Car stalls when merging on the freeway.

Driving my vehicle for approximately 1 hour, merged on the freeway and car stalled and wouldn't start. Had it towed home. Next day it started fine and drove about 3 minutes and stalled again and wouldn't start. Changed camshaft position actuator, test drove car. Drove for about 3 minutes and died. Noticed every time it dies there is a giant puddle of oil underneath the engine. Does not leak until is stalls out. Oil seams to be coming from the oil pan gasket but I've never heard of a bad pan gasket causing a vehicle to stall. Is this possible? What else could it be?

My car has 9

Experienced mechanics share their insights in answering this question :
Hello there. Quite often multiple symptoms will pop up that might be a possible cause of a mechanical defect or problem. I think this is the case here. If you are leaking oil (as you’ve stated, a lot of oil), then it’s possible that the ECU is detecting an oil pressure problem and triggering a fail-safe in which to protect the motor for damage. It is also possible that these oil leaking issues are not related to your starting and running issue. The best way to resolve this issue is to simplify the diagnosis process and have a professional mechanic complete a car starts then stalls inspection.

How to Identify and Fix Common car Problems ?

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

The most common reasons a Pontiac G6 engine stalling are the fuel system, the air intake system, or the ignition system.
The most common reasons a Pontiac G6 is leaking oil are oil system component failure and leaking engine gaskets. Search our network of RepairPal Certified shops near you to speak with a technician about your issue. Oops! We got lost!
If the torque converter is broken, or if there is a low fluid level in the transmission, the converter will not do its job, and the car will be unable to maintain power at low speeds, which causes the engine to shut off. A defective TCS or torque converter solenoid can also cause this issue.
Fuel injectors may become dirty over time and not be able to provide as much fuel to the cylinder as is needed. Dirty fuel injectors may cause the engine to run lean which will in turn, cause hesitation when accelerating.
The most common sensor which can lead to your car stalling is the manifold absolute pressure sensor (MAP) or the mass air flow sensor (MAF). Most cars typically have one or the other.
Stalling most often occurs because of a problem with the air to fuel ratio inside of the vehicle`s engine. Leaky air intake tubes, a dirty air filter, or various other airflow issues can potentially disrupt the air to fuel ratio and cause the vehicle`s engine to stall.
Engine oil leaks are one of the most common causes of engine damage. They cause rapid deterioration of the engine and result in expensive repairs. Worse yet, engine oil leaks pose a safety threat. They may lead to the loss of control of the vehicle while driving.
A faulty crankshaft position sensor will be unable to identify the exact piston position, triggering an engine misfire. This causes your car to shut off while driving. A drop in performance, fuel efficiency, rough engine, etc., are some important symptoms of a damaged crankshaft position sensor.
The alternator helps to manage the supply of electricity by recharging the battery. When there is a bad alternator, your car will shut off while driving. This primarily happens as it affects the power supply. Alternator issues will make the engine lose power.
There are several causes for your car to lose power significantly while accelerating. The most typical causes of a car not accelerating while driving include a faulty sensor, contaminated fuel or air filters, or a faulty timing belt.
Many modern vehicles are designed with several fail-safes to help protect the engine in adverse conditions. One of this is an automatic shutoff when the oil pressure drops to a certain level, or the oil level drops too low (note that this is not true for all cars). This causes the engine to stall and die.
When your cooling system fails, your car`s ECU will eventually force the engine to stall once it reaches a certain temperature to prevent serious damage. There are a number of reasons why your engine might be overheating, including a coolant leak, a faulty water pump or a blocked radiator.
A: The most common cause of a car`s engine stalling is a problem with the air-to-fuel ratio inside the engine. However, this issue most commonly causes low-speed engine stalls. When a car stalls at high speed, the most probable cause is an issue with the vehicle`s charging or ignition systems.
Immediately turn on the vehicle`s hazard warning lights. They`re the universal sign of distress. If you`re unable to pull completely over onto the shoulder, or if the car is stalled in a traffic lane, do not attempt to get out of the car! Similarly, never try to cross a highway on foot.
Faulty spark plugs can cause the car to exhibit starting troubles. Worn out plugs does not produce sufficient sparks, which is needed for starting the engine. This results in the engine to stall and fail to start quickly.
The gasket is probably the most common cause of oil leaks, especially in older vehicles or vehicles that are used frequently & have a high number of miles. The gasket is a seal that joins the head two metal parts of the engine, such as the between the block and the head(s) as well as the engine block and the oil pan.
What if you just add more oil to replace what leaks out? Though this might protect parts from wear, it won`t fix the problem. If anything, the leak will likely get worse over time. That means you`ll have to continually buy more and more oil, while making more and more of a mess everywhere you go.
Q: Can I still drive with an oil leak? A: It`s always advisable not to drive if your vehicle has an oil leak, but short distance drives, less than 10 miles, are not as risky when it comes to lowering your oil levels to a dangerous point.
Can you drive your car with an oil leak? Technically, yes, you can drive a car that`s leaking oil. However, it`s not a good idea considering the oil is what keeps the engine lubricated and running in top shape. Without it, your car`s engine will seize and leave you with a hefty repair bill for a new engine.
Will a bad O2 sensor cause rough idle and loss of engine power? You bet. Moreover, you may also notice poor acceleration, engine misfires, and even stalling. Bad oxygen sensors disrupt all kinds of essential engine functions, including engine timing, combustion intervals, and air-fuel ratio.
Electrical Sensor Issue

Usually, the warning is one of your dashboard lights accompanied by a bell. If any of these sensors or the main computer chip malfunction, your vehicle will stall.

