Q: My car has trouble starting when the engine is hot, I never have a problem in the morning or when I get off work.

asked by on

I thought it was the battery but I changed it and I'm still having the same problem. I'm not sure what it could be that is being affected from the hot engine.

Hi there. It sounds like the ignition coils are getting hot and when the engine is shut off, the engine will not restart due to an ignition coil that will not produce a spark. Remove one spark plug wire at a time and check for spark on the engine with a spark tester tool. If the tool is adjusted to 30 thousandths and the spark starts jumping around, then the coil would need replaced. If the spark is good, then I recommend replacing the spark plugs and wires. If you need further assistance with your engine not starting when hot, then seek out a professional, such as one from Your Mechanic, to help you.

Was this answer helpful?
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. My car has trouble starting when the engine is hot, I never have a problem in the morning or when I get off work.

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 took my car to a shop to fix my thermostat and water pump, now my car won't accelerate fast past 3000 rpm ? 2012 Dodge Charger

Hi - your symptoms suggest a problem with the throttle position sensor. This component is falsely limiting throttle position and power demand to the engine computer. I recommend a loss of power inspection performed by a mobile, professional mechanic, such...

Q: Q: Misfire on cylinder 8

It could be the spark plug, ignition coil, or coil boot causing the misfire. You may also have dirty fuel injectors that need to be cleaned. Have the ECM scanned to see if the misfire code is P0308. This code...

Q: My car turned off when I was pulling out off a parking lot

Claimed by Kevin Gainer

Related articles

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...
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...
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.