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Daewoo Lanos 2001 . Rpm drop when try to accelerate when push on gas pedal. Also rough engine running when try accelerate and push on gas pedal

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Inline or in tank fuel filter (replace).. fuel pump or injector worn out..
need tuneup (plugs) rough engine.. not firing on all cylindars.
exhaust clogged up can do same thing.. go have catalytic converter checked (they drill tiny hole and pressure test it) .. if bad replace.. replace muffler if need.. a bad converter will not allow whole system to breath and you lose power and get same exact symptoms. you can hook it up to a diagnostic machine at autozones for free.. they plug a computer into your car under dash and it runs all the CODES for things not running right.. codes stored in your cars computer for future repair needs.. when car runs bad like it is for you.. it generates codes for things to CHECK and look for to maybe replace. You will get all the things plus a few little sensors that are cheap and easy to replace too.. start with autozone and computer codes.. they will go in store and print little papers for you..then start on cheapest suggestions.. little sensors and slap some plugs into it.. you tube how to if you dont know and find step by step videos for your make model car.. you will have to go to a shop to get a new converter welded on and it is a little high priced.. but you HAVE to have it.. if its broken.. you have to replace it. Dont let people tell you to cut it out and just put straight pipe as it will affect other things running adversly and cause you more problems.. the cars are set up to run WITH them on. I have had this problem and it was my converter.. but it needed new plugs and I gave it a sensor by the fuel injector.. it runs excellent now.. good luck! I dont know where you are.. but if there is a garage that can run the codes for you ... thats where to start.

Posted on Jul 31, 2013


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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

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SOURCE: !999 Daewoo Lanos


It verifies well the year, it is of one of 1999

I hope that it should serve you

Posted on Oct 21, 2008

  • 443 Answers

SOURCE: rough idle, backfire on acceleration

check everything you can under the hood your air intake system all of it especially make sure all clamps are tight .. and make sure all vacuum hoses are good and not cracking or broken or just loose . you might run a little fuel cleaner through a tank of gas too cleaning the engine fuel system up some. just a few ideas.. Jerry

Posted on Apr 12, 2009

  • 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:

Good Luck

Posted on Aug 07, 2009

  • 25 Answers

SOURCE: 2001 Ford F650 with 7.2 Cat deisel acceleration problem

Check your TPS Throttle positioning sensor. Sounds like it has a dead spot in it or it is failing. May also be a wiring harness issue or loose connection at TPS too! If its intermittent then it will soon go out completely. It should be located on your fuel pedal. Remove it and check it with an ohm meter. Check resistance all the way thru from 0-100 percent. When it is not working it should do nothing and show no resistance. When it is working the resistance value will increase and or decrease as you turn the sensor.

Posted on Feb 22, 2010

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1 Answer

Lanos 2001 rough running during acceleration at law rpm

double cam or single? any obd2 codes present? need more info, but check your top o2 sensor and the coils.
check fuel filter and clean tb body. I have a 98 lanos and is running perfect so I know what you may need

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2001 Daewoo lanos 1.6 16v sx,sometimes engine revs up till 1500 2000 rpm? ? help please!

You have a IAC (Idle air control valve) Its sticking your solution is to replace it

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Changing alternator on 2001 Daewoo Lanos

Probably not.
You may have to remove brackets or belts but I've yet to see one for which one couldn't find a 'work-around.'
No doubt that the engine/transmission assembly was dropped in as a unit, but their service people still have to deal with removals such as yours so considerations such as removing a specific part is normally part of their design process. Just imagine if this had to be done under warranty and Daewoo would have to pay the bill. 

Jan 25, 2009 | 2001 Daewoo Lanos

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Daewoo cielo 1997 spluttering @ startup

Try to reset the IAC valve on the throttle body it has 4 wires t it .
procedure is as follows

turn ignition key on (don't start the engine), unplug the IAC valve, turn the key off, replug the IAC .Do this 3-4 times .Then start the engine while holding the pedal down at about 2000 rpm then let the rpm down slowly till idle. Sometimes the throttle requires cleaning then redo the reset.

Jan 06, 2009 | 1999 Daewoo Lanos

1 Answer

Car running problem

Ok Slow deceleration rev responce was part of the ECU software to keep the emissions down ,however if this has only just started you can try to reset the IAC valve ,the procedure is as follows.

Turn ignition key on ,unplug the IAC valve ,turn the key off ,replug the IAC valve. do this 3-4 times .Then start the engine while holding the gas pedal to 2000 rpm ,then slowley let the go of the gas pedal till the engine idles .

The IAC valve is located on the throtle body and has 4 wires to it.

Sometimes the throtle body needs to be cleaned and then reset.

Jan 02, 2009 | 1999 Daewoo Lanos

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