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1991 Buick Century 'Service Engine Soon' light goes on &

Tiny
JIMSEE
  • MEMBER
  • 1991 BUICK CENTURY
Is it a serious problem that my 'Service Engine Soon' light comes on while the engine is runing at low rpm's, but when I start accelerate the light goes off.
Tuesday, January 23rd, 2007 AT 5:05 PM

3 Replies

Tiny
JSCZYNSKI
  • MEMBER
  • 48 POSTS
Re:1991 Buick Century 3.3L3300v6 code N engine.

I have the same engine and year of car. My service engine soon light came on and off after I replaced the fuel pump. Dealer Ran on Tech 1 and found my O2 sensor was on the fritz. They said go to Autozone and get an oxygen sensor and the light will correct itself. The part cost $20.00 plus the tool and taxes so under $40.00 total.

To this day that light has remained off and I normally get 300 miles on a full tank of gas.

My car has 184,000 miles on it!
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Wednesday, January 24th, 2007 AT 7:10 PM
Tiny
JIMSEE
  • MEMBER
  • 1 POST
Thank you so much for your knowledgeable reply.
Jim
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Monday, January 29th, 2007 AT 4:32 PM
Tiny
JSCZYNSKI
  • MEMBER
  • 48 POSTS
Your welcome :D
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Wednesday, January 31st, 2007 AT 8:44 AM

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