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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
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
The engine turned off on me while I was driving.
Hi there. The first thing that I recommend doing is check for any codes that the engine may have stored. The ECM may have the engine management system shut down for an issue with the traction control system malfunctioning. Perform...
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
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
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
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...
Question
After replacing valve cover gaskets, car runs horrible, and throws 5 different codes.
Hi there. Look on the engine for any ground wires. There could have been a ground wire that was disconnected to remove the valve covers causing all of the codes to appear. A ground that is not hook up can...
Question
Qashqai has delayed response when taking off then after few seconds it has loads of power 2011 Nissan Qasqai
Hi there - your vehicle has a relatively small engine, which is also turbocharged - an "air pump" driven by the exhaust - to provide additional power on-demand. Turbocharged engine, especially smaller ones such as your, are subject to hesitation...
Question
Engine stumbles around 3000 RPM.
Hi there. The engine could be stumbling for the coil pack or distributor may not be functioning correctly. As the coil pack or distributor gets old, the parts tend to become weak and is not able to send an electrical...
Question
Dangerously pausing when trying to accelerate 2016 Volkswagon Jetta
Hi there - if you test-drove the same model (engine/transmission especially) before purchasing this car, is the performance the same or is this specific car slower? While VW is recovering from the diesel emissions (and performance) scandal, this did not...
Question
Massive hesitation between 1-2 shifting and nearly dies occassionally at stop.
Hi there. It seems that the EGR (Exhaust Gas Recirculation) Valve is stuck and not allowing the engine to run good causing the engine to hesitate, especially when shifting. Take the EGR off and clean it. Then put it back...
Question
Acceleration hesitation under low rpms
Hello, thank you for writing in. You are definitely thinking in the right direction. Keep in mind these sensors are typically monitored by the computer, so if they fail they can illuminate a warning light. You should take a look...
Question
Car tremble a short while sometimes when travelling in low speeds or changing from idle to drive at the traffic light.
Hi there. With the limited vehicle description, all I can mention is that the throttle pedal position sensor needs reprogrammed or replaced or the gas pedal cable is out of adjustment and need adjusted (carburetor cars). The throttle is out...
Question
Car hesitated and transmission engaged before acceleration
Some of the CX5s have been having severe transmission problems, which is exactly what it sounds like your's is experiencing. There have been a couple cases of complete failure, even with under 1000 miles on them. It's possible that it...
Question
My 1991 Chevy Silverado hesitates at times and stumbles at idle when taking off from a start
If your fuel pressure is low or you have sticking clogged injectors you may get the hesitation and stumble on acceleration but run good at cruise. Also if you have some carbon build up on the valves and throttle body...
Question
Car won't go into gear or it will slowly go into gear but hesitates to pull.
Whether you have a manual transmission or an automatic transmission, if the rpm's are going up and the vehicle is not moving, then the clutch on the manual or the clutches in the automatic are slipping causing the vehicle to...
Question
Car sluggish and jerky in only first gear
Among the possibilities are faults in the throttle position sensor, mass airflow sensor, vacuum leaks, a clogged fuel filter, defective EGR valve or control circuit, and worn out spark plugs and wires. A mechanic would simply investigate these possibilities sequentially...
Question
Engine occasionally cuts out while idling at a stoplight and occasionally hesitates and bucks upon acceleration.
There is a issue with the fuel delivery to your engine. It seems as the fuel pump may be failing. Check the fuel pressure on the fuel rail and see if there is at least 30 psi. If the fuel...

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