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.

A: Hello. If the car will not start when it is...

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

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・Save up to 30%

Get a quote

What others are asking

Q: i replace radiator and now my coolant resivor starts boiling and i over heat

When you put in the stop leak, you may have blocked some passages and the thermostat. I would remove the thermostat and the lower radiator hose, then run clean water from a hose through the engine and radiator to flush...

Q: Everything turns on, but when I turn my key, the car won't turn on

Hi there. There are a few things that instantly come to mind that could be causing your starting issues. If you can activate all of your accessories but nothing happens when you turn the key forward, the cause is most...

Q: My car won't start and the check engine light and check oil lights are on

The clicking sound can occur when there is not enough battery power getting to the starter to crank the engine. If the cables were corroded, then the battery may be sulfated and need to be replaced. A simple battery check...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.