Engine shutting off?
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Cadillac Catera and Cimarron Forum Discussion, Engine shutting off? in Past Cadillac Vehicle Discussion; So I was driving to work today, and suddenly the engine cuts out and that light with an exclamation point ...
  1. #1
    IvoryWhiteCatera's Avatar
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    Engine shutting off?

    So I was driving to work today, and suddenly the engine cuts out and that light with an exclamation point inside a gear comes on. What the heck could that be? It doesn't wanna crank when I try to start it, but a few hours later it starts up just fine only to shut off again 15 minutes down the road. I'm typing this on the side of the road as we speak. Please help!

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    waco-brian's Avatar
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    Well it went into limp mode. Thats what that light means. Need to get a code reader on it even though there is no engine light on.

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    retho78 is offline Cadillac Owners Enthusiast
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    Re: Engine shutting off?

    Probably it's the CPS acting up. I had the same problem last year, was at the stop light and the car just turned off and it would not start and didn't get any warning lights. I waited about 30 minutes then tried again and it started and shut down after 5 mins then waited again for another 30 minutes and fired back up made it my house. I replaced the CPS and no issues now.


    Thanks.

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    Re: Engine shutting off?

    Quote Originally Posted by retho78 View Post
    Probably it's the CPS acting up. I had the same problem last year, was at the stop light and the car just turned off and it would not start and didn't get any warning lights. I waited about 30 minutes then tried again and it started and shut down after 5 mins then waited again for another 30 minutes and fired back up made it my house. I replaced the CPS and no issues now.


    Thanks.
    The CPS is only 2 years old. Do they go bad that often? I noticed a little play with the crankshaft pukkey.

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    Pukky? What is that?

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    Pulley.

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    Re: Engine shutting off?

    Update:

    So today I checked out the CPS, cleaned it and found that it still magnetizes pretty well. I drove it around my neighborhood for 15 minutes before it died again. I need this fixed before I sell it because i'm really tempted to junk it.

    Thanks

  9. #8
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    Re: Engine shutting off?

    The problem isn't with the sensor itself but its wire. Heat from the exhaust manifold cooks the conductor and it cracks. After a cooling period the crack closes and the engine will fire then the cycle repeats. When you replace the CPS add more heat insulation. A longer length of shielding, a loose sheath of aluminum foil works well.

  10. #9
    IvoryWhiteCatera's Avatar
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    Re: Engine shutting off?

    Quote Originally Posted by elvin315 View Post
    The problem isn't with the sensor itself but its wire. Heat from the exhaust manifold cooks the conductor and it cracks. After a cooling period the crack closes and the engine will fire then the cycle repeats. When you replace the CPS add more heat insulation. A longer length of shielding, a loose sheath of aluminum foil works well.
    Thank you so much. This is the most useful piece of advice on the subject. When I opened the hood I did notice that the wire rests on the valve covers which, in my case, are metal. So should I buy a new sensor? I'll try that aluminum foil trick first.

    Again, thanks.

  11. #10
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    Re: Engine shutting off?

    So I wrapped the wire with foil and nothing. Car still shuts down in exactly 15 minutes. Is there any other sensor that could be causing this? If not i'm going to order the crank position sensor.

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    MoistCabbage's Avatar
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    Foil will only protect from heat, it will not repair anything that is already damaged.

    Have you pulled your codes yet?

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    retho78 is offline Cadillac Owners Enthusiast
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    Re: Engine shutting off?

    get new sensor and then wrap with aluminium foil gives the CPS wire extra shielding from the heat.

  14. #13
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    Or pull codes instead of throwing parts at it.

  15. #14
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    Re: Engine shutting off?

    Quote Originally Posted by MoistCabbage View Post
    Or pull codes instead of throwing parts at it.
    I have 8. All for the heater circuit.

    ----------

    Quote Originally Posted by IvoryWhiteCatera View Post
    I have 8. All for the heater circuit.
    But the first time it died that light with a gear and exclamation point lit up.

  16. #15
    MoistCabbage's Avatar
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    What about history codes?

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