Hi all...
my daewoo has finally started to act wierd 
early symptoms were the check engine light would go off after 10-15 sec of engine starting... the engine would rev higher 3K rpm till the light goes off... this continued for like 2 weeks
now the check engine light wont go off.. the car is parked and im on my Jeep 
here is the troubleshooting done so far...
Tried to switch ECM to diagnostic mode. The check engine light wont flash the code 12. suspected a faulty light.
removed ECM and the light went off on ignition. so the lights is OK.
All i get is a steady light ON with no code 12
Book says that either the MEM-CAL (the engine calibrator board) is faulty or the ECM is faulty.. im glad to hear that 
next im going to test this ECM on another daewoo.. to confirm its faulty 
then get a kabli one.. anyone knows how much an ECM of daewoo costs these dayz ?
Anybody else having such issue.. do share