Skip the auto shop - Our mechanics make house calls

Q: Starting problem on hot days

asked by on

If it's a hot day and when the car has been running up to temperature, it will not start unless it's cooled down for awhile. Battery is new, alternator is fine.
My car has an automatic transmission.

Hello. If the car will not start when it is hot then it can be caused by a few things. If the engine will not crank when this occurs it is typically caused by a failing starter. This is a common issue. If the engine cranks and it will not start then it may be a bad shut down relay or a fuel pump relay. It can also be an ignition switch when this occurs.

I usually start by checking to see if the fuel pump is coming on and also checking the power at the fuse box to see what the vehicle is lacking. If you need to have this looked at, consider getting help from a certified mechanic who can come to your home or office to diagnose this starting issue.

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. Starting problem on hot days

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: RPM needle moves up and down and then car shuts off when starting it. This happens intermittent. Runs good some days, others no.

Hello, thank you for writing in. With all of the various codes and systems being effected, you may be experiencing a vacuum leak. While everything the dealership did was understandable to some extent, a vacuum leak test needs to be...

Q: Transmission not shifting properly

What you are describing is often a sign of low transmission fluid or a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car's computer...

Q: Power steering tank is leaking

Hi there. No, the power steering rack usually does not require replacement if the tank is leaking. If the rack is leaking, then yes. However, the tank and pump may need to be replaced as the whine noise occurs when...

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...
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.