My car stopped picking up speed
My engine light came on and was flashing then as I was driving my car started to Judda and the car was finding it hard to pick up speed it was only going upto 10 mph and wasn't moving am not sure what is wrong it it it's only been few weeks since I got the car fully serviced
My car has 69000 miles.
My car has a manual transmission.
Experienced mechanics share their insights in answering this question :
When the check engine light is flashing, it means that you might do damage to the car by continuing to drive. In this case it sounds like you are experiencing a misfire and that means you run the risk of damaging the catalyst. There are a number of possible causes for a misfire, most of them in the ignition system, but if you’ve had the car recently serviced, there might be a connection so you may want to return the car to the shop where the service was performed. If for some reason you don’t want to go back there, or if you feel like you want to know what is wrong before you do, you can contact Your Mechanic to have a technician come out to your home or office to check out your misfire and let you know what is going on and what it will take to fix it.
How to Identify and Fix Common car Problems ?
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When the engine misfires, you may have trouble getting your vehicle up to speed. Misfires often happen when your vehicle is under load while accelerating. This can result in slow or sluggish acceleration or a jerking motion while pressing down on the accelerator.
It could be an issue with the throttle body, gas tank, spark plugs, or the ECU. Worn spark plugs or a dirty air filter can also cause this problem. Low fuel pressure or a clogged fuel filter can also be the culprit. Bring your car into our shop and we`ll take a look at it to see what`s causing the hesitation.
An engine misfire is when one or more cylinders doesn`t produce power, and there are several possible causes, from a fouled spark plug to a clogged fuel injector or faulty oxygen sensor.
A misfiring cylinder can cause a proportional loss of power. For example, if one cylinder misfires in a four-cylinder engine, the car will lose 25 percent of its power.
Trouble accelerating can come from a few different engine issues. These include, but are not limited to, dirty fuel injectors, low fuel pressure, and restricted airflow. A problem with the mass airflow sensor, throttle position sensor, or engine speed sensor can also cause a car to have difficulty picking up speed.
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.
Engine misfiring happens due to incomplete combustion in one or more engine cylinders, reducing the power delivered and causing sluggish acceleration. Multiple reasons can cause this, such as a clogged air or fuel filter, a weak fuel pump, or defective spark plugs.
The most common causes of misfires are worn, improperly installed, and mishandled spark plugs, malfunctioning ignition coils, carbon tracking, faulty spark plug wires and vacuum leaks.
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.
Dirty fuel injectors are among the most common reasons for why an accelerator becomes jerky. The dirty injector leads to your car losing power when you attempt to accelerate while at a stop and when you try to drive at a consistent speed. This is the result of an engine misfire.
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.
The most common cause of poor engine airflow is a clogged or damaged air filter. The air filter in your car protects the engine by catching all kinds of debris before it can enter the cylinder and cause more damage.
If a spark plug or multiple spark plugs are faulty, they will have trouble creating the spark that causes the ignition process in your vehicle. This results in your vehicle having trouble starting, hesitating or having issues with accelerating properly.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
car is barely picking up speed from stationary position to 3rd gear
Hi there. Check the turbo on the engine. With the loss of power until the vehicle is driven normally after 100 meters and the lack of power going up steep hills, the turbo could have failed causing the engine to lose power. Remove the intake hose to the turbo and start the engine. Look to see if the turbo is spooling up or not. If its not spooling up, then the turbo shaft could be seized and would need replaced other wise the waste gate could be not functioning causing the turbo to stop boosting. I recommend seeking out a professional, such as one from Your Mechanic, to help you diagnose your loss of power.
Why does the AC stop cooling the car once the car speed exceeds about 80 Km/h?
The A/C thermal expansion valve (TXV) most likely is the cause of the A/C system freezing up at higher engine or vehicle speeds. The TXV controls the flow of refrigerant through the evaporator and the valve can stick open causing the system to not get cold after it opens or the valve will stick on an almost closed position and cause the orifice to freeze up and cannot control the correct amount of refrigerant flow through the evaporator. The A/C system should be performance tested and checked for pressures to make sure the system has enough refrigerant or the TXV is the cause of the problems. The TXV is mounted to the evaporator and can be replaced separate from the evaporator. If you would like to have this inspected, a certified technician from YourMechanic can come to your car’s location to diagnose the AC issue in person and pinpoint needed repairs.
I was stopped on the freeway, started to go about 5 mph, the car jerked and stop without warning like the wheels locked up.
