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loss of power

Hey there. This may be related to to a variety of things. When your Check Engine Light comes on, generally there are fault codes that are registered in the car's computer which will indicate more specifically some of the possible...

Hello, thank you for writing in. It certainly sounds like the vehicle is losing electrical power, which is an almost definite sign that the alternator has failed. It is solely responsible for providing electrical power to the vehicle while driving....

Code P0120 (https://www.yourmechanic.com/article/p0120-obd-ii-trouble-code-tps-a-circuit-malfunction-by-jay-safford) relates to the throttle position sensor and can be caused by the following: Sticking throttle return spring MAP or TPS connector corrosion Misrouted harness causing chafing Bad TPS Bad PCM Code P0220 (https://www.yourmechanic.com/article/p0220-obd-ii-trouble-code-throttle-pedal-position-sensor-switch-circuit-b-malfunction-by-andrew-quinn) relates to the throttle...

Hello there, many common problems will cause your 2009 Buick Terraza to have a loss of engine power. The most common would be spark plugs (https://www.yourmechanic.com/services/spark-plugs-replacement), fuel pump (https://www.yourmechanic.com/services/fuel-pump-replacement), coil (https://www.yourmechanic.com/services/ignition-coil-replacement), fuel injectors (https://www.yourmechanic.com/services/fuel-injector-replacement), MAF sensor (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement), vacuum leak, oxygen...

Having your car lose power is never a pleasant experience, especially if it is in a location where it cannot stay. There could be a variety of things that can cause your Chevy Colorado to experience a loss of power....

Hello there, many faults will cause your 1985 RX-7 to not have power at the fuel pump. The most common faults are the ignition switch, a shorted wire, improper ground, or a faulty fuel pump (https://www.yourmechanic.com/services/fuel-pump-replacement). The first step will...

If the car is "flooding" (getting too much fuel), there can be a number of causes. The fuel pressure regulator (https://www.yourmechanic.com/services/fuel-pressure-regulator-replacement) may have failed, or is not getting the proper vacuum signal. A failed coolant temperature sensor (https://www.yourmechanic.com/services/coolant-temperature-switch-sensor-replacement) can cause...

Hello. From what you describe it would appear that your vehicle may be experiencing more than one issue, possibly mechanical. Loss of power and fuel efficiency can be caused by many things. A few common causes are issues with the...

Hello! There are a few components that will cause a lack of power. The leading one being that the transmission fluid may need exchanging. However, power loss may also come from a lack of fuel, air, or incorrect ignition timing....

Hi there, thanks for writing in. Most of the time this is caused by a fuel system issue. I typically check the fuel pressure first. If the pressure is low, then the pump is bad (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-fuel-pump). If the pump is...

Hi there. The reduced engine power message could mean that something went wrong with the engine or transmission. There are multiple sensors and systems in the vehicle to cause this message to appear. Hook up a scanner to the computer...

Check the wiring to the throttle pedal position sensor on the gas pedal and see if there is a loose or broken wire in the pig tail. Fix any wires that are coming apart and wrap up the wiring with...

I'm assuming that you are getting a message that says "Reduced Engine Power" in the driver information center. This is most likely due to a problem with the throttle system. There is no cable to actuate the throttle body; instead,...

Hi. The first task is to extract problem codes. Whether the Check Engine light is on or not. The most common source of the "reduced power" for these GM engines is either the wiring connector to the throttle body (https://www.yourmechanic.com/services/throttle-body-replacement)...

A faulty throttle position sensor can most certainly duplicate all of the symptoms that your Mercedes is experiencing, however a faulty fuel pump or even a defective mass airflow sensor can be the cause to these issues too. I have...

Your alternator (https://www.yourmechanic.com/services/alternator-replacement) and battery (https://www.yourmechanic.com/services/battery-replacement) may be the cause of this problem. You should have the battery completely charged and load tested (https://www.yourmechanic.com/article/how-to-check-a-car-battery) first. If it fails testing, then replace it then test the charging system. When the battery...

This may be a sign of a failing idle air control valve. The idle air control valve monitors the air intake as it is mixed with fuel prior to being injected into the engine. This valve is controlled by the...

Hi, thanks for writing in. This sounds like a bad fuel pump (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-fuel-pump) and or bad fuel filter (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-fuel-filter). The hard start may be a low fuel pressure cold causing the hard starting. Have the pressures tested and leak down...

Hello, thank you for writing in. The components you have checked thus far have been valid steps. You want to go through system by system, and make sure the engine is getting what it needs. Start with the fuel system,...

Hello. From my experience with this truck this is usually caused by a wiring issue on that side of the engine. If the ground loses connection then one side of the engine will begin to misfire (https://www.yourmechanic.com/services/engine-is-misfiring-inspection) and this will...