Q: Car shuts off when the weather is hot

asked by on

My car seems to be shutting off every time it gets hot outside.The dashboard is now showing the check engine light on. There is also the code indicating the cam sensor issue. During the cold months, there are no issues whatsoever. But when I went on a longer trip about a year ago when it was really hot, the car shut down on me several times. I restarted it each time and it immediately started up, but soon shut off again. I had the fuel pump replaced. The fuel filter is new as well as the coolant valve. Other than that, when I remove the gas cap, there is usually no air release. Also, when I fill the gas tank at the station, it won't fill it properly, as it reports as being full. What could be causing these issues?

Hello. A bad cam position sensor will cause a Check Engine Light to come on and possibly cause a stall or no start condition for your 2000 Mercury Mystique. Cam position sensors usually develop their problems when hot, so this is likely why you don’t experience any issues during the colder months. The gas tank not filling up properly could be due to a clogged EVAP system. A clogged EVAP system can also cause a Check Engine Light. I suggest that you have a technician inspect the EVAP system of the gas tank for clogging, as well as check other systems, in order to diagnose your stalling issue. Also, have the technician retrieve codes for the Check Engine Light and monitor the live data of the EVAP system and cam position sensor.

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. Car shuts off when the weather is hot

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: Replaced throttle gasket, fuel pump, throttle body, & inertia switch

Hey thanks for writing in about your 2005 Jaguar XJ8. All the problems you've had is common with these vehicles as they age. You should not have any more than normal repairs with this vehicle. The fuel pump replacement should...

Q: I had the code po342

You will need to make sure the CMP sensor wires are not out of position and near any high voltage wires or coils. If the problem continues then remove the sensor again and check the reluctor on the cam for...

Q: How to install or replace the shift shaft cable and linkage

The only way to see how to install one is to see if there is a video online or watch a mechanic do the work. The shift cable does not go bad very often on these vehicles. The most common...

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...
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.