Fuel Cutoff For Z-rated Sts
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Northstar Engines and System Technical Discussion Discussion, Fuel Cutoff For Z-rated Sts in Cadillac Engine Technical Discussion; I own a Z-Rated 01 STS and I was under the impression that the fuel cut off was at least ...
  1. #1
    caddysornothin49 is offline Cadillac Owners Member
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    Fuel Cutoff For Z-rated Sts

    I own a Z-Rated 01 STS and I was under the impression that the fuel cut off was at least 140+. I was out the other the night driving home from a buddy's and decided to open her up a little. She smoothed her way rt up to 130 than just started jerking like it was stalling out. I'm assuming that would be the fuel cutoff yes? So whats up with this 130 cra#? I'm pretty sad about it

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    Highline Cady's Avatar
    Highline Cady is offline Cadillac Owners Fanatic
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    Re: Fuel Cutoff For Z-rated Sts

    No you'll get a chime, then the cluster will say fuel cutoff. Not sure what yours was doing but it doesn't sound like it was the fuel cutoff. It should be 150 or 155 can't remember. H rated tire cars were 130ish and S rated 110-112.

  4. #3
    caddysornothin49 is offline Cadillac Owners Member
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    Re: Fuel Cutoff For Z-rated Sts

    Ok well now I'm a little worried. It is clearly stated Z-Rated tires on the inside of the door. I didn't here a chime at 130 either. The car didn't shut of or anyting and I let off of the gas within say 2 sec. Car drove fine rest of the way home. No noises no smells and rough idle. Car doesn't even have 37000 miles yet. Any ideas whats up?

  5. #4
    AJxtcman's Avatar
    AJxtcman is offline Cadillac Owners Connoisseur
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    Re: Fuel Cutoff For Z-rated Sts

    PM me your VIN

  6. #5
    caddysornothin49 is offline Cadillac Owners Member
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    Re: Fuel Cutoff For Z-rated Sts

    Vin has been sent AJ

  7. #6
    AJxtcman's Avatar
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    Re: Fuel Cutoff For Z-rated Sts

    Qch - Tire All P235/55r17 Goodyear Eagle Ls H-rated, Blackwall

  8. #7
    Highline Cady's Avatar
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    Re: Fuel Cutoff For Z-rated Sts

    H rated, 130 mph cutoff. You said that there IS a Z tire sticker on the door? Somebody somewhere at sometime got sneaky!!! Bummer dude.

  9. #8
    Ur7x is offline Cadillac Owners Connoisseur
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    Re: Fuel Cutoff For Z-rated Sts

    Actually the "Z" sticker is a dead giveaway that something is wrong..
    Unlimited 2001 cars came with "W" rated tires.

    The "Z" sticker is a fraud.

  10. #9
    Highline Cady's Avatar
    Highline Cady is offline Cadillac Owners Fanatic
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    Re: Fuel Cutoff For Z-rated Sts

    What he said. Can't believe I over looked that.

  11. #10
    caddysornothin49 is offline Cadillac Owners Member
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    Re: Fuel Cutoff For Z-rated Sts

    Wait what???? I don't even know what is going on rt now but it doesn't sound good. I will double check the sticker and let you guys know. Hell I will see if I can't get a picture posted of it

  12. #11
    caddysornothin49 is offline Cadillac Owners Member
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    Re: Fuel Cutoff For Z-rated Sts

    Yeah the sticker says ZR after the tire size. So what this it a fraud and my full cut off really is at 130 or what? I'm pretty devastated to say the least.

  13. #12
    AJxtcman's Avatar
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    Re: Fuel Cutoff For Z-rated Sts

    Quote Originally Posted by caddysornothin49 View Post
    Yeah the sticker says ZR after the tire size. So what this it a fraud and my full cut off really is at 130 or what? I'm pretty devastated to say the least.
    Doors get replaced. Is the VIN the same on the door sticker as the one on the dash?

    Find the RPO list. I think it id the trunk on your car. I think it is on the underside of the spare tire cover. Then look for QCH. That is the RPO for a H rated tire.

    GM has your car leaving the factory with QCH

  14. #13
    caddysornothin49 is offline Cadillac Owners Member
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    Re: Fuel Cutoff For Z-rated Sts

    Wow, tha's pretty Fuc*** shady!!! Grrrrrr

  15. #14
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    CadillacSTS42005 is offline Banned
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    Re: Fuel Cutoff For Z-rated Sts

    hahaha
    your door was replaced and the vins dont match do they???
    always check your body panels before you buy so you dont get surprises like this later
    and you have no reason EVER to be pushing over 130 on the street

  16. #15
    caddysornothin49 is offline Cadillac Owners Member
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    Re: Fuel Cutoff For Z-rated Sts

    Well I guess I will just have to ask AJ if he ever gets some time to help me out with my little 130 issue. I know you shouldn't be going that fast, but its the feeling of knowing you can

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