


Engine idles rough.Īre few help links with solutions to troubleshoot such idle issues. With IAC( idle air control valve) causing the problem.Īre many other possibilities causing these idle issues. This vehicle idled poorly and eventually had a P1102 check engine light. They can provide a more accurate assessment of the issue and recommend the best course of action. In this video I show you how I troubleshoot and replace a Mass Air Flow (MAF) sensor on a 2003 Nissan Altima. You should also inspect the mass air flow sensor, as a faulty one can throw off the air-fuel ratio of the engine.įinally, if the problem still persists after inspecting the spark plugs, ignition coils, and mass air flow sensor, then you should consider consulting a professional mechanic for further diagnosis. If they are faulty, they can cause misfiring and rough idling. Both of these components are integral to the proper functioning of the engine. To start troubleshooting, you should begin by checking the spark plugs and ignition coils. The pending codes indicate a system that is too lean on Bank 1 and a cylinder 2 misfire. The current fault codes point to a system that is running too lean on Bank 2 and misfiring in multiple cylinders. In your case, two current fault codes and two pending fault codes were recorded. The Torque app can provide you with some diagnostic codes which can help you narrow down the problem. If you're experiencing a rough idle in your 2011 Nissan Altima, the first thing you should do is diagnose the issue.
