Skip the auto shop - Our mechanics make house calls

Q: Car not starting when it is warm

asked by on

The car will not start when it is warm. It will only start after sitting for 20 minutes or more. I am getting no error codes. I think it might be the cam sensor, and I have the parts for that.

A: The cam sensor may be causing the problem b...

The cam sensor may be causing the problem but it should be setting a code when it does not start. The engine needs to be scanned when the no start is happening to see if you are getting a cam signal. A pressure check would show if you have a fuel system pump that is not giving pressure till the engine cools. Sometimes no codes are set if the engine control relay or ignition system is malfunctioning. I recommend having a mechanic, like ones from YourMechanic, come and diagnose why your car is not starting.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Looking to upgrade header.

Hello. Typically having water in the headers is not a good sign. If the vehicle is not driven much then condensation can build up in them from short periods of running the engine. If the vehicle is driven often and...

Q: Grinding noise when starting up.

The grinding that happens when you accelerate may be related to the lower control arm bushings which are known to commonly cause this type of grinding noise on acceleration. As to the grinding noise upon start up, have the noise...

Q: What is the torque required for a inner tie rod?

Hi there. The inner part of the tie rod (differential-to-drive axle flange nut) is torqued between 40 to 47 foot pounds. The outer part of the tie rod (tie rod end nut) is torqued between 31 to 42 foot pounds....

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
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.