Q: Car seems like it is slower to start when engine is warm

asked by on

I recently noticed that when I am out during the day and I am running errands, or driving my car for a while, and then getting back in soon after, the vehicle sounds like it is having trouble starting and is a bit slower to start. If I start the vehicle after it has been sitting for awhile it starts up with no problem and I only notice the vehicle sounds a bit labored when the engine is warm. I just recently got my starter replaced to see if that might be the cause and to fix another issue, but unfortunately it is still sounding slow to start. It still always starts on the first try, but just sounds a bit labored when the engine is warm. Could it be my battery?

My car has 90300 miles.
My car has an automatic transmission.

Hello, thank you for writing in. The vehicle may be having issues with the electrical connections to the starter or battery. There are several different ways to go about testing for this. The first thing to do is inspect all of the connections from the battery to the starter and the ground connection. Often heat will cause these electrical connections to get warm and it will cause more resistance in the system. The more resistance, the less voltage available for the component needing it. When it comes to the starter, if this is the cause, the starter will not turn as quickly and cause the engine to struggle while starting. The same will happen to the fuel delivery system, and you may want to turn your attention to the injectors and spark plugs if the starting system checks out. Only further diagnostics will tell.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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!
  1. Home
  2. Questions
  3. Car seems like it is slower to start when engine is warm

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: I have a 2012 Dodge Charger R/T AWD and I have check engine light issues

Hello, thank you for writing in. The long list of potential issues that cause hard-starts and misfires is profound. Without knowing exactly what diagnostic codes the dealership was pulling from the check engine light, it is impossible to narrow down...

Q: Drove over a Traffic Cone

Traffic cones are quite heavy and strong. So is the underside of your car, but there some rubber and plastic parts that can be damaged. Even if all seems normal with the car, it wouldn't hurt to have a local...

Q: Weird noise coming from the A/C.

This may be a sign of a faulty blower motor. As you might know, these have electric motors in them that wear out over time and will begin to make squeaking or grinding noises as the bearings begin to wear...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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...