Key Takeaway With proper care and following a regular maintenance schedule, your Pontiac G6 can last up to 270,000 miles and upwards of 15 years.
The most likely issue is a clogged fuel filter. The purpose of the fuel filter is to ensure that dirt and debris stay out of the fuel system, so over time, it may need cleaned or replaced. When the fuel filter is clogged, the fuel pump has to work much harder, resulting in a far less efficient drive.
Symptoms of low oil include your engine feeling sluggish. It may suffer from poor acceleration and you could find yourself sitting behind the wheel wondering what those knocking and ticking noises might be?

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Could this cause ur car to stall in warmer weather? My car never stalls during winter months. But from spring on its a neverendin
ANSWER : You should have the check engine light and engine scanned to see if the engine may be running lean due to low fuel pressures or clogged injectors. You should also have the mass airflow sensor cleaned and checked for proper readings and replace if not within specifications. The vehicle runs richer in colder weather and may be the reason for not stalling. You should clean injectors, clean throttle body and idle control valve then clean mass air sensor and relearn idle.

Car stalls when merging on the freeway.
ANSWER : Hello there. Quite often multiple symptoms will pop up that might be a possible cause of a mechanical defect or problem. I think this is the case here. If you are leaking oil (as you’ve stated, a lot of oil), then it’s possible that the ECU is detecting an oil pressure problem and triggering a fail-safe in which to protect the motor for damage. It is also possible that these oil leaking issues are not related to your starting and running issue. The best way to resolve this issue is to simplify the diagnosis process and have a professional mechanic complete a car starts then stalls inspection.

Replaced alternator on car 2 times each time shows it’s charging 14v let car run for a little bit then test drive and car voltage
ANSWER : There are reports that the replacement alternators will not communicate with the engine computer and will not charge correctly. I recommend using only the manufacturer approved replacement part. It can be new or remanufactured but approved for use in the vehicle. Some lower cost alternators on the aftermarket will have charging problems since they will not communicate with the ECM on the vehicle and will stop charging.

I put the wrong key in my car and a few weeks later my car just shut down and it will not start I believe it’s the computer but…
ANSWER : Hi there. What had happened is the wrong key set the security to the vehicle. This is to prevent the vehicle from starting with the wrong keys. Try removing the battery cables (+) and (-) for 13 minutes. During that time, put the original key in the ignition and turn it on. Activate everything in the car even though there is no power. Then remove the key and hook up the battery cables. The computer should have reset and reset the security. If the security is still being tripped, then I recommend seeking out a professional, such as one from Your Mechanic, to help you

Car keeps stalling car, I think it’s the fuel pump
ANSWER : Hello – I applaud your diagnostic skills! You have certainly identified a classic failure mode of a fuel pump with extended mileage such as yours. Your fuel pump is located in the tank and is cooled by the gasoline there. With a half tank (or less) of gas, the fuel pump isn’t being cooled as well. A worn pump generates more heat and will stop working when it gets too hot. Well done! I would recommend having a professional mechanic, such as one from YourMechanic, replace your fuel pump to repair this problem.

The engine stalls when I put the car in reverse, but if I go past reverse into drive there is not an issue.
ANSWER : Hi there. Usually when you shift into reverse and engage the brake it will cause the engine RPM to drop; as it’s creating a load against the transmission and the engine. If the engine stalls, it may be caused by a faulty idle control valve, bad O2 sensors, or clogged fuel injectors.

In regards to the "pan", we’re not sure what you are referring, so it may be a good idea to contact one of our local professional mechanics to complete a battery inspection to determine what’s going on with your 2010 Ford Focus.

My car will not start Intermittently. I purchased a new battery 2 weeks ago and yesterday the car wouldn’t start. Got a jump and
ANSWER : The issue you are having is probably due to an intermittent fault in the starter motor itself or a deficiency in the starter electrical circuit, for example a large voltage drop due to a poor ground or a high resistance connection. These issues can be readily diagnosed and resolved on a mobile basis if you request a hard starting diagnostic. If you request that diagnostic, the responding certified mechanic will get this resolved for you promptly. Based on Toyota’s Factory Service Manual, the battery should not be disconnected if the vehicle engine is running. The battery acts as a large resistive voltage sink and consequently taking the battery out of the circuit, while the alternator is still running, can create a voltage spike on the car’s electrical system which is not good for voltage sensitive components such as the engine computer. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Power steering loss, no belts are turning but the car is running fine. I also have a soft pedal. Whats wrong with my car?
ANSWER : I have only seen this situation once in my 30+ years and it turned out to be a broken crankshaft pulley. Belts are driven by the engine. The crankshaft pulley spins the belts, which in turn spin the air conditioner compressor, power steering and water pumps, and the alternator. The vehicle should be towed to your local repair shop and not driven. Without the water pump spinning to circulate the coolant, the engine will quickly overheat and result in more extensive damage.