barrometric sensor, vane air meter, short/corroded injector harness, the injectors have a constant positive 12 volt signal, and are triggered by a ground signal. if you have 12 volts to one side key on then it's a signal issue not power, and if it is a vane air problem the car will run without it plugged in, but if the door inside it is shut it wont draw air, should also run without a barrometric sensor, but strange things happen when the signal goes way out of range. i believe most of the injector pulse is ran off the distributor/ tfi signal, that's why i think its a harness connection or broken wire. |