Question about 1999 Daewoo Lanos

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Very high idle after the engine is warmed up

Hello, I have a problem with my `99 Daewoo Lanos and i`m desperate, i`ve tried everything. The engine is working fine, has lots of power at low coolant temperatures, and when the outdoor temperature is lower too. When the temp gets higher, idle starts rising(sometimes up to 3500RPM), it has almost no power after 3500-4000 RPM. It has moments when all goes well, or the idle oscillates between 800-1500. If anyone can help me, please do. I`ve tried just about anything and still won`t run the way it should. Regards!

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  • Daewoo Master
  • 40,820 Answers

Have a fault reading done to determine the sensors that have failed. Could be a MAF/MAP sensor problem or an ambient air temp sensor.

Posted on Apr 27, 2013

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

SOURCE: 2002 Daewoo Lanos Engine Type

Yes, this is an interference engine. I just finished fixing mine and it is a big expensive job. Sorry to give bad news.

Posted on Oct 04, 2008

  • 1 Answer

SOURCE: 2001 Daewoo Lanos coolant temp sensor

The coolant temp senson is on the EGR valve mounting adapter

Posted on Mar 09, 2009

stevenhurc
  • 450 Answers

SOURCE: 2000 Daewoo Lanos intermittently idles rough

check throttle body and pcv hoses and ports for blockage possible carbon build up and sticky iac valve

Posted on Jul 20, 2009

beduncan
  • 73 Answers

SOURCE: running rough

If your car is running rough and it's fuel injected (which yours is). Follow the air intake (black plastic box - housing the air filter that has tubing that goes to the motor) until it reaches the Throttle body (rounded metal air intake at the end of the plastic tube - has one large flap inside). You will want to remove the hose clamp and thoroughly clean the throttle body and the AIC (air idle control valve - small canister attached to the throttle body). Use off-the-shelf cleaner from any automotive store. This takes about 30mins to 1hr depending on your skill level. This will result in a cleaner smother idle and smoother performance. This is a common issue in today's cars. I have to do this once a yr to keep my modified car running happy.

Take a look at the later parts of this article for pictures to give you an idea:

http://forums.nicoclub.com/zerothread/319146

Good Luck

Posted on Aug 07, 2009

  • 6 Answers

SOURCE: Daewoo Lanos 1.4 1997 Idling really high - Idle Rev Valve?

hi there the problem describe is a common problem you need to take the car into your dawoo/chevrolet dealer as there was a reprogramme that need s to be downloaded to your ecu to fix the problem should only take about 30 mins so should not cost you to much i used to have around 10 to 15 a week to do

Posted on Dec 20, 2009

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I found a manual on CD for my Daughters 99 Daewoo Lanos on ebay motors cars/trucks... type in 99 daewoo lanos manual and it should bring up some.
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