2000 Frontier XE "hickups" while idling at at stop (traffic light).
While I am idling at a traffic light the truck will "hickup" like it wants to stall out. When I am driving, it seems ok. At first teh hickuping was very irregular, now it is several times while I am sitting at a light. The check engine light comes on, but the last time it came on and I had it checked, nothing came up in teh codes that would match teh fuel system or O2 sensor.