Skip the auto shop - Our mechanics make house calls

Q: The car is hard to start after sitting for an hour

asked by on

Hello. I have starting issues with my car that happen only when the car is not in motion for one or two hours. It takes the car up to 15 tries of engaging the ignition to start up. After that, the engine seems sluggish and makes a sputtering noise. There is also low idling at around 350 RPM on average. Once it didn't start at all after trying for more than ten times. The issue however, only occurs when the car sat for one or two hours and it doesn't depend on the outside temperature. Why is this happening? How can I fix this? I appreciate your help.

A: Hello. There are several different things t...

Hello. There are several different things that could be causing your starting issue. There could be a bad spot in your starter which would make the vehicle hard to start. You could have an intermittent fuel pump problem which would decrease the amount of fuel that gets to the engine during startup. It is also possible that that your coolant temperature sensor is faulty. If the coolant temperature sensor is not reading the engine temperature correctly, the engine control module will not be able to adjust the fuel/air mixture properly. Have a certified technician, like one from YourMechanic, inspect of all of these systems and components in order to pinpoint your problem.

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: Heater valve stuck.

The heater control valve is mounter under the hood on this vehicle. The valve should be closed when the temperature is set to cold for the rear a/c system. The recommendation would be to have a qualified mechanic check for...

Q: Cutting out stalling skips

That sounds like your truck has a misfire. I hope someone has used a scan tool to check for diagnostic trouble codes and followed up on those results. If the spark plugs have been checked/replaced (and same with spark plug...

Q: My car rough idles and stalls, but no check engine light.

This issue is normally caused by low fuel pressure or a faulty injector, but since you have just replaced the fuel pump, this may also be a sign of a failing idle air control (IAC) valve. This is a unit...

Related articles

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...
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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...