How to Replace MAP Sensor GMC Envoy скачать в хорошем качестве

How to Replace MAP Sensor GMC Envoy

*Check out the tools we used below. If the video was helpful, please give it a "thumbs up" and consider subscribing to the channel.* This video goes over how to replace a MAP Sensor on a 2004 GMC Envoy with a 4.2 motor. This would be the same process for any 2002-2009 (Second Generation) GMC Envoy with a 4.2. The car's ECM uses a Manifold Absolute Pressure [MAP] sensor to measure vacuum levels in the intake manifold, which indicates engine load. It uses this to calculate correct engine spark advance and fuel injector pulse for best performance. The map sensor converts vacuum/manifold pressure to the ECM computer so it can control the engine load that it is under. If the map sensor fails, it can cause issues with the fuel system and vehicle performance. If an ECM can’t accurately detect engine load, it will affect the air fuel ratio becoming rich [too much fuel] or lean [too little fuel], affecting the vehicles overall driving ability. It compensates for weather, altitude or your various driving conditions. Signs of a bad MAP would be a check engine light, poor idle, hard starting, misfiring, a change in fuel consumption or lack of engine performance. Tools needed: Hand Cleaner -- -- https://amzn.to/4scnFh4 Shop Towels -- -- https://amzn.to/3CZm84v Parts: MAP Sensor -- -- https://amzn.to/4aDG94n These are the tools we used or something that’s similar. There are many manufacturers and various prices. It's a good idea to buy the better tool with the best warranty and easiest exchange in case of tool failure. Disclaimer: The Auto Teacher assumes no liability for property damage or injury that happens as a result of any of the information contained in this video. Any information learned from this video is to be used at your own risk. The Auto Teacher recommends safety first! Protective gloves, safety glasses and jack stands are highly recommended. These tutorials are made strictly to help people with their car projects and are given to provide factual information we’ve learned over the past 40 years working on cars. We do not guarantee any particular result or any particular warranty. Any injury, loss or damage contained by the viewer while attempting to follow the video’s instructions is solely the viewer’s fault and not The Auto Teacher.