1998 Nissan Altima Q&A
1998 Nissan Altima Question: car consuming so much gas,whats the problem?
Could be a stuck open thermostat, faulty coolant temperature sensor - these problems won't let the ECM to switch to closed loop mode, bad O2 sensor, wrong spark plugs, intake leak, bad fuel injectors, engine mechanical fault - low compression, etc.... I'd take the car to a good repair shop and let them to check it since so many different thing could cause this condition. Zee - ZeeTech