Q: My car cranks but won't start. I can hear it trying to start and then there is a single thump noise.

asked by on

My car will crank but not start. I can hear it trying to start and then there is a single loud thump from under the hood. I drove the car okay last night but it wouldn't start this afternoon. Also, I didnt drive the car over the new years weekend. After sitting for three days i did have a hard time starting it but it started after I stepped on the gas a few times. If I run errands, the car seems hesitant to start if it sits for less than half an hour but it had been starting until today. The battery is working (radio and lights work) and I have a 3/4 tank of gas.

My car has 195000 miles.
My car has an automatic transmission.

There are many causes of hard starting but illustrative ones are a faulty engine coolant temperature switch (sensor), worn spark plugs, inadequate fuel delivery or pressure (e.g., clogged fuel filter), dirty fuel injectors, contaminated or old gasoline, malfunctioning idle air control valve, poor engine compression, and so forth. You can identify the specific cause of the issue that you are writing in about by requesting a hard starting diagnostic and the responding certified mechanic will get this resolved for you, right at your location. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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. My car cranks but won't start. I can hear it trying to start and then there is a single thump noise.

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: Q: My '98 expedition, it drives fine for a while, then after a few hours, when sitting still, it idles rough then shuts off.

After some testing done to verify the EGR valve flow to see if the valve is intermittently sticking open causing the stall. This can be done using a scanner with the capability to open and close the EGR valve and...

Q: Q: Door not closing.

Ford actually issued a recall regarding faulty door latches. I suggest calling your local Ford dealer with the VIN of your vehicle to see if it is covered. If not, a trained mechanic, like one from YourMechanic, can install a...

Q: Brand new clutch installed and on the way home it grinds while shifting into 3rd and it never did that before.

Hello. I share your dismay. When a clutch is replaced it does not implicate any of the internal gearing of the transmission. Although it would seem improbable (because you are not experiencing grinding in gears other than 3rd) you might...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
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.