1999 Daewoo Leganza check engine light (CEL)

Tiny
MZCATHY
  • MEMBER
  • 1999 DAEWOO LEGANZA
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 82,000 MILES
My CEL has been on for a while. I finally went to AutoZone and I had to change the CO2 sensors(2) and the camshaft sensor. These were changed and the mechanic said I had to drive it from 80 - 100 miles so the system can reset before it can go out. The car is now at 85 miles since the change and the light goes off sometimes but comes back on. My battery cables are loose and I have to push them back on sometimes when my car doesnt start. Could this be the problem as to why the light doesnt stay off? I've had so many problems with thee particular parts. Please Help.
Monday, August 17th, 2009 AT 3:58 PM

3 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi mzcathy,

Thank you for the donation.

For the computer to relearn, there must be continous power supply even when engine is turned off. Any interruption to the memory power supply would cause the ECM to reset and that is one of the possible reason why some of the sensors are not ready yet.

If the battery terminals are loose and cannot be tightened, you could either replace the terminals or add a wedge to get them secured.

If after securing the terminals and the MIL still appears, then you would need to go into diagnostics to see what is causing the problem and if the codes are for the O2 sensor.
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Monday, August 17th, 2009 AT 8:08 PM
Tiny
MZCATHY
  • MEMBER
  • 2 POSTS
Hey KHLow - Thanks 4 your response. Makes total sense! I'm having the cables changed today and will wait an additional 80-100 miles (geesh) for everything to reset. I'm sure everything will be fine afterwards. Feels good knowing that I can always log on here to get help. Sincerely - Mzcathy
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Tuesday, August 18th, 2009 AT 8:26 AM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Glad to be of help.

Anytime you got any questions you are welcomed to ask them here. However due to overhelming questions coming in, new post might be missed out.

Reply to this post and I would be notified and can get back to you once I am online.

Thank you for using 2carpros
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Tuesday, August 18th, 2009 AT 8:37 AM

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