check engine light (ON) 06 STS
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Cadillac STS Forum - 2005 through 2012 Discussion, check engine light (ON) 06 STS in Past Cadillac Vehicle Discussion; on my way back from work on the highway, the car misfired whenever i accelerated! after the second time, the ...
  1. #1
    Mullah88's Avatar
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    check engine light ON 06 STS (SOLVED)

    on my way back from work on the highway, the car misfired whenever i accelerated! after the second time, the check engine light came on, i drove straight to firestone and they ran a diagnostic check and this is what they found out:

    i need to replace these parts
    • ignition coil - parts: 139 labor: 323
    • plentum gasket - parts: 59 labor: 142
    • spark plug - 15 labor: 294
    • fuel filter - parts:44 labor: 76

    and a fuel system cleaning and an oil change.

    for those that use warranty direct, should i get it fix ASAP (pay out of pocket)? will they cover all of these or will they only cover one of the repairs? the warranty will kick in on the 2nd of next month...that'll make it the 30th day after i changed my filter and oil (i have 200miles to go to hit 1k after the oil change)...i can foot the bill but if they'll cover it, then ill just pay the 100 deductible and call it a day!

    EDIT:

    CRANKCASE FLUSH : 180.00 (problem solved)

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  3. #2
    curtc's Avatar
    curtc is offline OCD - Obsessive Cadillac Disorder
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    Re: check engine light (ON) 06 STS

    Warranty won't cover the spark plugs or the fuel filter, but should cover the ignition coil and plenum gasket I would think.
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  4. #3
    Mullah88's Avatar
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    Re: check engine light (ON) 06 STS

    am i risking driving the vehicle as is now, or should just park it until i can get it fixed? seeing as i need to put a couple more miles on it

  5. #4
    curtc's Avatar
    curtc is offline OCD - Obsessive Cadillac Disorder
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    Re: check engine light (ON) 06 STS

    If is is misfiring you could potentially do some damage if you keep driving it...You're dumping raw fuel into the exhaust during the misses, not so good on the catalyst system.
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  6. #5
    ddalder's Avatar
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    Re: check engine light (ON) 06 STS

    Which engine do you have? Which cylinder did they say is misfiring? Was your check engine light on solid, or was it flashing at any time?
    curtc and curtc like this.

  7. #6
    Mullah88's Avatar
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    Alright, ill update when I take it to my mech. Back to the Seville

  8. #7
    ddalder's Avatar
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    Re: check engine light (ON) 06 STS

    So as an example, the GM labour times to replace a plug in cylinder 1, 2 or 3 (if you have engine code 7 - V6) is 1.4 hours or if it's cylinder 4, 5 or 6 it's only 0.2 hours. With engine options A or D (V8 engines), the labour time is a straight 0.4 hours. None of these times include diagnosis and the times are to replace a single plug only. Of course you have to remove the coil to get the plug out so times include coil R & R. Book time for the fuel filter is 0.6 hours.

    Their labour charges are ridiculous. It seems they are charging full labour time as though they were completing each task from start to finish individually. Which Firestone location is it so I can tell my friends never to go there?

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    Mullah88's Avatar
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    Lol Its in charlotte...off independence blvd. First it was goodyear that didnt catch the check engine light (when I did the oil change) even tho I asked specifically to run an engine diagnostics...now firestone is trying to rape my wallets ( $1,354 parts n labor).

  10. #9
    ddalder's Avatar
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    Re: check engine light (ON) 06 STS

    I can fly down from Canada to do that work and probably make a few bucks after all is said and done for that price LOL

  11. #10
    EChas3's Avatar
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    Re: check engine light (ON) 06 STS

    ^^^ It certainly does sound high. If the light isn't flashing you have time to take it to a Cadillac service department. Don't believe all shops are the same. These cars ARE different.

  12. #11
    Mullah88's Avatar
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    Re: check engine light (ON) 06 STS

    Quote Originally Posted by ddalder View Post
    Which engine do you have? Which cylinder did they say is misfiring? Was your check engine light on solid, or was it flashing at any time?
    I have the 3.6L V6 engine and the second cylinder misfires, the light blinked on and off before when I accelerated hard but this time around its a solid light

  13. #12
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    Re: check engine light (ON) 06 STS

    A flashing check engine light is a definite warning that damage is possible. If it's solid, drive gently and you should be able to get it to a shop without a problem. Since it's cylinder 2 there is more labour, but not anywhere close to what they've quoted. Good luck with everything and be sure to post the outcome.

  14. #13
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    Re: check engine light (ON) 06 STS

    sure will, ill have to drive the car on monday though since my seville's AC is out and the windows dont role down either. ill have to drive the STS to work then drop it off at my mech. to work on it....but yeah its a steady light not a flashing one phew

  15. #14
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    Re: check engine light (ON) 06 STS

    ok update: i left the car for my Mech. and all he did was flush the crankcase 3 times. after the first flush the check engine light went off but he held the car for 2 more days to be certain (he did it again for each day)...he said it should fix the problem but if the light comes back up again then he'll have to take the engine apart

  16. #15
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    Re: check engine light (ON) 06 STS

    'flush the crankcase' ??

    i'm not really familiar with that

    anytime anyone says the word 'flush' i get hyper skeptical

    the misfire is due to a coil issue and will not go away until that is dealt with
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