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hesitation

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How to Troubleshoot a Hesitating or Bucking Car
Hesitating cars and bucking cars often have worn out fuel filters, fuel pumps, oxygen sensors, EGR valves, spark plugs, or air filters.
Symptoms of a Bad or Failing Speed Sensor
Common signs include harsh or improper shifting, cruise control not working, and the Check Engine Light coming on.
How Long Does a Cylinder Head Temperature Sensor Last?
The engine’s performance is largely based on temperature measurements performed by the engine control module (ECM), also known as the vehicle’s computer. As the temperature of the engine increases, the...

Related questions

Question
I have changed my crankcase oil separator on my BMW e90 and now it's jerking at 1500rpm.
If you left any connectors loose or broke and seals in the process of the repair, a bad vacuum leak may cause your concerns. A technician equipped with a professional scanner may be able to hook up to the car...
Question
I have a 2007 GMC Acadia and I'm experiencing a hesitation when I accelerate from a stop.
Hi there. The hesitation would be a communication error with the transmission. Also, if the transmission is low on fluid there could be a hesitation when accelerating. Check the transmission fluid level and make sure that it is full. Check...
Question
When I turn on the AC, the malfunction light comes on and the car doesn't accelerate well and starts jerking.
The trouble code stored in the vehicles computer may shed some light on what's going on. Turning on the AC adds an extra load to the engine and the computer picked up some trouble when the data figures changed. Consider...
Question
I start the car when it's cold. It starts normal then almost dies then returns to normal idle. Now it hesitates on acceleration.
Hi there. Check the idle air control valve (IAC) and see if its working. The IAC is designed to make the engine run at idle in all climate conditions. Also, check the mass air flow sensor (MAF) and see if...
Question
I feel a bit of hesitation when slowly rolling forward, but not when accelerating quickly.
Hello, thank you for writing in. The vehicle could be hesitating for several different reasons. The first thing to check would be the air intake system. This would include the air filter and air intake sensors. The sensors are best...
Question
engine hesitates and knocks
Hello, thank you for writing in. Hesitation and knocking can come from several different components. The work you have done so far is perfect and allows us to focus on other systems. When it comes to hesitation the oxygen sensors...
Question
Intermittent performance issues
Hello. From what you describe it would appear that your vehicle may be experiencing performance issues, possibly misfires. Symptoms like these can be caused by a wide variety of reasons. Problems ranging from issues with the fuel system, to a...
Question
My car jerks when I accelerate
This may be a sign of a dirty or failing mass air flow sensor. The mass air flow sensor reads the air intake as it is mixed with fuel prior to being injected into the motor. When this fails, this...
Question
Car will start and run smoothly but will die when you try to accelerate.
Hi there. There may be a misfire on a cylinder that is causing the engine to hesitate on acceleration. Check all of the spark plugs and wires and see if they have burn marks. If there is burn marks on...
Question
What is causing my car to shut down when I make turns
Hello, thank you for writing in. The vehicle is being limited either physically due to an obstruction, or it is losing engine power during the turn. Any physical obstruction should be able to be located with a proper inspection. This...
Question
Hesitation when shifting gear and clanking noise and lack of power during acceleration
Hi there. It would appear there is a combination of problems happening with your vehicle. First, the transmission fluid and engine oil leak(s) need to be addressed. The fluid loss may account for the burning smell. The Check Engine Light...
Question
05 Monty Carlo problem is hesitate and surgery between 45 to55mph. It is the throttle body sensor. It has 14400.00 miles replace
There are quite a few possibilities that a mechanic would consider in diagnosing an engine hesitation issue. The most efficient thing is do is schedule a hesitation diagnostic and the responding certified mechanic will simply go through a diagnostic "decision...
Question
my engine is louder than usual it seemed to be overworking today it was vibrating then while driving I smelled strong burnt like s
Hello, thank you for writing in. The vibration is coming from the engine not working correctly. The cause of this is the focus of our attention. The white smoke is a sign that a fluid of some sort is being...
Question
My car is jerking and hesitating when accelerating
This may be a sign of a dirty or failing mass air flow sensor. The mass air flow sensor reads the air intake as it is mixed with fuel prior to being injected into the motor. When this fails, this...
Question
The engine hesitates and dies if the lights and AC are on together
Hello. The idle air controller is suspect in this scenario - either needs to be replaced or cleaned (if possible). It sounds like it is not responding to the increased load of the alternator. A dirty throttle body or air...
Question
The car starts to stall when I accelerate at high speed.
I would first check to see if the PCM has set any diagnostic trouble codes, including pending codes. Codes can be downloaded and evaluated by YourMechanic in the context of a Check Engine Light diagnostic. The camshaft and crankshaft position...
Question
My car jerks when putting it into drive and sometimes has to be revved up high before going into gear
The issue you're describing is typically an indicator of an internal transmission component failure or loss of hydraulic pressure inside the transmission. The change of the motor and transmission mounts probably did not hurt the Honda's ability to accelerate correctly....
Question
Engine roar while braking/ stuttering while accelerating
Hi there. If the engine noise is happening only when the car is in forward gear, the issue might be caused by a damaged CV joint or the wheel bearings. However, if you're experiencing this sound while braking, it could...
Question
Car hesitates only on cold starts - 1997 Dodge Dakota
Hi there. In most cases, cold starting issues are commonly caused by low fuel pressure inside the fuel injector nozzles. When it gets cold, fuel that is inside the fuel lines tends to flow backwards, which causes hesitation and engine...
Question
VVT solenoid issue/problem recurring
Hello. Acceleration issues can be caused by many things. If you have already had the VVT solenoids replaced twice then it may be possible that the issue is related to something else, or that that the VVT issue has possibly...

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