Question about 2000 Daewoo Lanos

2 Answers

Car running lumpy, reduced power

I have a 2000 daewoo lanos check engine light either stays on or flashes intermittently, i have been told by the gargae it is a fautly o2 sensor, had all coil packs replaced and new spark plugs. sometimes it runs ok and then all of a sudden it runs lumpy (sounds like a tank) and looses power, but isnt stalling when idleing. i have just disconnected the o2 sensor by the fans, is it the o2 sensor that needs to be replaced. the garage cant seem to help and iam at my wits end to know what else to try!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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  • bishpk29 Aug 28, 2008

    are there two o2 sensors? i found the one at the front near the cooling fans and disconected it but it made little difference.



  • Anonymous Sep 09, 2008

    I have a similar problem? I think? When stationery the engine noise is tremendous, and the RPM show at about 3,300 but drops dramatically when the gears are engaged. When I took it for it's MOT the garage managed to reduce the RPM (for a short while). However, it didn't last long and now I'm getting the engine symbol flashing (more on than off). HELP!

    I do not know what the solution can be - does anyone know where I can take it to be repaired (hopefully near Sutton, Surrey)!

  • murphyian99 Dec 23, 2008

    sounds similar to the problems i am having with mine have new plugs and leads have been told its coil have voltage coming from ecu to the coil but not leaving the coil to plugs two and 3 first i have heard of o2 sensor

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2 Answers

  1. sticky valves, daewoohave modified valve kits.

Posted on Sep 19, 2008

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  • 52 Answers

Is the garage you took it to a daewoo dealership? If not then try one; they should be able to run a diagnostic. If so, take to a different one.

I would think it is the o2 sensor. If you disconnected it then it sounds like you have the knowledge to replace one. When mine went bad the car didn't stall.

Posted on Aug 27, 2008

  • Maria Aug 24, 2013

    im having the simular problem with my daewoo. one of the codes that came back after changing everything else was the oxygen sensor may be faulty the fuel pump is low on pressure or it could be the fuel injectors..so many things could be causing the problem im still looking for a solution.little by little i am fixing each problem.

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