Q: 2004 Hyundai Sonata jerks while accelerating from stop.
2004 Hyundai Sonata jerks while accelerating from stop. Doesn't happen when i put it in slap shift on 2nd gear and higher. As I am accelerating I get to 1000 rpm it jerks, then to 1500 rpm it jerks, and then to 2000 rpm it jerks. After I hear it shift it stops. What is wrong?
My car has 111000 miles.
My car has an automatic transmission.
Recommended Services
| Mass Airflow Sensor Replacement | $188.36 - $786.53 | Get a Quote |
This may be related to a dirty or failing mass air flow sensor. The mass air flow sensor monitors the air intake as it enters the motor and relays this information to the ECU which then makes adjustments to create the perfect air/fuel mixture. When this is not working properly, this may cause an imbalanced load of air/fuel to be injected into the motor causing the jerking reaction you have experienced. I would recommend having a professional from YourMechanic come to your location to diagnose and inspect your car.
The statements expressed above are only for informational purposes and should be independently verified. Please see our
terms of service
for more details
Get an instant quote for your car
Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
What others are asking
Car not starting.
I would say the most common problem if you reversed the leads would be a blown fuse. If it's not that then you may have melted a wire or even fried the ECM. I would suggest getting a technician such...
Metal-on-metal sound from front of car
It sounds like the pads are grinding the rotorLook through the wheel. Take note of the brake pad thickness. See if there is approximately 2mm of pad surface remaining (about the thickness of a nickel). If possible look at the...
Car stalls after starting
The symptoms you have described have quite a few different causes (https://www.yourmechanic.com/article/what-causes-a-car-to-stall). Common causes of this could be the MAF sensor, torque converter locked up, fuel pump failing, ignition switch, or fuel injector failure. Not all of these will trigger...
My 98 Jaguar xj8l won't start, clicking noise
This could be caused by a few things on your 1998 Jaguar XJ8. A low battery charge can cause this. If the battery is good, then listen for where the noise is coming from. If you get a click from...
My Windshield delay wipers. 2012 Ford Explorer
Hi - there are 2 possible sources to this wiper shutoff (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-windshield-wiper-module) problem: is the delay mechanism itself - which is electronic - at fault, or the wiper "position" mechanism - which mechanically senses when the wiper arm returns to...
check engine light on, code p0016 and p0017 shown
Of course, after a repair be sure to erase the codes. If the same codes do return after erasure, then there is a continuing, unresolved problem. Diagnostic Trouble Code P0016 (https://www.yourmechanic.com/article/p0016-obd-ii-trouble-code-camshaft-position-a-camshaft-position-correlation-bank-1-by-jay-safford) and Diagnostic Trouble Code P0017 (https://www.yourmechanic.com/article/p0079-obd-ii-trouble-code-crankshaft-position-camshaft-position-correlation-bank-1-sensor-b-by-jay-safford) have multiple causes...
Should I change my rotors?
If your rotors do not have a good clean smooth surface for the new pads to ride on then the pads will not be able to seat properly. This can lead to vehicle pull to one side or lack of...
Car vibrates real hard while in park
Shaking or vibration (https://www.yourmechanic.com/services/engine-is-shaking-pulsating-or-vibrating-inspection) may be caused by many different things such as faulty spark plugs, poor fuel pressure or misfires. Other things such as a faulty idle air control valve (https://www.yourmechanic.com/services/idle-control-valve-replacement) may cause the engine idle to drop below...
Can my camshaft position sensor cause my stabilitrak to have issues?
Hi there. P0449 is a general OBD2 diagnostic trouble code indicating an issue with the EVAP vent control circuit, so it has nothing to do with exhaust. I would recommend reading this article (https://www.yourmechanic.com/article/p0449-obd-ii-trouble-code-evaporative-emission-control-system-vent-valve-solenoid-circuit-malfunction-by-spencer-clayton) to learn more about the causes...
Related articles
A Buyer’s Guide to the 2012 Hyundai Tucson
The The 2012 Hyundai Tucson is available in front wheel drive and all-wheel drive. It has a distinguish look that is both stylish and elegant For 2012, the Tucson was named the second best compact SUV available on the market,...
How Long Does a Speedometer Sensor Last?
While While a mechanical speedometer will use a speedometer cable attached to the driveshaft and transmission, that’s not the case with an electronic speedometer, such as is used in most modern vehicles. These use a speedometer sensor. It’s mounted to...
Hyundai Certified Pre-Owned (CPO) Car Program
If If you have been shopping for a used Hyundai vehicle, you may want to check out cars under their certified pre-owned program. Many manufacturers have a certified pre-owned (CPO) program, and each one is set up differently. Read on...
Browse other content
Services
Maintenance