Skip the auto shop - Our mechanics make house calls

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?

A: Hello. A bad cam position sensor will cause...

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?

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: Possible timing chain replacement.

The code P0015 could be coming up for the following issues. ____________________________ The camshaft(s) have incorrect timing intake timing control valve control solenoid system has wiring problems Continuous oil flow to the VCT piston chamber The timing valve control...

Q: Gear shift locked up

Does the shifter move out of park? If the shifter moves but the car does not come out of park something has broken in your shifter. If you can not move the shifter out of park there is a problem...

Q: The Check Engine light is on, along with the VSA light and the accelerator is also not working

In order to find out what is causing the check engine light to come on you will need to have the system scanned for codes and the codes pinpoint tests performed to find the cause of your problem. There are...

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...
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...
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...