I hope this answer doesn't come too late, but this is a common fault on the Leganza. You need to replace the earth connection to the unit. It's quite easy to do, and doesn't need any specialist tools or knowledge. Remove the trim around the unit, unscrew it, and pull out. You need to identify the earth (thick black wire usually), and connect it to a good metal connection elsewhere. I ran mine to the negative pole of the cigarette lighter, and it's worked perfectly since. HTH.
Daewoo Leganza was created in 1997.
On the Daewoo Leganza it is located behind the AC compressor.
HOW MANY POWER STEERING HOSES ON A DAEWOO LEGANZA 2000
yes
Were and how do you change a brake light switch on a Daewoo Leganza 2001
andything from1.0 - 2.00ltr Leganza normally 1.6 - 1.8 - 2.0 the daewoo leganza sx has a 2.2ltr
Where is pcv valve on 1998 daewoo leganza
Where is the fuse for the heater for the daewoo leganza? In:http://wiki.answers.com/Q/FAQ/913-2[Edit categories]
daewoo manualtry eBay
The Daewoo Company Korea I believe
No
more than likely to be the idle control valve common prob on the leganza