Hows it going everyone? I've got a 1990 Nissan Hardbody with the KA eng. and if I'm not mistaken it's in fail safe mode. I wanted to know if anyone could tell me how I can know for sure if it is in fail safe mode (I dont have a tach) and if it is what are some of the most common things that go wrong with this engine that could make it go into fail safe mode. Any help would be greatly appreciated. Thanks in advance