Land rover over heating and check engine light flashing

It started with my check engine light flashing. Then my car started to shake, very lightly. The heater was blowing out cool air, no matter what. Finally, my car over heated. I would pull over and shut of the engine for 2 seconds, and the needle would go from at the red section, back to the middle. Haven't noticed any major leaks, though I think I may need an oil change. We tried to open the coolant reservoir, but it was hissing and bubble when we started to unscrew the cap, so we just didn't mess with it. What does it sound like the problem is? Helppp.

My car has 134000 miles.
M

Experienced mechanics share their insights in answering this question :
This is a result of your engine overheating which may be caused by a faulty thermostat. When this is stuck closed, this does not allow the coolant to flow through the motor properly. This may also cause the coolant to not circulate through the heater core which is what causes the heater to blow cold air. As the warm coolant circulates through the heater core, the heater blower motor blows the warm air through the vents inside the cab of the vehicle. When the coolant is not being circulated properly, the blower motor has no way of creating warm air to blow through the vents. I would recommend having an expert from YourMechanic come to your location to diagnose your cooling system.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

If the check engine light in your Land Rover Discovery starts flashing, that means that the problem needs prompt attention and your Land Rover should be brought in promptly. A flashing light indicates that the problem is dangerous and if not taken care of promptly may result in good damage to the vehicle.
This may be due to a poor wiring connection, or a failing sensor. P1167 is telling you that the issue is electrical and most likely not a symptom of the vehicle`s engine malfunctioning. At this point, you will want to double check the connection to the sensor and make sure it is clean, dry, and tight.
Hello, as hard as it may be to believe, flushing your cooling system or heater core has absolutely no bearing on the check engine light flashing. The check engine light flashing is due to an engine performance concern that causes cylinder misfire of the engine.
If the check engine light in your Land Rover Range Rover starts flashing, that means that the problem needs sudden attention and your Land Rover should be brought in quickly. This blinking light usually indicates a severe engine misfire allowing unburned fuel to be dumped into the exhaust system.
While the check engine light can definitely be indicative of serious problems, the most common cause of the flashing is usually an engine misfire. There are many reasons why an engine misfire might be occurring. To run smoothly, an engine must be receiving the correct amount of power from the cylinders in your vehicle.
A flashing CEL indicates a severe problem, one that requires immediate car repair. In other words, if your check engine light is flashing, pull over and call a tow service. Continuing to drive your car with a flashing CEL can cause irreversible damage to internal components.
Your check engine light is on: If the engine`s computer detects a problem with the coolant temperature sensor, or its circuit, it will turn on the check engine light.
Check your gas cap first. Many vehicles have a loose gas cap indicator that will be triggered before your check engine light comes on. If your gas cap is loose or the seal is not tight, the vapor leakage can cause your fuel system to trigger the check engine light.
Key signs to look out for:

Weak or no airflow. Cold air (not warm) coming through the vents when the heater is on. Coolant leakage visible inside the cabin or a damp smell.

If your check engine light is flashing, something is wrong with your engine. You need to pull over and shut it off as soon as it`s safe to do so. The check engine light flashing when accelerating combined with white exhaust appearing and disappearing suggests a sticking fuel injector.
emergency. Warning lights are a suitable means of monitoring the status of your vehicle`s engine. It is only necessary to check your engine when a warning light is flashing.

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