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hesitation

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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
truck hesitates at 30 miles an hour what could be wrong. Could it be the timing chain
Hello and thank you for contacting YourMechanic. Sounds like you have a fuel filter plug issue and a throttle position sensor issue making the engine starve for fuel and preventing the engine from accelerating (possibly in limp mode). Check the...
Question
Cold engine misfire and hesitation - 1997 Dodge Dakota
Hi. I believe the ambient air temperature sensor, which measures the intake air temperature for engine management, has failed. It is reporting a far higher temperature than the engine is getting, as you have noted. Engine management is creating a...
Question
Why does my car sputter when restarting after driving for a while?
Hello. From what you describe it sounds like your vehicle may be stuttering and hesitating when you first start the vehicle. This can be caused by many things. A few common causes are issues with the ignition, engine management, or...
Question
Engine hesitates when warm - 1997 Toyota Tercel
Hi there. As you already know, replacing components without diagnoses can be expensive and time consuming without resolution. A few things come to mind concerning the lack of performance. First, camshaft timing needs to be checked. When the engine is...
Question
Accelerating and idle problems
This is a common 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...
Question
I have a 2003 Cadillac CTS. My engine hesitates then shuts off
Hi there: Usually when the vehicle has issues cranking over, it's not related to the serpentine belt or an ancillary drive belt. In most cases, this is a battery cranking amp issue or an ignition system issue. On the Cadillac...
Question
I am going to replace my fuel pump and I need advice
Diagnosing a hesitant engine will take some testing and the process of elimination. Being 10 years old, the vehicle is likely due for some work, and you should keep any recent repairs in mind while looking into this. Considering the...
Question
Recently my car started to hesitate when I accelerate from a complete stop.
Hello. There are several problems which could affect poor idle and low speed running. Starting with the misfire indicated by Check Engine codes, bad spark plug coils, especially with your mileage. Check also for oil leaking from the valve cover...
Question
My car is slow to accelerate, and it stalls in drive and reverse
This may be related to 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...
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
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
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...

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