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2002 Buick Lesabre Service Engine soon light

Tiny
DUCK16652
  • MEMBER
  • 2002 BUICK LESABRE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 100,000 MILES
My car has the "Service Engine Soon" light coming on and then going off. It will be off perhaps 20% of the time and on 80% of the time. Car runs fine.
I took it to my mechanic last week and he told me the oxygen sensor need replaced per the computer. He replaced it, and a half hour after leaving the shop, the light came back on. Took it back and he said he couldn't find the problem and he replace the new wensor with the old one and returned muy money.

I hate dealers with a pasion and they will just start replaceing things till the light goes out, not caring a bit about trhe cost to the owner.

Any ideas?
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Tuesday, March 31st, 2009 AT 2:48 PM

1 Reply

Tiny
ZACKMAN
  • MECHANIC
  • 4,202 POSTS
Do you have the check engine light code number from your mechanic? If you do, please post it here for proper diagnostic. If you don't, take the vehicle to Autozone, they can pull the codes for free, and then post the code number.
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Tuesday, March 31st, 2009 AT 10:55 PM

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