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SES Light flashing

This is a discussion on SES Light flashing within the General Help forums, part of the LSx Technical Help Section category; Yesterday, I noticed that my car was running really strange. It started up just fine, but after my drive to ...

  1. #1
    R/A T/A SS/CETA's Avatar
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    SES Light flashing

    Yesterday, I noticed that my car was running really strange. It started up just fine, but after my drive to town for work it began running really choppy. The car's stock by motor standards, and no kind of motor work has been done to it in the recent past. It has 30k miles on it and about fifteen minutes ago it began running really bad.

    I started the car up, and within five minutes of being on it was at a running temp of 160. It normally takes about ten minutes for the motor to completely warm up. The SES light was going on and then off, but then it began blinking in threes.

    Then it ran extremely rough, and surging between 300-900rpm's. The light flashed faster and I was experiencing heavy exhaust fumes, which the car rarely does. The fumes smelled strongly of gasoline, so I turned the engine off.

    Any ideas as to what may be happening to my car?

    UPDATE 9/16/08*

    The car is throwing these:

    P0200 - Injector Circuit Open
    P0200"pd" - Injector Circuit Open
    P0308"pd" - Cylinder 8 Misfire Detected


    10-9-08 - RECEIVED NEW CODE

    PO155 - 02 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)


    I'm seriously at a loss here, and I'm not able to tow it to a dealership due to the loss of my job.
    Last edited by SS/CETA; 10-09-2008 at 03:04 PM.

  2. #2
    Life in the Fast lane sunsetorangess's Avatar
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    Sounds like a random misfire. Can you pull the code and post it up? Check your wires to ensure they are tight and not melted, could also be a fouled plug, your best bet is to pull the code(s) and post them up.
    J
    2001 SS, Its not the car its the Driver that matters....

  3. #3
    Speak the truth jad628's Avatar
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    I can't tell you for certain what the problem is, but I would recommend you unhook the battery for a while (an hour or so), and then hook it back up. Let the computer re-think, sometimes that's all it takes.

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    caraholic ggino85's Avatar
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    blue green chameleon
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    im clueless but i would try and find someone with a scanner so you can see what codes the engine is throwing. i wouldnt drive it till you do, you wouldnt wanna cause any permanent damage. if you do get a scanner but it doesnt define the code just post the code i have a thing to define them. good luck

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    caraholic ggino85's Avatar
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    blue green chameleon
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    Quote Originally Posted by sunsetorangess View Post
    Sounds like a random misfire. Can you pull the code and post it up? Check your wires to ensure they are tight and not melted, could also be a fouled plug, your best bet is to pull the code(s) and post them up.
    J
    beat me to it now that i think of it i bet your right sunset, when i did a plug and wire change i forgot to hook up one of the wires to the coilpack and my car ran exactly the way he's describing.

  6. #6
    R/A T/A SS/CETA's Avatar
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    I've got a few buddies with diagnostics tools, so as soon as I find one of them to run it on the car, I'll let you know.

  7. #7
    R/A T/A SS/CETA's Avatar
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    UPDATE*

    "P0200: Injector Circuit Open"

    There's the code it threw. So I'm guessing I have a stuck fuel injector, hence why the exhaust is healthy with the stench of gasoline?

  8. #8
    R/A T/A SS/CETA's Avatar
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    I honestly need help with this. It's my daily driver and I'm completely clueless to the LS1 engines. ANY help would be greatly appreciated.

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    Member Goldcuffs's Avatar
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    Go to #2 injector which is the very front on the passenger side and make sure it is plugged in. Take a look at the wires to it and make sure no critters chewed the wires. If they are good try GENTLY tapping on the injector(while it's running) with something like the butt of a screw driver or an extension and see if the problem goes away.

  10. #10
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    Edited at top with the thrown codes I'm receiving.

  11. #11
    Member Goldcuffs's Avatar
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    Woops, I thought it was a po202. Anyway, it sounds like an injector problem but it could be a wiring problem (to the injector) also. I guess what I would do is try to pulse the injector (with the car off). With out any diagnostic equipment I guess you will have to use jumper wires to power and ground and see if you can hear a "click" Or take it to a mechanic so you don't set it on fire.

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    R/A T/A SS/CETA's Avatar
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    Updated @ top with a new OBDII code found today, 10-9-08.

  13. #13
    old timer blue02Z's Avatar
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    well as for the Ho2s code that you got 2day that is traditionally a bad o2 sensor. just replace it. did you ever get the other driveability problems fingered out?

  14. #14
    TunedbyFrost.com Tuner Frost's Avatar
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    what troubleshooting have you done, you haven't said...

    your injector has failed, or the wiring to it is broken somewhere along the way.

  15. #15
    old timer blue02Z's Avatar
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    ^^^ yeah i forgot an open on your injector circuit doesnt mean the injector is stuck open, it means the circuitry is open/broken

  16. #16
    R/A T/A SS/CETA's Avatar
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    That's what I needed to know. My daily is an LT1, and unfortunately for me I've not studied the LS1 as much as I should have. I've tried erasing the codes and unplugging the battery, to which neither work.

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    Member Justin93's Avatar
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    Time to replace the front injector!!!!!!!

  18. #18
    old timer blue02Z's Avatar
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    yeah most likely there is an open in the #2 injector wireing or in the wires to that particular injecector. also could be that it became unplugged

  19. #19
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    So, injector #2 causes cylinder number 8 to misfire?

  20. #20
    old timer blue02Z's Avatar
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    o shit lol no. i didnt even bother to check your OP. i was going Justin93 said, i losing it lol. you're right cylinder 8 if it was a p0308

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