Q: Q: My car ran hot and now it won't start

asked by on

Car ran hot now it want start up was running great when it ran hot I cut it off I added water now it want crank up

My car has 11400 miles.
My car's transmission is unknown to me.

Hi there. An overheated engine is not a good thing. A severely overheated engine could mean catastrophic damage has occurred. Assuming the engine does not turn over, this would lead me to believe the engine has seized or the head gasket has blown. Adding cold water to a hot engine could have facilitated a head gasket failure and now the engine is hydrostatically locked. If the engine does turn over would be encouraging.

Any number of electrical components could have failed due to high under hood temperatures. Accessing the vehicle ECM (engine control module)/computer for trouble codes may help direct the diagnoses. Possibly the CKP (crankshaft position sensor has failed. Replacing components without diagnoses could prove to be expensive and time consuming without resolution. I recommend having your vehicle’s no start be diagnosed and repaired by a certified technician, such as one from YourMechanic.

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. Q: My car ran hot and now it won't start

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: My car hesitated on started on first break when I tried to crank it by noon it did nothing.Ive replaced the alternator and starter

Hello there, no start issues are the most common issue with your 2004 Hyundai Santa Fe. You have done well in replacing the starter and alternator first as these are the most likely causes in many cases. If the battery...

Q: Loud grinding noise coming from engine

Hello. If there is a loud noise like that coming from the engine accompanied by a misfire and fuel from the exhaust, then you may have a valve timing problem. It may be a failure in the timing chain. I...

Q: Car overheated and now it's shutting off. It cranks but won't start.

Hi there. If the coolant leaks out too much, the computer will see this from the coolant temperature and coolant level sensors and shut off the engine to prevent any damage to the engine. Check for the coolant leaks and...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
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.