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

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: Axle dragging on ground.

There are several components to the rear axle assembly on your vehicle. The GS300 has a drive shaft, a CV axle, and a rear hub bearing assembly. I am guessing your issue is either with the CV axle or the...

Q: Knocking after turning left seems to go away when straightening up 2004 Peugeot 407

Hello - great diagnostic effort! You isolated the problem area from the symptoms nicely. I believe your outer, left side Constant Velocity joint is failing. It has to deal with the most angle when turning left, and applying power thru...

Q: Car dies immediately I take my foot off the gas

Does your car stall when you take your foot off the gas, or does it idle too high? You state both. Either way the most common problems are: Idle control valve is stuck or is sticking Intake gaskets...

Related articles

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...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...