Results 1 to 14 of 14

flashing ses light but no codes??

This is a discussion on flashing ses light but no codes?? within the Computer & Tuning forums, part of the LSx Technical Help Section category; Okay I am getting the occasional flashing ses light but have no codes to refer to.( p300,302,303 etc.) I have ...

  1. #1
    $ 25,000 panty dropper VENOMOUS's Avatar
    Join Date
    Jan 2008
    Location
    Waco
    Posts
    1,186

    2005 Ram SRT-10 QC 8.3l
    1999 FRC Black

    flashing ses light but no codes??

    Okay I am getting the occasional flashing ses light but have no codes to refer to.( p300,302,303 etc.) I have checked all the threads and found no solution. Changed plugs, wires, o2s cleaned MAF, NO luck. Please help!

  2. #2
    Member BlueMagicSS's Avatar
    Join Date
    Dec 2007
    Location
    Oakland, California
    Age
    29
    Posts
    295

    Candy Blue
    2000 Camaro SS

    A flashing SES or MIL light indicates you have a catalyst damaging malfunction in your engine. It could be a misfire or a rich running condition. If you have cats your best bet would be to shut the car off and get it to a shop ASAP. what mods do you have done or what did you do right before this problem started occurring?

    2000 Camaro SS, M6, Edelbrock LT's, Eibach Pro-Kit, Edelbrock Adjustable Coil-Overs
    1986 Camaro Iroc LS1 Swap In Progress

    Blue Magic...
    Like Pepsi It's A Brand Name...

  3. #3
    $ 25,000 panty dropper VENOMOUS's Avatar
    Join Date
    Jan 2008
    Location
    Waco
    Posts
    1,186

    2005 Ram SRT-10 QC 8.3l
    1999 FRC Black

    Quote Originally Posted by BlueMagic08 View Post
    A flashing SES or MIL light indicates you have a catalyst damaging malfunction in your engine. It could be a misfire or a rich running condition. If you have cats your best bet would be to shut the car off and get it to a shop ASAP. what mods do you have done or what did you do right before this problem started occurring?
    I understand what the light means after searching days of threads, but can't get a code to find out what might be the culprit. It's a daily driver for the most part and NOTHING was done prior to the flashing SES. I had noticed it got richer and richer over the past few months to the point of about 14 mpg when I could squeeze 20 -22 from her. Changed plugs, O2s , checked all wires and extensions, switched to the Corvette rears O2s, cleaned MAF, checked plug wires ( OHMs). Everything I could think of and was recommended by the members here and LS1TECH. Even replaced header gaskets with same results? Any other help is appreciated.
    No I don't have cats and am running an factory 346,tr230 rev. split, Hooker 1 7/8LT and catback with dump, UD pulley,MSDs, TR55@.055, 918 springs.

  4. #4
    - STOCK ish - Sarge91's Avatar
    Join Date
    Apr 2008
    Location
    Fairhope, Alabama
    Age
    26
    Posts
    779

    Black
    2002 Camaro SS SLP

    Did you get the Cats error code deleted?
    2002 Camaro SS A4 - SLP# 2951 l MS4 l LT's w/ORY l F.A.S.T 78 & TB l Borla l Cutout l CME l TCI 3500 l 3.23's l !emissions l !sway

  5. #5
    $ 25,000 panty dropper VENOMOUS's Avatar
    Join Date
    Jan 2008
    Location
    Waco
    Posts
    1,186

    2005 Ram SRT-10 QC 8.3l
    1999 FRC Black

    Quote Originally Posted by Sarge91 View Post
    Did you get the Cats error code deleted?
    From what I understand Yes. But after looking at a freeze frame I do show stft and ltft form 3&4 which I thought were post cat O2s?

  6. #6
    Member BlueMagicSS's Avatar
    Join Date
    Dec 2007
    Location
    Oakland, California
    Age
    29
    Posts
    295

    Candy Blue
    2000 Camaro SS

    So it's adding fuel.... that's interesting.... I was gonna say check the injectors for a leaky one until you said that..... but now I'm kinda at a loss.... That's real odd....

  7. #7
    Senior Member mrr23's Avatar
    Join Date
    Jul 2005
    Location
    orlando, fl
    Posts
    7,134

    dark bowling green
    2000 corvette

    a flashing SES light means there is a misfire. plug, wire, coil.

