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Thread: 2003 impala " base model " 3.4L Engine light blinking.

  1. #1
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    2003 impala " base model " 3.4L Engine light blinking.

    I also feel the engine shaking. I noticed this this morning.
    What can it be?

    Thanks for your replies.

    P.S. At this moment it has 22K miles on it.

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    If the CEL (check engine light) is blinking, DO NOT drive the car anywhere. Call for a tow truck, and have it serviced by a professional.

    If the CEL light comes on solid, that is OK, but if it flashes, driving the car is a bad idea.

    As for what is wrong, could be a fuel delivery issue, spark, or timing issue.
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    Did you check to make sure that your fuel cap is on tight enough. That happened to me once in my TSX. It was not getting enough pressure so that is why it was on. Try that first before you take it to get serviced.
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    a cause for the engine sharking is usually a piston misfireing, which is a tiiming issue. best bet is to get it diagnosed by a technition.

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    Yep sounds like a misfire to me. It could a number of things, bad spark plug, bad plug wire, bad coil pack. take it to the dealer since it's still under warranty, and it wont cost you a thing. And you dont need a tow truck, just drive it straight there.

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    Quote Originally Posted by buhdussy
    Yep sounds like a misfire to me. It could a number of things, bad spark plug, bad plug wire, bad coil pack. take it to the dealer since it's still under warranty, and it wont cost you a thing. And you dont need a tow truck, just drive it straight there.
    I was under the impression that the flashing CEL was different than just a solid CEL, and not to drive the car, to prevent causing any further damage to the engine and its components.

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    it might just have been flashing every single time that piston misfired.

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    Quote Originally Posted by Heavy Fluid
    I was under the impression that the flashing CEL was different than just a solid CEL, and not to drive the car, to prevent causing any further damage to the engine and its components.
    yes and no. it's not going to hurt anything to drive it to the dealer.

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    Quote Originally Posted by Devilz
    it might just have been flashing every single time that piston misfired.
    You are kidding, right?

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    Quote Originally Posted by Heavy Fluid
    You are kidding, right?
    lol yeah, atleast someone cought the joke

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    A flashing light means that there is a missfire occuring. In theory, if it is an ignition problem, you will dump a lot of raw fuel into the catalytic converter and damage it. That is why the say not to drive it. In the real world, I've seen people do far worse without doing any damage. The two most common problems I have seen on that engine are corroded coil towers and plugged fuel injectors. Are you machanically inclined enough to fix things yourself?

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    Quote Originally Posted by Buickman
    The two most common problems I have seen on that engine are corroded coil towers
    /me raises his hand

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    Quote Originally Posted by Buickman
    Are you machanically inclined enough to fix things yourself?
    Not really.

    I had actually called the dealer and they said it can be numerous things but what he " PERSONALLY " though it sounded like was, " BAD SPARKPLUGS ".

    I also noticed today that there is a weird sound coming out of the muffler, like if it has a small, small puncture thus making that weird sound. It never sounded like that before the flashing CEL.

    What's funny is that my car was fine when i parked it but when i took it our the parking spot 3 days later i noticed that sound.

    P.S. So, does it sound like something im still covered for? I don't want them to hit me with any labor fees.


    Thanks for the input guys, i will actually drive it in, the shaking is getting a little bit worst. Now the CEL lights becomes solid at times but then it resumes the blinking.
    Last edited by [IFC]Area51; 12-10-2005 at 01:36 AM.

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    It might still be under waranty (3 years/36000 mile). You are under on milage, but depending on whether it was an early or late late build of the 03 model year, you may be out on time. I'd check with a Chevy dealer ASAP. Or if you want to PM the last 8 characters of your VIN # (it will be "3XXXXXXX"), and I can check for you.

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    Quote Originally Posted by [IFC]Area51
    P.S. So, does it sound like something im still covered for? I don't want them to hit me with any labor fees.
    Labor fees are what kills you. If it is just the spark plugs, you can do that yourself. The dealership will easily charge you at least an hour of labor, which is $85 an hour I believe. Not quite worth it, in my opinion. If it is more than the plugs, you might have to suck it up and pay.

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