Question about 1999 Daewoo Nubira

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1999 daewoo nubira (RPM)

Hey...i have a daewoo nubira 1999 model...i need to know how to fix a problem with my rpm's. When i am idleing at a set of lights my car revs at 2 and half revs per minute on the taco. It keeps getting worse....does anyone know how to solve this problem.....thanks :)

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Based on your description, could be anything:

  • throttle control (including A/C compensator);
  • auto choke;
  • engine management;
  • auto cruise (if your model has one)
A couple of clarifying questions:
  1. What is your standard set idling RPM, 1000? with or without A/C?
  2. Automatic or conventional/manual trnasmission?
  3. When was the last major tune-up? What parts were replaced?
  4. Does it sound like misfiring also?
  5. Any other indicators, hard starting, long warmup, stalling, excessive gas consumption, smarting to the eyes exhaust fumes?
  6. Does your battery light lits up?
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Posted on Jul 27, 2008

  • Louie  Role
    Louie Role Jul 28, 2008

    Hi again,

    Appreciate the "Ask Me". With your indulgence, I would repost this on your problem here.

    Offhand, I am tempted to think that there is nothing wrong with the car except that the on board computer is learning "new driver's habit". Might you want to try and reset the computer, simply remove the negative terminal of the battery for a couple of minutes. A warning though, some car stereos have built-in security protection and would ask for a code when the battery is removed. Pls have this code ready as well as the means of inputting them back in.

    If this does not prove to be corrective, then the correct procedure for diagnosis would be to have your car's computer scanned and the error codes interpreted. The error codes would reveal the "probable" cause of your problem(s). Often, the codes would point to a sensor that is either acting up or is falsely triggered. Thereafter check/corrective action/replacement of the pinpointed fault should resolve your issue. This would be more to your advantage rather than trying out several possibilities.

    If for some reason you want an immediate try, foremost to check would be the stepper motor (throttle control ). You could also try spraying the throttle assy/housing with a carb/injector cleaner.

    Hope this be of additional help/idea. Pls post back how things turned up or should you need additional information.

    Good luck and kind regards.

    Thank you for using FixYa.



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with my best wishes

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