Question about Daewoo Nubira

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Daewoo Nubira hunts on idle revs high in between gear changes

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I have a Daewoo nubira estate 2001. When starting the engine it hunts from about 1000 up to 2500 up and down. I have had the air control valve changed twice, the first time it fixed the problem, but the second time it had no effect. Is there any other item that can give this effect and how do I correct it Thanks.

Posted on May 09, 2010

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Your idle air control valve is not right.Check EGR valve,could be stuck open

Posted on Jan 01, 2010

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1 Answer

How to fix high aidla speed on Daewoo nubira 1998?


High idle speed on any fuel injected car engine ussually means an intake air leak or faulty idle speed motor, but maybe faulty coolant temp switch, check if coolant level in radiator is to top of neck ONLY OPEN RADITOR WHEN ENGINE IS COLD, this is for personal safety. Get a trigger spray bottle of water and spray around all parts of the inlet manifold if leak evident rgine should run slightly rough. other poss prob could be brake booster faulty or booster one way faulty or hose split. Good luck.

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1999 daewoo nubira (RPM)


Hi,

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.

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