Greetings,
I have 96 Maxima, and the check engine light is on, the garage I took it too put it on the scope which told him the O2 sensor and knock sensor were the problem. These were replaced but two days later the check engine came back on. Then I noticed the smell of coolant once or twice with the heater running. The car runs fine, but should I be concerned about this smell? Could there be a leak in the cooling system... it doesn't overheat, and the heater works great.
Thanks,
Laura Ottawa, Canada