Hi, thanks for writing in. I’d be happy to try to help. It is hard to definitively diagnose what the issue is. At first it seems like a transmission issue. Automatic transmissions are rather complicated and can do strange things when they malfunction. If not an issue with the transmission, you could also have a clutch issue. Always start by checking the simple components first. Check your transmission fluid level. Make sure your transmission filter is clean and debris free. When you have the transmission pan off, you can look and see if there are any metal shavings at the bottom. There is often a small magnet at the bottom of the pan designed to gather any metal shavings for a quick diagnosis. This is a sign of more serious transmission problems. Unless you have experience with automatic transmissions, it is not recommended that major repairs be done at home. I suggest taking your car to a transmission specialist for help.
Car not speeding up smoothly, service engine light on when first start driving and car vibrating
It sounds like you may have a dirty or faulty mass air flow sensor. The problem this can cause may also be compounded when the engine is cold due to the change in air density in cooler weather. The mass air flow sensor monitors air intake as it is mixed with fuel prior to being injected into the motor. This sensor relays information about fuel and air temperature, air speed entering the motor and many other things to the ECM which uses this to make adjustments to fuel supply to the motor. A dirty or faulty sensor can cause an imbalanced air/fuel load to be supplied to the motor which results in an over fueling or under fueling situation depending on the conditions. This type of inconsistent fuel supply to the motor may cause a hesitation, loss of power, a jerking reaction, potentially a bit of black exhaust smoke and typically a strong smell of fuel when this sensor is malfunctioning. I would suggest having a professional from Your Mechanic come to your home to diagnose and inspect your vehicle.
When I stop at the stop light or a stop sign my car shuts off.
It sounds like you may have a dirty or 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 at low speeds and at idle. This valve is controlled by the vehicle’s computer and will adjust idle speed based upon other measurements such as engine temperature, intake air temperature and electrical system load or voltage. This is also an important function when starting the motor as it allows the motor to run and idle on it’s own once the motor fires. When you accelerate, the engine RPM increases, and as you let off the gas, the RPM slowly returns to the normal idling speed with the help of the idle air control valve making the transition from a higher RPM back down to idle speed while adjusting the air/fuel ratio constantly to allow this to happen smoothly. When the engine RPM drops below the normal range of about ~800 RPM, this often times will cause the engine to stall indicating a dirty or faulty idle air control valve. I would recommend having an expert from YourMechanic come to your location to diagnose and inspect your vehicle.
Car stalls, and then stops, after I restart it goes a bit and stops again. Speed is low
Hi and thanks for contacting YourMechanic. All three codes refer to the pressure control solenoid in the transmission. Check the fluid level and top it off if the fluid is low. Check the harness to the transmission for any corrosion, moisture, oil, or any broken / bent pins. If the fluid is good and the harness is good, then you will need to replace the pressure control solenoid. If you need further assistance troubleshooting your transmission, then seek out a technician, such as one from YourMechanic, that can diagnose your vehicle’s stalling problem and assist with repairs.
While driving at a speed of 40 mph all at a sudden the car speed dropped to 10 mph and stopped with solid check engine light
Hello. Warning lights accompanied with stalling can be caused by many things. If the oil is low I would go ahead and top it off to prevent the possibility of engine damage, however, it is unlikely that low oil is what caused the stalling. Stalling is most commonly caused by issues with the ignition, engine management, or fuel systems. If one of the components, such as a major sensor, the fuel pump, or the ignition coil, go out or have an issue they can cause the engine to stall. If the vehicle is no longer starting then it may be possible that there is an issue with the electrical system as well, perhaps a faulty battery or alternator. If the alternator goes out it will eventually drain the battery, which could also cause stalling. Scanning the computer for trouble codes, once the vehicle is started, will likely reveal some insight into what the issue may be. As the possibilities could be many, I would recommend having a professional technician, such as one from YourMechanic, come to your location diagnose what may have caused your vehicle to stall.
My heat in my car stopped working two days ago and now my car is overheating. I put antifreeze in my car and it’s still overheating 2006 Pontiac Grand Prix
Hi there – you may have 2 related events here, a coolant leak, and a problem with the heater system. The current issue may be air inside the cooling system, which can cause overheating, and a lack of heater function. The lack of heater function could have 5 causes: the engine is not getting up to correct temperature (center of the gauge) due to a malfunctioning thermostat, the heater control valve is not letting hot coolant into the heater core, there is a restriction in the heater system that is preventing adequate hot coolant flow through the heater core, the heater fan is not working to transfer heat from the heater core to warm air for the passenger compartment, or the air blend doors inside the heater are not working properly to route warm air to the desired vents. I would recommend a heater system inspection](https://www.yourmechanic.com/services/heater-is-not-working-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.