Why does my GMC Terrain say engine power reduced?
When the throttle body fails or becomes dirty, it can trigger Reduced Engine Power mode. One of the most common triggers is a problem with the electronic throttle actuator control (TAC) system. When the throttle body fails or becomes dirty, it can trigger Reduced Engine Power mode.
What happens when your GMC Terrain is reduced in power?
Not being able to go 40MPH (which is almost always the case) is a safety risk. When the engine power has been reduced, the engine and transmission can operate in totally different ways. This leads to jerky shifts, unstable acceleration, and horrible gas mileage. Good luck diagnosing your Terrain’s reduced engine power light.
What is the throttle position sensor on terrain?
The throttle position sensor is one of the most vital sensors in your Terrain. If it’s not responding, the ECU has no way of telling how much gas gas you’ve given it. The TPS data also helps determine when the transmission will shift.
What to do when reduced engine power comes on?
If you’re driving and the reduced engine power light comes on, the first thing you should always try to do is get the vehicle back home or to a shop immediately. If you’re already at home and the light comes on, don’t drive the vehicle.
What does the oxygen sensor on a terrain do?
Your Terrain’s oxygen sensors measure the amount of oxygen in the exhaust to help insure that the proper air/fuel mixture is realized.
Not being able to go 40MPH (which is almost always the case) is a safety risk. When the engine power has been reduced, the engine and transmission can operate in totally different ways. This leads to jerky shifts, unstable acceleration, and horrible gas mileage. Good luck diagnosing your Terrain’s reduced engine power light.
The throttle position sensor is one of the most vital sensors in your Terrain. If it’s not responding, the ECU has no way of telling how much gas gas you’ve given it. The TPS data also helps determine when the transmission will shift.
Why does my GM car have a reduced engine power warning?
Some GM vehicles will enter Reduced Engine Power Mode when the engine begins to overheat due to cooling system issues. The PCM triggers the mode to protect the engine from further damage. In some instances, the Reduced Engine Power warning may illuminate to inform the driver that the vehicle lacks power due to an underlying condition.
Your Terrain’s oxygen sensors measure the amount of oxygen in the exhaust to help insure that the proper air/fuel mixture is realized.