Skip the auto shop - Our mechanics make house calls

Q: The car won't start unless it sits for over four hours

asked by on

In the last several months, my car has been having troubles starting up. But, it happens in particular situations. If I start up the car after it sat for four hours or more, everything's fine. However, if I start it after it sat for a shorter period of time, say an hour and a half, or 40 minutes, then it cannot be started. When it happens, I have to let it cool down for several hours more in order to get it running again. I've been to the mechanic's and I had so many things done, including the battery replacement, cleaning the wires, replacing the fuel pump, checking for any electrical issues, checking the parts under the hood, filling in fuel. The issue remained the same. The dash shows no lights on either. Any ideas?

Hello there. A few possible faults could cause this type of intermittent no start condition. The most common would be a battery, starter, battery cables, fuel pump, fuel injector, or a wiring issue. This type of failure indicates a fault that only occurs once the vehicle is hot and can be difficult at times to duplicate. To verify what is causing the problem, a qualified technician, such as one from YourMechanic, will be able to diagnose the starting issue and perform any repairs required.

Was this answer helpful?

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
  1. Home
  2. Questions
  3. The car won't start unless it sits for over four hours

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: Service theft deterrent system light is on. Absolutely no dinging when key is in . it will not even attempt to crank

Hi. When the wrong key was put in the ignition it damaged the components inside the ignition causing it to shut the car down. The only way to fix this problem is to replace the ignition and have the new...

Q: Backfiring and sluggish

It sounds like you may have a misfire or a timing problem causing the motor to backfire. Engine misfires can be caused by many different problems and are generally caused by either a spark or fuel issue or in some...

Q: How can I prove my car dealer's service department broke the CD in my Hyundai Santa Fe?

Hi there. Unfortunately, there is really no way of proving when damage was done to an electrical, accessory component. This happens more often than not when work is being done behind the dashboard or when removing dash components is needed...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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.