My car will not start.

While driving on the highway, my car acceleration started to decrease the speed and when I pressed on the gas it would make a clicking noise. I pulled my car over and stopped the whole car. Once I decided to start my car again it felt like it was going to start but it would never turn over. I thought I needed gas but that wasn't the problem. I got my battery and alternator checked at a local parts store and they both passed. Once I got my car towed home I tried to start it again and it was making the same noise when I would pressed on the gas. The sounds weee coming from the starter. Does
Experienced mechanics share their insights in answering this question :
Hi there:

If you’re hearing a noise coming from the engine when you press the throttle, it’s more likely an issue with the throttle cable, throttle control module or the throttle body that is causing the stalling and no starting problems. I wouldn’t assume to think it’s the starter, especially if your engine can crank over but simply won’t start. To know for certain what’s causing this issue you should have a mobile mechanic complete a car is hard to start inspection first.

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 Ford Taurus won`t start are a dead battery, an alternator problem, or failed starter. Search our network of RepairPal Certified shops near you to speak with a technician about your issue.
Bad Sensors

One common culprit for this problem is the crankshaft position sensor, which measures the position and speed of the crankshaft. The computer uses the information from this sensor to know when to fire the spark plugs. If the sensor isn`t working, the spark plugs won`t fire, keeping the engine from starting.

Connected to the battery is the alternator, which works to generate power for your vehicle`s electrical components. When you have a brand-new battery but still can`t start the car, the alternator might be the issue. Cold and damp climates may increase wear on an alternator, causing it to fail.
If your vehicle won`t start, it`s usually caused by a dying or dead battery, loose or corroded connection cables, a bad alternator or an issue with the starter. It can be hard to determine if you`re dealing with a battery or an alternator problem. Here`s how to know which one is the culprit.
When your engine cranks but won`t start or run, it could mean your engine is having trouble producing a spark, getting fuel, or creating compression. The most common causes are problems in the ignition (for example, a bad ignition coil) or fuel system (for example, a clogged fuel filter).
It could be a problem with the starter itself—such as a loose connecting wire or blown fuse—or it could be that a component in the system has worn out or needs replacing, such as the solenoid. In either case, if the starter is to blame, you`ll want to replace the part to correct the issue.
Yes, you can drive with a bad oxygen sensor if you can still start your engine and feel little difficulty driving. But don`t leave it alone for over a couple of days, as it might cause safety problems and lead to the malfunction of other parts of your vehicle.
If you are having trouble starting your car or getting the engine to turn over, the air-fuel mixture might be off balance. All vehicles are very sensitive to proper air-fuel mixture and may have difficulty starting if it is thrown off by a bad mass air flow sensor.
If your car won`t start, but your battery is fine, chances are you have a bad alternator. This is another charging system issue, like a dead battery, that won`t let you start your car.
The battery can be fully charged but still not be able to start the vehicle if it is failing or has a dead cell. Other likely issues are the fuel pump, ignition switch, battery cables, starter, or a clogged fuel filter.
Use a portable jump starter or use another car to jumpstart your vehicle. Either with a portable jump starter or with a jumper cable connected to another car. It`s pretty easy to jumpstart your vehicle. All you have to do is connect to identify the ignition coil and the battery.
If you found oil has entered the spark plug tube galley then the oil may have shorted out all the coils and plug wires causing the engine no start.
Your vehicle`s on-board diagnostic system is usually able to detect when one of the sensors is failing. This will result in your dashboard`s “Check Engine” light coming on. Many motorists simply ignore the “Check Engine” light and continue to drive since the vehicle keeps running.
The first sensor you should check when your car doesn`t start is the crankshaft position sensor (CPS). This sensor is used to monitor the angle or the position of the crankshaft so that ECM can initiate the ignition firing for proper combustion. With a bad crankshaft sensor, your car may not start at all.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

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.

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car hesitates when trying to start the car ,but when started then i shut car off and start again it will start right up
ANSWER : Hi there:

Sometimes when you have problems starting an engine initially it is caused by a restriction in fuel flow; caused either by clogged fuel injectors or the throttle body that needs to be cleaned. Once the fuel starts to flow and engine warms up, it’s much easier to start. However, it could also be an air filter, EGR valve or other components that causes this issue as well, which is why it’s best to have a professional mobile mechanic complete a car is hard to start inspection so they can pinpoint the source of this issue.

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Map sensor car won’t start up good ?
ANSWER : Your MAP sensor is an important input for your computer. It helps determine the load on the engine to calculate the correct amount of fuel to inject. It sometimes takes a few seconds for the vehicle to realize that the sensor is not producing a good signal.

At that point, it will use other methods to determine the fuel rate, such as pre-programmed fuel maps, throttle position, etc. I would suggest replacing the MAP sensor and retesting. If you would like to have it checked first, a certified technician from YourMechanic will be able to scan your vehicle and test components to determine the root cause of your starting issue before making a repair.

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Charging warning light comes on when i turn the key and try to start the car and the car want start but when someone tried to give
ANSWER : Hi there:

If you recently replaced your battery, the issue may be caused by a malfunctioning alternator or other electrical component that comprises the charging system on your Nissan Sentra. The best way to find out which item specifically is faulty, is to have a professional mobile mechanic complete a car is hard to start inspection. This will allow the mechanic to determine the precise source of what’s going on with your Sentra and recommend or complete the right repairs.

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My car will be starting perfect and when the gas tank gets lower it will start having problems .
ANSWER : Based on the information you gave, it sounds like a possible fuel starvation issue, caused by a partially blocked, in-tank fuel filter or a crack in the fuel pump housing. The remedy would be to replace the fuel pump assembly and filter. The overheating may be caused by several things, including a stuck thermostat, faulty water pump, or even a cracked head gasket. I suggest having a certified technician, like one from YourMechanic, inspect the relevant systems to pinpoint the cause of your vehicle’s hard starting issue and overheating problem.

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My car stutter starts, but only after driving it for a few minutes.
ANSWER : Hey there. This may also be caused by what is called the fuel pressure regulator. This is a unit that helps to maintain the fuel pressure at the proper level. When this is not working properly, the fuel pump may be pumping properly, but the fuel may not arrive at the fuel injectors at the proper psi. When this happens, this can cause a lean fuel condition which may cause the car to hesitate, misfire, or stall. If you would like to have an expert pinpoint the issue, a certified professional from YourMechanic can come to your car’s location to inspect the hard start problem and confirm which repairs are needed.

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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

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Push start will not start on a 2012 Dodge Journey after hooking up subwoofers and amp car did start after hookup but never started
ANSWER : Hi there. Unfortunately, we’re unable to offer technical assistance when aftermarket components or electrical upgrades are installed, as there are simply too many different things that could be causing your ignition problem. I would recommend contacting a local audio visual installation company or local automotive shop that completes electrical repairs to get some ideas, or purchase a service and repair manual for your Dodge to review the relay schematic to determine which ones you need to check and replace. This video might help you learn how to check for damaged relays – so you might want to watch it.

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