High Mileage issue?
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2009-2014 Cadillac CTS-V General Discussion Discussion, High Mileage issue? in Cadillac CTS-V Series Forum - 2009-2014; Hello, I have an 09 V with 160K miles on it. The car has been excellent for those miles, but ...
  1. #1
    tbisme is offline Cadillac Owners Member
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    High Mileage issue?

    Hello,
    I have an 09 V with 160K miles on it. The car has been excellent for those miles, but in the past several months, I've had an issue arise with the car and was wondering if you had any suggestions.
    Under normal acceleration, the car behaves normally and if I accelerate in any gear up to the redline, using manual shifting, with minimal throttle, it will rev to the redline with no issue.
    The problem occurs when I go WOT and then right about the time the car would be upshifting, it suddenly makes a horrible sound, like its taking a deep breath, and the car feels like the traction control has kicked in. It will decelerate like it lost all power, and then after the car shifts, and the rpms drop down, it starts accelerating hard until the next shift approaches.
    I've taken it to my local mechanic, who I have much faith in, and he said that he's not sure what's going on. His best guess would be the injectors, but he doesn't want to go through that until he could verify it. He checked the fuel pressure and said that it stays where it's supposed to while the car is moving down the road.
    Any suggestions?
    Thank You

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  3. #2
    DCV
    DCV is offline Cadillac Owners Enthusiast
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    Re: High Mileage issue?

    Did you ever have the throttle body and intake cleaned along with the injectors? Maybe get the fuel filter changed? New air filter....I think you need to tell us what services you had done.

  4. #3
    tbisme is offline Cadillac Owners Member
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    Re: High Mileage issue?

    No, I haven't had the throttle body, intake or injectors cleaned. I thought this model didn't have a fuel filter. Air filter is changed every 50K miles and every required service has been performed on the vehicle.

  5. #4
    cruiser68 is offline Cadillac Owners Enthusiast
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    Re: High Mileage issue?

    If your trans is starting to slip, you are probably hitting redline and you will hear a funny sound when that happens with no power.

  6. #5
    tbisme is offline Cadillac Owners Member
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    Re: High Mileage issue?

    My mechanic is a transmission specialist and he assures me that it's not the transmission. I've been in vehicles when the trans starts to slip and this is nothing like that. It's a violent let off of the acceleration, then reapplication of power. It's almost like I'm hitting the rev limiter when the power goes.

  7. #6
    DCV
    DCV is offline Cadillac Owners Enthusiast
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    Re: High Mileage issue?

    I had my V serviced and had the BG cleaning done to the TB, injectors, and intake. Definitely made it run better. Deposits build up. Every car has a fuel filter and you would be amazed at the junk that comes out of them after 50k miles. I suggest at a minimum get that replaced.

  8. #7
    Trapspeed's Avatar
    Trapspeed is offline Cadillac Owners Connoisseur
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    160K miles! Damn! That's awesome. Gives me great faith in these cars. As for your problem, I'm pointing at the rev limiter kicking in. That's exactly what my car did before the new tires.

  9. #8
    vfaninva's Avatar
    vfaninva is offline Cadillac Owners Connoisseur
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    Quote Originally Posted by tbisme View Post
    I have an 09 V with 160K miles on it.
    160,000 miles with only routine maintenance. Still running wot. Conratulations, we should all be so fortunate!

  10. #9
    SilverrV is offline Cadillac Owners Member
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    Re: High Mileage issue?

    i think this is a record.

  11. #10
    PNBLWZD is offline Cadillac Owners Fanatic
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    Re: High Mileage issue?

    Sounds like you are possibly hitting the rev limitter, which will cut the ignition at whatever the top RPM is set at in a factory tune until the RPMs come down a bit. Oh and congrats on 160k miles, that's amazing!

  12. #11
    neuronbob's Avatar
    neuronbob is offline Cadillac Owners Connoisseur
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    Re: High Mileage issue?

    Congrats on 160k miles. That is incredible!

  13. #12
    DiamondWhtV is offline Cadillac Owners Fanatic
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    Re: High Mileage issue?

    Sounds like a dirty air flow sensor. - Don't use any brake cleaner to clean with or any other chemicals. Always use the spray cleaner designed for the air flow sensor. And congrats on the 160k too.

  14. #13
    tbisme is offline Cadillac Owners Member
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    Re: High Mileage issue?

    thanks for all the input. The first thing my mechanic told me was that he cleaned the air flow sensor, because that is what he suspected, but it made no difference.
    I'm going to look into having the internal cleaning performed and see where that leaves me.

  15. #14
    bnagel is offline Cadillac Owners Fanatic
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    Re: High Mileage issue?

    Any update? BTW congrats on the 160K mark!

  16. #15
    1997BlackETC's Avatar
    1997BlackETC is offline Cadillac Owners Connoisseur
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    Re: High Mileage issue?

    Take a scanner to it!!! Any codes stored? Check engine light? But ya, definately do a fuel system cleaning and change the fuel filter, can't hurt even if it does not correct the issue all those must be dirty after those kind of miles. Have you changed the spark plugs? Maybe you have a bad coil? Have em put it on analayzer to check these things. Check the signal off the 02 sensor in the exhaust too, maybe a bad O2 sensor, this is what the computer feedback of the fuel mixure going out the exhaust end. A compression check could not hurt either just to see where your at with that, are you burning any oil?

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