Happened after 3 hours of driving on highway while going up fairly steep incline. SES light started blinking all the up the incline then stayed on for a minute then back to blinking. Now rough idling. First time this has happened since I got the car 2 months ago. Also first time I've driven the car for longer than 2 hours straight.
What makes this problem better or worse?
Worse on inclines
How long has your 2001 Nissan Altima had this problem?
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Engine misfire is occurring - typically due to failing / failed ignition coil(s)..
Be aware that continued vehicle operation with engine misfire may damage catalytic converter.
