date
    Aug 2007
    Location
    St. Louis
    Posts
    161

    Red
    2002 TA WS6

    It's only got 11,000 miles on it. I did get the dealer to check the code, they wanted to put a new converter on it. I thought it sounded pretty stupid for a converter with only 11k miles, and I don't really like anyone working on my cars. The last time I let a dealer service one of my cars under warranty they cross threaded a spark plug and ended up putting a Heli Coil kit on it. You can't imagine how pissed I was. My 2 best friends are mechanics, so I hear a lot of stories that are far worse.

    An yeah, it was the Bank 1 sensor on the driver's side just after the converter. I read somewhere that the converter and sensor can collect a lot of crap if the car doesn't get driven far enough to heat it up completely. Considering the extremely small town where I bought the car, and the 2,000 miles a year it got driven, this made sense.
    Last edited by VTR99; 08-23-2007 at 08:14 PM. Reason: More info

  4. #4
    Member VTR99's Avatar
    Join Date
    Aug 2007
    Location
    St. Louis
    Posts
    161

    Red
    2002 TA WS6

    Drove it another 50 miles this morning, and followed the GM Drive Cycle as close as I could. The OH test finally ran, but the EV is still flashing on my INNOVA 3100 indicating it has not run. Sorta ironic that I need to burn 20 gallons of premium to get the car to the point where it can get emissions tested.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Help: Cooling fan will not cycle off!
    By Jjohnson2 in forum External Engine
    Replies: 1
    Last Post: 10-05-2009, 05:17 PM
  2. Help: OBD ll system not ready, ? drive cycle
    By Acceleration Junky in forum Computer & Tuning
    Replies: 2
    Last Post: 05-08-2008, 07:49 AM
  3. What does %100 duty cycle REALLY mean?
    By ericwilloughby in forum Computer & Tuning
    Replies: 19
    Last Post: 11-21-2006, 05:19 PM
  4. Is there a duty cycle gauge?
    By ericwilloughby in forum Computer & Tuning
    Replies: 7
    Last Post: 11-20-2006, 03:45 PM
  5. new hybrid motor cycle!!!
    By Spaz in forum Almost Anything Goes
    Replies: 20
    Last Post: 05-16-2006, 07:28 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •