04 CTS-V with codes!!!!!!!!!!!! - Page 3
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2004-2007 Cadillac CTS-V General Discussion Discussion, 04 CTS-V with codes!!!!!!!!!!!! in Cadillac CTS-V Series Forum - 2004 - 2007; See attached. The P0352 points to an ignition-related fault on cylinder number 2 - faulty wiring, faulty ignition coil, or ...
  1. #31
    darkman's Avatar
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    Re: 04 CTS-V with codes!!!!!!!!!!!!

    See attached.

    The P0352 points to an ignition-related fault on cylinder number 2 - faulty wiring, faulty ignition coil, or a fault in the PCM. After rechecking the wiring and the spark plug, I would try moving the No. 2 coil to another location to see if the misfire follows that coil - if it does the coil is the problem.

  2. #32
    av8erdunn is offline Cadillac Owners Member
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    Re: 04 CTS-V with codes!!!!!!!!!!!!

    Quote Originally Posted by darkman View Post
    See attached.

    The P0352 points to an ignition-related fault on cylinder number 2 - faulty wiring, faulty ignition coil, or a fault in the PCM. After rechecking the wiring and the spark plug, I would try moving the No. 2 coil to another location to see if the misfire follows that coil - if it does the coil is the problem.
    It turns out it was a bad plug. I changed it and she runs fine now. That being said, the engine has a slight tick sounding like it comes from the cam when a stethoscope is used. Could the lifter have been damaged while the spring was broken and allowing the lifter to float? Wondering if I ought to go ahead and replace the lifters also.

  3. #33
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    Re: 04 CTS-V with codes!!!!!!!!!!!!

    Is this a high mileage motor?

  4. #34
    av8erdunn is offline Cadillac Owners Member
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    Re: 04 CTS-V with codes!!!!!!!!!!!!

    Its got 119k.

  5. #35
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    Re: 04 CTS-V with codes!!!!!!!!!!!!

    I doubt that the valve spring event damaged the lifter because you report no damage to the top of the piston. These motors make noises that are particularly noticeable with the engine cover off. It is possible though that the lifter is damaged, or perhaps rotated such that the roller did not stay parallel with cam lobe. If there is damage of that kind there will usually be metal in the oil.

    With 119k miles on the motor, if you want to make sure the motor is reliable you should consider pulling the heads and letting a machine shop do a valve job, with all new springs (assuming you have not done that already). Assuming the cam is undamaged, you could throw in a fresh set of LS7 lifters (GMs standard replacement for these motors now) and put it back together. The bottom end on these motors can last up to 250k miles and beyond.

  6. #36
    av8erdunn is offline Cadillac Owners Member
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    Re: 04 CTS-V with codes!!!!!!!!!!!!

    Quote Originally Posted by darkman View Post
    I doubt that the valve spring event damaged the lifter because you report no damage to the top of the piston. These motors make noises that are particularly noticeable with the engine cover off. It is possible though that the lifter is damaged, or perhaps rotated such that the roller did not stay parallel with cam lobe. If there is damage of that kind there will usually be metal in the oil.

    With 119k miles on the motor, if you want to make sure the motor is reliable you should consider pulling the heads and letting a machine shop do a valve job, with all new springs (assuming you have not done that already). Assuming the cam is undamaged, you could throw in a fresh set of LS7 lifters (GMs standard replacement for these motors now) and put it back together. The bottom end on these motors can last up to 250k miles and beyond.
    I already replaced all of the springs so that's one less thing they would have to do. Once I pull the heads will that give me a good view of the cam to see if its OK? I will change the oil tomorrow to see if there is any metal in the oil. Thank you for all of your help, I really appreciate it.

  7. #37
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    Re: 04 CTS-V with codes!!!!!!!!!!!!

    Quote Originally Posted by av8erdunn View Post
    I already replaced all of the springs so that's one less thing they would have to do. Once I pull the heads will that give me a good view of the cam to see if its OK? I will change the oil tomorrow to see if there is any metal in the oil. Thank you for all of your help, I really appreciate it.
    With the headers off, you will be able to pull out the plastic lifter trays and see the cam. The condition of the lifter rollers will also tell you whether lobe damage has occurred.

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    Re: 04 CTS-V with codes!!!!!!!!!!!!

    And the saga continues......... today on the way to work I threw another code. PO113 IAT sensor 1 circuit. It also seems to have a slight miss while idling. Nothing too bad just a slight miss. Which is circuit 1? I am going to eventually get this thing code free.........at least I hope I do!!!!!!!

  9. #39
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    Re: 04 CTS-V with codes!!!!!!!!!!!!

    This code basically indicates bad/loose wiring to the Intake Air Temperature (IAT) sensor; bad grounding of the IAT; a defective IAT; or a defective PCM.

    See attached.

  10. #40
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    Re: 04 CTS-V with codes!!!!!!!!!!!!

    Pin was bent in the maf. Fingers are crossed that I will be code free in the morning. Thanks for the help.

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