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?

A: Hello there. A few possible faults could ca...

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Ford Ka clutch feels high - just need some advice! 2006 Ford Ka

Hello - the behavior you describe suggest that the clutch disc is fairly worn. Since it takes less clutch pedal motion to "unclamp" the disk indicates the there is less clutch disc thickness, less pressure place movement and less clutch...

Q: Car won't start, 2012 Kia Rio

Hi there, thanks for writing in about your 2012 Kia Rio. If you only hear clicking, then you should have the starter checked to see if it is getting power. Replace the starter if there is power when you try...

Q: Dashboard lights stay on engine cut itself off .lowjack

It's difficult to say for certain, but I would be very suspicious of any accessories that are wired into the system. Your car has about a half dozen or more modules controlling everything from engine and transmission functions to brakes,...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...