Skip the auto shop - Our mechanics make house calls

Q: Engine misfires and hesitates while accelerating

asked by on

Upon starting the car (always only once) it will misfire before kicking into gear. I can not accelerate before this occurs (I can rev the engine but it does not help). Also, when downshifting or after slowing down, the car will have a 5-10 second delay before full acceleration. It feels like a constant down shift is holding me back until it kicks into gear. Please note I have recently replaced my Max Airflow Sensor as the car's check engine light has been on since I got the vehicle (approx 2 years ago) due to an aftermarket air intake damaging the sensor. I also replaced the intake with a newer K&N model but it is not the standard intake made for the vehicle. The check engine light is now off, but these problems did not occur until the replacements were made.

My car has 80000 miles.
My car has a manual transmission.

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Slow acceleration

Thanks for writing in about the acceleration issue with your 2007 Volvo S60. At first glance, I'd agree with you that the problem would be caused by the MAF sensor, as that's what commonly causes the slow acceleration issues and...

Q: Engine Noise at all revs- especially while accelerating/revving higher.

Hey there, thanks for writing in. An initial and particular concern would be if you have an exhaust manifold leak. If so, that needs to be checked out and repaired immediately due to the hazard of carbon monoxide. Beyond that,...

Q: Bad 5th cylinder - misfiring?

It is unlikely that your motor needs a valve job or piston work judging by the amount of miles, absent some kind of catastrophic failure inside your motor. Often times, engines will have misfires for a wide variety of reasons...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.