Results 1 to 15 of 40

Thread: HELP CHEVY CAPRICE L99 TROUBLE CODES

Hybrid View

Previous Post Previous Post   Next Post Next Post
  1. #1
    Fuel Injected! mastermind's Avatar
    Join Date
    Nov 2019
    Posts
    22

    Exclamation HELP CHEVY CAPRICE L99 TROUBLE CODES

    Greetings forum, I not long registered and poorly understand on-English. Today I decided to diagnose my car- chevy caprice 94 l99 through the eehack program and got 3 errors in the main body:
    ECM TROUBLE CODES:
    MALF43A (MALF 43A ACTIVE)
    ERR43 (ESC FAILURE)
    ERR95 (OIL LIFE LAMP CIRCUIT FAULT)
    further I saw in diag that there is no information on 47 components and was in of shock !(see photo).I also want to say that there is no EGR, it is completely removed, 2 fans work and the check is lit. Guys write, I want to cut the EGR out of the brain machine, just don't know how, please help me!
    2ac68b324134.jpgda16d0fffcc6.png

  2. #2
    Fuel Injected!
    Join Date
    Jul 2019
    Location
    Orange, CA
    Posts
    757
    The “No Data” in the Diag tab is because you have not enabled the tab. While connected, click either the “Stream” or “Snapshot” buttons on the right side of the screen to request the data for that screen. Since these are just error codes, “Snapshot” should work just fine.

    ESC Failure is likely because the resistor in one or both of your knock sensors has failed. You can either create a BIN for your vehicle that disables this error code using TunerPro, or you can replace the knock sensors. 99% of the time this error does not actually mean the knock sensor has failed, but just that the detection circuit has failed. It is up to you how you want to solve it.

    Oil Life Lamp Circuit Fault is easy, Check to make sure the bulb is not blown for the “CHANGE OIL” light.

    Good luck.

  3. #3
    Fuel Injected! Terminal_Crazy's Avatar
    Join Date
    Oct 2015
    Location
    Lancashire England
    Posts
    412
    Hiya
    I've had the ERR43 & MALF43A codes on my '95 Z28 occur when the headers melted the knock sensor cables.
    Very intermittant and hard to diagnose as cables all test OK.

    HTH
    Mitch
    '95 Z28 M6 -Just the odd mod.
    '80 350 A3 C3 Corvette - recent addition.

  4. #4
    Fuel Injected! mastermind's Avatar
    Join Date
    Nov 2019
    Posts
    22
    Do you mean that you had normal knock sensors, wiring problems?
    *
    Who can write how to remove egr or these sensors, who has stable firmware for l99 94!

  5. #5
    LT1 specialist steveo's Avatar
    Join Date
    Aug 2013
    Posts
    4,031
    Quote Originally Posted by mastermind View Post
    Do you mean that you had normal knock sensors, wiring problems?
    *
    Who can write how to remove egr or these sensors, who has stable firmware for l99 94!
    what language do you speak? maybe someone here can help translate for you

    we call firmware 'bin'

    you have stable firmware already. flash -> download bin from ECM

    if you want to remove EGR or knock sensors use tunerpro. use eex definition from my site.

    http://fbodytech.com/eex-tunerpro-definition/

  6. #6
    Fuel Injected! Terminal_Crazy's Avatar
    Join Date
    Oct 2015
    Location
    Lancashire England
    Posts
    412
    Do you mean that you had normal knock sensors, wiring problems?
    Sensors were new. cables tested ok. Knock circuit tested ok many times.
    The cables were occasionally rubbing on the frame causing a short.

    HTH
    Mitch
    '95 Z28 M6 -Just the odd mod.
    '80 350 A3 C3 Corvette - recent addition.

  7. #7
    Fuel Injected! mastermind's Avatar
    Join Date
    Nov 2019
    Posts
    22
    Guys, and anyone has a good and qualitative firmware on l99 caprice?

  8. #8
    Fuel Injected!
    Join Date
    Jul 2019
    Location
    Orange, CA
    Posts
    757
    We keep trying to tell you that you already have it. Download the BIN from your L99 Caprice, then modify it yourself using the free program TunerPro.

    Or upload the BIN file here and I can make the changes for you to disable the errors.

  9. #9
    Fuel Injected! mastermind's Avatar
    Join Date
    Nov 2019
    Posts
    22
    The weird thing is the car goes in full yourself

  10. #10
    Fuel Injected! mastermind's Avatar
    Join Date
    Nov 2019
    Posts
    22
    Guys, no one knows how to remove errors on air bag ? There was an accident, the airbags and sensors were changed, but now the air bag is on fire.

  11. #11
    Fuel Injected!
    Join Date
    Mar 2013
    Posts
    1,475
    Change the airbag module. If the airbags were deployed the error is hard coded and can`t be cleared.

  12. #12
    Fuel Injected! mastermind's Avatar
    Join Date
    Nov 2019
    Posts
    22
    Well, I have a module from 93 years, how do you think it will fit?

Similar Threads

  1. 1994 Caprice 5.7 LT1 Code 44
    By babywag in forum GM EFI Systems
    Replies: 7
    Last Post: 10-28-2016, 07:39 PM
  2. 86 Caprice Landau TPI Project
    By TPI 86 Caprice Landau in forum GM EFI Systems
    Replies: 6
    Last Post: 01-06-2015, 10:37 AM
  3. 1994 Caprice Baby LT1 V8 4.3 L
    By ddeveloper in forum Introductions
    Replies: 1
    Last Post: 07-28-2012, 04:50 AM
  4. 1995 CES trouble, error codes SES Check Engine Light.
    By EagleMark in forum GM EFI Systems
    Replies: 0
    Last Post: 10-07-2011, 02:46 AM
  5. 1994 Caprice LT1
    By EagleMark in forum GM EFI Systems
    Replies: 12
    Last Post: 08-27-2011, 05:27 AM

Tags for this Thread

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
  •