Q: Van won't start unless pushing on the gas pedal repeatedly

Hi Michelle. Thanks for contacting us tonight. It’s quite possible that you have a few, independent issues going on with your Quest. First off, when you have to continually press the gas pedal in order for the engine to start, it means one of two things - either the engine is not getting the right amount of air/fuel ratio or it’s unable to ignite that mixture of fuel and air. Although the crankshaft and cam position sensor does impact ignition timing and can cause these issues, it’s more common that the electrical harness connecting to these sensors is the actual cause of the problem. This might be why after replacing the sensor, the same issues continued (and if I’m understanding you correct - got worse). However, all those additional warning lights you’ve listed does raise a red flag - that perhaps an issue with the ECU exists - or the idle control valve, mass air flow sensor or other fuel system issues exist. As you can see - there are MULTIPLE possibilities here, so it’s probably best to have a professional mechanic come to your location to complete an on-site inspection, so they can get a personal view of the symptoms, all stored error codes and determine what is the best course of action.