  8. #8
    Member BlueMagicSS's Avatar
    Join Date
    Dec 2007
    Location
    Oakland, California
    Age
    29
    Posts
    295

    Candy Blue
    2000 Camaro SS

    It just occured to me... did you check the history and maturing codes or just the current codes?? Also if you have a scanner you may want to let the car run for a few while checking the data and see if you see anything irregular

  9. #9
    TunedbyFrost.com Tuner Frost's Avatar
    Join Date
    Jul 2007
    Location
    Richmond VA
    Posts
    2,415

    LS1.com Sponsor
    GM Tuner

    Quote Originally Posted by VENOMOUS View Post
    From what I understand Yes. But after looking at a freeze frame I do show stft and ltft form 3&4 which I thought were post cat O2s?

    There is no 3&4. There is B1S1, B1S2, B2S1, and B2S2. The rear O2s (both S2's) have no effect on fueling.



    Quote Originally Posted by mrr23 View Post
    a flashing SES light means there is a misfire. plug, wire, coil.
    Agreed.


    If it smells rich and you are losing MPG, the misfire is real. The fresh (unburned) air from the misfiring cylinder appears as a lean condition to your narrowband O2's which causes the car to [incorrectly] compensate by pouring in a ton of extra fuel in an attempt to 'make up' for a lean spot that isn't a lean spot at all...

  10. #10
    Senior Member mrr23's Avatar
    Join Date
    Jul 2005
    Location
    orlando, fl
    Posts
    7,134

    dark bowling green
    2000 corvette

    i think he meant the 3 & 4 being the % for the stft and ltft. so, it's adding fuel. being +/-4 is really good.

  11. #11
    $ 25,000 panty dropper VENOMOUS's Avatar
    Join Date
    Jan 2008
    Location
    Waco
    Posts
    1,186

    2005 Ram SRT-10 QC 8.3l
    1999 FRC Black

    Quote Originally Posted by mrr23 View Post
    i think he meant the 3 & 4 being the % for the stft and ltft. so, it's adding fuel. being +/-4 is really good.
    On the scanner I looked at the fuel trims and it showed stft and ltft for 1-4 and stft 3,ltft 3, stft4 and ltft 4 were in the + 50's and 60's?

  12. #12
    TunedbyFrost.com Tuner Frost's Avatar
    Join Date
    Jul 2007
    Location
    Richmond VA
    Posts
    2,415

    LS1.com Sponsor
    GM Tuner

    +50-60 is maxed out; thats a hard and steady misfire.

  13. #13
    $ 25,000 panty dropper VENOMOUS's Avatar
    Join Date
    Jan 2008
    Location
    Waco
    Posts
    1,186

    2005 Ram SRT-10 QC 8.3l
    1999 FRC Black

    Quote Originally Posted by Frost View Post
    +50-60 is maxed out; thats a hard and steady misfire.
    Injectors or wires left. I've changed everything else. MSD wires are about 30K old but looked over them and saw no flaws. Ohmed 4 and got 22-23 ohms? I'm starting to think injector. I swapped complete coil pack bracket off of known good car and no change? ANy ideas?

  14. #14
    TunedbyFrost.com Tuner Frost's Avatar
    Join Date
    Jul 2007
    Location
    Richmond VA
    Posts
    2,415

    LS1.com Sponsor
    GM Tuner

    pull the plugs, one or more WILL BE WET. Those MSD wires have no positive locking *snap* so sometimes it's hard to tell if they are fully seated.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. SES Light Flashing???
    By SunsetZ in forum General Help
    Replies: 19
    Last Post: 05-11-2009, 10:26 PM
  2. Help: SES Light flashing
    By SS/CETA in forum General Help
    Replies: 29
    Last Post: 10-25-2008, 03:33 PM
  3. SES light, flashing?
    By 666ws6 in forum General Help
    Replies: 22
    Last Post: 08-11-2008, 06:03 PM
  4. No flashing light on the H/U
    By Danger731 in forum Stereo and Electronics
    Replies: 1
    Last Post: 05-04-2008, 06:35 AM
  5. Please help!! SES light flashing!
    By BITCHIN96Z in forum LT1
    Replies: 2
    Last Post: 03-02-2006, 10:15 AM

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
  •