- #2011 NISSAN SENTRA MASS AIR FLOW SENSOR PROBLEMS HOW TO#
- #2011 NISSAN SENTRA MASS AIR FLOW SENSOR PROBLEMS CODE#
It’s not safe to drive a car that has a bad throttle body. You may also be required to replace a sensor if the check engine light generated a sensor-related code. In some cases, you can get away with just making sure that it’s clean. The throttle body is located right in front of the intake plenum in the 6 th generation Nissan Sentra. This helps to ensure that there’s enough air for combustion-especially during acceleration. The throttle body controls the amount of air flowing into the engine. Some of the symptoms that you may notice when you have a throttle body that has gone bad or one that is almost failing include a rough idle, an engine that struggles to accelerate, and a Check Engine Light that generates a throttle body trouble code. Throttle Body Failure Symptoms of a Bad Throttle Body The best option is to replace them together with the spark plugs and gasket. You’ll need to remove the intake plenum to access the ignition coils. They increase the voltage they receive from the battery to help create a spark that ignites the fuel and air mixture inside the engine. The ignition coils in the Nissan Sentra are located just underneath the intake plenum. When the ignition coils go bad, some of the symptoms that you’ll get include an engine that’s running rough and a check engine light that may be flashing. Ignition Coil Failure Symptoms of Bad Ignition Coils
#2011 NISSAN SENTRA MASS AIR FLOW SENSOR PROBLEMS HOW TO#
For more information on how to diagnose a bad mass air flow sensor, chat with a knowledgeable expert at your local NAPA AUTO PARTS store.Top Issues 6th Gen Nissan Sentra (2007 to 2012) 1. And considering how easy it is, there’s really no excuse not to.įor an example of a typical repair, here’s how to replace a MAF sensor on a 2003 Ford Escape 3.0L V6 engine:Ĭheck out all the relays, sensors and switches available on NAPA online or trust one of our 17,000 NAPA AutoCare locations for routine maintenance and repairs. MAF sensors give valuable information to engines with electronic fuel injected systems, so you don’t want to delay in getting it fixed if yours is acting up. And that’s it! Just swap ’em out and your engine performance should improve. Oftentimes the flow is indicated with an arrow, but otherwise, the included instructions should tell you. Make sure to keep the new one clean, and pay close attention when installing it to ensure that it’s facing the correct way. Oftentimes, it’s as easy as disconnecting a clamp, a few bolts and the electrical connector. Since it’s right next to the air filter, they’re usually very accessible without having to remove too much (if anything) to get to them. Luckily, it’s a pretty straightforward job. In this case, they can be cleaned but if it is a mechanical or electrical failure, they must be replaced. MAF sensors can become damaged, but more often they just get too dirty to do their job well. Once you ensure it is, in fact, the sensor, it’s time for a change. You or a qualified mechanic will have to troubleshoot whether it is the MAF sensor, the electrical circuit, the ECU, or another component entirely that is causing the problem.
#2011 NISSAN SENTRA MASS AIR FLOW SENSOR PROBLEMS CODE#
A check engine light may yield a code about lean or rich mixtures, but it won’t pinpoint the MAF sensor itself. So your fuel economy will fall, and your performance will suffer. First off, your air-fuel ratio will be wrong, so you’ll have a case of lean or rich mixtures. When the MAF sensor isn’t working, you’ll know it. So it’s important to get proper readings from the MAF so that the ECU can do its job maintaining the correct ratio. This can create misfires, rough idles, and may make the engine difficult to start at all. Not only does this affect your fuel economy, but it can create untimed detonations or “knocking,” and can leave a nasty buildup of particles in the combustion chamber, mucking up your spark plugs in the process. Too much fuel gives you a “rich” mixture, and there will be some left over after the combustion. The ECU sees this reading and adjusts the fuel volume that passes through the injectors. It takes account of the air flow and converts it to an electrical signal sent to the ECU. Check My FlowĪ MAF sensor is usually placed in-line immediately after the air filter, and takes a reading of how much air is entering the engine. This is when having a bad Mass Air Flow sensor (MAF) becomes a problem. To do this, it needs to read measurements about how much air is going into the engine at any given time. So when one increases or decreases, the computer (ECU) endeavors to maintain the perfect mixture. Air and fuel need to be metered out in an exact ratio for optimal performance. The internal workings of a car engine are complex and precise, but if all is well mechanically, a gasoline engine needs three things to run: air, fuel, and spark.