le.
I was driving down the road and lost power. Stepped on the gas and the car wouldn’t accelerate, but didn’t rev up either. Got back home on idle.

Driving dowm the road about 25 felt that car slowed down stepped on gas it wouldnt speed up but it didnt rev up either
Got home it stalled wouldnt restart. Unplugged battery cable it restarted and seems ok but not right

My car has 194192 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
Sounds as if the throttle pedal position sensor is not responding when stepping on the gas pedal. Try turning on the ignition key to the ’ON’ position with the engine off and step on the gas pedal to the floor. Then while the pedal is on the floor, turn off the key. Then turn on the key to the ’ON’ position with the engine off and release the gas pedal to the rest position. Then turn off the key. This procedure will reset the throttle pedal position sensor on the gas pedal and should allow the vehicle to rev up the engine normally. If you need further assistance with your engine not revving up when pressing on the gas pedal, then seek out a professional, such as one from Your Mechanic, to help you.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

There are several causes for your car to lose power significantly while accelerating. The most typical causes of a car not accelerating while driving include a faulty sensor, contaminated fuel or air filters, or a faulty timing belt. Generally, this isn`t something you should ignore.
The most likely issue is that a component is clogged. A clogged fuel filter is the most common reason, although a loss of power in your car could also indicate problems with the fuel pump or fuel line. Impurities or debris may be blocking the system, which causes the loss of power in a car.
Why does my car not accelerate when I push the gas? A car not accelerating properly can be caused by a number of things. It could be due to the throttle body, gas tank, spark plugs, or the ECU. It could also be because you have a dirty air filter or a clogged fuel filter.
Clean air filters and fuel injectors will reduce the strain on your car. An engaged emergency brake causes the brake to drag slowing down your car. Disengage the brake to solve this issue. Sometimes acceleration problems are just because of low fuel or poor quality of fuel.
The Mass Airflow Sensor (MAF) measures the amount of air the car needs to accelerate. Once it gets that measurement it sends this information to the ECU which notifies the throttle to open accordingly. If the MAF is faulty and not measuring the airflow properly then you could experience a serious loss in power.
Culprits include a dirty fuel filter, clogged fuel tank strainer, clogged or failing fuel injectors, or a defective fuel pump. On most vehicles replacing the fuel filter is a DIY operation.
Faulty spark plugs result in an engine misfire due to incomplete burning fuel. An interrupted combustion process can significantly affect the engine performance. Unattended engine misfire may result in intermittent strange engine sounds, power loss, and engine knock.
When you press down the accelerator pedal and get minimal output, it could mean you have a problem with your fuel system. The most probable issue is a clogged fuel filter. Your fuel filter works to ensure that dirt and debris do not get into the fuel system.
When a throttle body is not functioning correctly, you`ll usually notice a distinctly poor or very low idle. If the problem is really severe, you might even begin stalling when coming to a stop or when the throttle is quickly pressed.
The most common reason why the “engine power reduced” message appears for Chevy Equinox SUVs is because of a dirty throttle body. Usually, there are some signs that your car has a dirty throttle body. To avoid getting this troublesome message, keep a lookout for the following red flags: Reduced fuel economy.
Will a bad O2 sensor cause rough idle and loss of engine power? You bet. Moreover, you may also notice poor acceleration, engine misfires, and even stalling. Bad oxygen sensors disrupt all kinds of essential engine functions, including engine timing, combustion intervals, and air-fuel ratio.
A bad carburetor may result in an engine with sluggish acceleration, and a noticeable reduction in power and fuel efficiency.
The most common car electrical system problems are problems with your car battery, an alternator that isn`t working properly, loose or failed spark plugs, a fatigued solenoid or starter, bad battery cables, electrical fuses that are blown, loose wires, or problems with your ignition switch.
When an alternator fails, electricity and lights in your car will lose power, and your battery will not charge properly. It`s important to recognize signs of a failing alternator.
This symptom often points to an issue with either your exhaust system, fuel or dirty or worn out parts. In internal combustion running vehicles, and incomplete combustion will cause a sputter. And while a sputtering engine might not seem like a serious issue, it often results in an expensive repair when ignored.
This is a common symptom of a plug or wire electrical current problem. Air or Vacuum Hose – Another common cause for engine vibration and power loss is when air or vacuum hoses come loose, begin to leak, or rupture. The three necessities for all combustion engines are air, fuel, and spark.
If you press or let up on the pedal, there will be a delay before the engine responds. This is because of the time it takes the throttle motor to activate the throttle opening. Throttle response should be nearly immediate and not delayed.
A failing camshaft position sensor begins losing its ability to quickly transfer data. Mismatched fuel delivery and ignition timing, even if off by a few milliseconds, will cause your vehicle to sputter, accelerate poorly, lack power, stall or even shut off.
if the map sensor starts to fail, these are some of the most common symptoms: 1. your engine accelerates poorly: if a map sensor fails, it can cause the engine`s computer to miscalculate the amount of fuel and ignition timing needed for proper engine performance. this will cause the engine to run poorly and lose power.
There are several causes for your car to lose power significantly while accelerating. The most typical causes of a car not accelerating while driving include a faulty sensor, contaminated fuel or air filters, or a faulty timing belt. Generally, this isn`t something you should ignore.
If you do have a blown engine, whether or not it can be fixed depends upon the extensiveness of the damage. If the damage is minimal, and a few parts can be replaced, the problem can be fixed. However, if the damage is great and impossible to repair, you may need a complete engine replacement.
The throttle body is a critical component of the engine`s fuel delivery system. If it malfunctions or gets clogged, it can cause the “Reduced Engine Power” light to come on. Symptoms of a faulty throttle body include hesitation, rough idling, and poor acceleration.
A bad MAF sensor can cause your vehicle to experience poor drivability issues such as engine stalling, jerking or hesitation during acceleration.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

