2002 Buick Lesabre Possibly misfiring or coils bad

2002 BUICK LESABRE
98,000 MILES
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LRE1943
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When engine is started it idles rough and will stall when driving. A burning smell comes through the vents and the engine light comes on in the panel. It has been serviced and upkeep on a regular basis.
Sep 7, 2013 at 11:42 PM
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STRAILER
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Does the car have any trouble codes?

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please let me know, I want to help you with this problem.
Sep 8, 2013 at 12:19 AM