Q: Car hard to get from 30 mph but after 40 is good.

asked by on

I don’t know if this has anything to do with the issue but it started when the car ran out of gas. Grabbed the gas tank out the garage. Been sitting for 6 months. Put it in the tank and after that the car started jerking. Once got speed it was good. Was in line dropping off my son had my foot on the brake let off and it wouldn’t go. Put it in Park then drive then it jerked a little then it let me drive. When it goes from 30 mph - 40 mph it hard to get to 40 mph but once it does it’s fine. Please help. Never jerked or had any problems before.

My car has 149235 miles.
My car has an automatic transmission.

Gas has a relatively limited shelf life and thus the fuel you added may have gone bad, that is the volatiles (the combustible components) had evaporated and there were some gummy solids due to fuel oxidizing. If the gas is bad enough, solids can plug up the fuel pump pick up screen and solids will easily plug the filter reducing the flow of fuel. If you desire, a certified mechanic from YourMechanic can install a new fuel filter and check out the rest of the fuel system and see if that resolves the problem. If not, a loss of power diagnostic would be the next step to identify the root cause of the problem. If you have further questions or concerns, do not hesitate to re-contact YourMechanic because we want you to make the most of your repair dollars and help you to get the best possible results.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Car hard to get from 30 mph but after 40 is good.

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

Get a quote

What others are asking

Q: Coolant leaking when I turn the AC on

Coolant leaks are generally noticeable with or without the AC on as the AC should not have any impact on the coolant system other than the fact that the engine works a bit harder when the AC is on. You...

Q: Can I provide my own starter

Yes, you are welcome to buy your own parts and book a certified mechanic from YourMechanic to install those parts or perform associated repairs. When reviewing your quote online, open the “price breakdown” tab, and click on “parts options.” From...

Q: How do I customize the Memory Remote Recall?

The Memory Remote Recall feature remembers the seat and side mirror settings that were last used by a driver, and returns to those settings when the remote keyless entry (RKE) transmitter is used to unlock the vehicle. To turn the...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...