Q: My car jerks at 45-50 mph during acceleration, and then it smooths out.
During acceleration between 45 and 50 mph my car jerks until it gets past 55 mph then it smooth out.
My car has 121000 miles.
My car has an automatic transmission.
Recommended Services
| Car jerks forward at high speeds Inspection | $94.99 - $114.99 | Get a Quote |
| Mass Airflow Sensor Replacement | $188.36 - $786.53 | Get a Quote |
Hi There, The jerking reaction you are describing may indicate a dirty or failing mass air flow sensor which is a unit that monitors air intake and relays this info to the ECM which then makes adjustments to the fuel supply. This could also possibly be related to intermittent fuel pressure or an ignition problem. I would recommend having a professional from YourMechanic come to your location to diagnose and inspect your vehicle.
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
AC knocking when it is turned on
Hi there. It sounds to me as if your AC's fan is interfering with something in the track of its spinning. Also your issue can point to your AC compressor clutch not gripping the pulley correctly. I'd suggest having a...
Car not riding smoothly
Hello. It appears that you have a series of issues occurring. If the vehicle itself is not riding smoothly then it may have an issue with the struts. Due to the age of the vehicle the struts may no longer...
Vehicle turning off when driving
Hi. You could have several problems here. Check the battery for corroded connections by inspecting the battery clamps, and also looking to see if there is a white residue on the cable material near the clamp. If corrosion is present,...
Emergency brake line dragging on ground
It could be the emergency cable, or it could be a number of other things. If it is the cable, the bracket may be broken. I suggest having a trained technician to pinpoint the source of the noise (https://www.yourmechanic.com/services/car-is-making-a-noise-inspection) and see...
Make loud growling noise for couple days. Then died on highway yesterday. Wont start back up
In my opinion your water pump was making the noise. This is one of many possible scenarios. 160K is roughly the amount of miles that a factory water pump will fail (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-water-pump). It is driven by the timing belt. When...
I just had my transmission repaired this morning I have no power steering...is this related?
Your transmission does not have anything to do with the power steering system. Either of the two would not have any cause or effect on the other. This suggests your power steering pump may be failing or you have a...
01 Audi A6 2.7 have a crank but no start I checked my fuses and I have no power to either of my 2 ECU fuses or my Fuel Pump fuse
Hi there. It is highly probable that you have a faulty main relay or an exposed electrical connection or bad ground to the fuse panel that is causing this issue. However, it could also be problem with the ECU itself;...
I took my 04 GMC Envoy to better brakes for less as I needed to have it pass smog and the check engine light was on. They said I n
Inasmuch as YourMechanic is mobile, you need not bring the car anywhere as the certified mechanic will come to you and take care of the radiator replacement. If you desire mobile replacement, please simply use YourMechanic's radiator replacement service page...
Hello i have a high idle in the morning when it warms up acting like its going to die
This may be a sign of a vacuum leak. High idle speeds or in some cases rough idle, stalling and hissing sounds are common signs of a vacuum leak. When a vacuum leak is present in an engine, this causes...
Related articles
The Best Used Cars to Buy If You're an Undercover Cop
If If you're an undercover cop, when you choose a used vehicle, your main purpose is to look like anything but a cop. That means, of course, that an unmarked Crown Victoria is probably not the wisest choice. We’ve evaluated...
How Long Does a Low Water Sensor Last?
The The heat that is produced by your engine can be quite harmful if not cooled down. There are a variety of systems in your car that are designed to make sure that the internal temperature of your engine stays...
How to Replace a Yaw Rate Sensor
Yaw rate sensors monitor traction, stability, and the anti-lock braking system to alert you when the car tilts at an unsafe degree.
Browse other content
Maintenance
Services
Estimates