I was driving down the road and lost power. Stepped on the gas and the car wouldn’t accelerate, but didn’t rev up either. Got back home on idle.
ANSWER : Sounds as if the throttle pedal position sensor is not responding when stepping on the gas pedal. Try turning on the ignition key to the ’ON’ position with the engine off and step on the gas pedal to the floor. Then while the pedal is on the floor, turn off the key. Then turn on the key to the ’ON’ position with the engine off and release the gas pedal to the rest position. Then turn off the key. This procedure will reset the throttle pedal position sensor on the gas pedal and should allow the vehicle to rev up the engine normally. If you need further assistance with your engine not revving up when pressing on the gas pedal, then seek out a professional, such as one from Your Mechanic, to help you.

I was driving on the highway and I lost power and the car cut off. The car will not start back up and it has gas in it has coming through the gas line.
ANSWER : Hi there. Check the ignition system and see if the spark plugs are sparking. If the spark plugs are not sparking, then check for power to the ignition coil. If there is no power to the ignition coil, then check the crankshaft position sensor. The sensor may have failed causing the computer to cut out the ignition circuit. If you need further assistance with your engine not starting back up from a shut down, then seek out a professional, such as one from Your Mechanic, to help you.

1994Camaro 1994 Chevrolet Camaro Base 6 Cyl 3.4L My car is accelerating with me stepping on the gas I was driving fine all day
ANSWER : The throttle on this car has a cable and you should check the floor mat to make sure it is not holding the throttle pedal. Also, look at the throttle body to make sure something is not holding the throttle open. If everything looks okay, then check to see if your idle air valve may be stuck. This can be done by a computer test to see if it is setting a code. A technician from YourMechanic can come to your car’s location to have this checked out if you are still having problems.

My car shuts off while driving and then turns back on multiple times or shuts off after driving and car turns off.
ANSWER : Hi there. Check the alternator and make sure that the wiring it connected tight. Check the battery cables and make sure that they are tight and clean. Look for any loose ground wires to the chassis on the vehicle. If everything checks out to be working correctly, then the PCM may need to be replaced as it may have a battery disconnect condition. If you need further assistance with multiple functions shutting off, then seek out a professional, such as one from Your Mechanic, to help you.

I got gas the day after my car stopped moving after applying the brake at a stop sign. Now it wont drive 2008 Chevy Aveo
ANSWER : Hi – first thing to check is for proper transmission fluid level. If fluid level is correct, this may be a transmission failure (forward clutches). I would recommend a transmission inspection by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

Car shifts hard and rpms rev high on there own or car doesn’t shift at all, ABS and traction control lights are on also. 2005 Chevrolet Cobalt
ANSWER : Hi there – first task is to be sure the transmission fluid is at the proper level, and in good condition (more pink than black, and no burned smell). Low fluid, or dirty fluid, can cause lots of unexpected transmission behavior. The second task is to check for problem codes, whether the Check Engine light is illuminated or not. The possible problem we’re looking for here is a failing throttle position sensor – which interacts with the transmission controller and affects shifting behavior. I recommend a transmission inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, and give you an accurate assessment of damage and cost estimate for repairs.

Car is having acceleration problems
ANSWER : Hi there. Acceleration issues can be caused by several different items. However, the ticking noise might present a possible issue. In some case, the ticking noise and acceleration issues indicate possibly a loose timing belt or cylinder head components like valve lifters. It could also indicate a random misfire or other ignition system or fuel delivery problems. The best way to pinpoint the source of your issue is to have one of our professional mobile mechanics come to your location and complete a car is slow to accelerate inspection.

Purchased a battery last November…Recently my battery light came on. Then now my car lost power and it won’t drive forward?
ANSWER : Hello, thank you for writing in. The warning light is indicating an issue with the charging system in general. This means the alternator may also be having issues keeping the battery charged. This also validates you issues while driving, as the alternator is what supplies the vehicle with power once the car is started. When all of the warning lights illuminate, it is because they all depend on the alternator’s electrical supply, and are not getting it. You can have the alternator tested on the vehicle, or remove it and have it bench tested. For more help with this, contact our service department to schedule an appointment.