Car not starting up sometimes
Okay so my car sometimes won't start, but it has power. i've had this car since July and i used to have this problem since then. but i recently changed the battery and it was alright for 2 weeks and now it still has trouble starting. when i start it the motor works and then dies. I usually try till it starts. sometimes i move it and it runs but when i come to a stop at a roundabout or a traffic light it shuts off. the battery is fine though i don't know what to change.
My car has 500000 miles.
My car has a manual transmission.
Experienced mechanics share their insights in answering this question :
You have a faulty, possibly intermittent, fuel system and/or ignition system problem(s). Due to the age of the vehicle, you could indeed have a combination of problems. For example, fuel injectors will often get plugged given enough time and miles. You could have high resistance in plug wiring or worn out plugs. You could also have a bad cold start injector or injector time switch. Lastly, this could be fuel pump and/or fuel filter related. All these possibilities have to be tracked down systematically. A problem of this sort has to be dealt with in an orderly systematic way to get to the root cause. For more help, consider YourMechanic, as a certified technician will be able to come to your home or office to diagnose the starting issue.
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 Toyota Land Cruiser won`t start are a dead battery, an alternator problem, or failed starter.
Most commonly, its caused by a fuel pump that`s not working. The fuel pump fuse may have blown, or the fuel pump itself will need to be replaced. Alternatively, this problem could be caused by a leak in the fuel lines, clogged fuel injectors or a bad fuel pressure regulator.
If the engine will not crank over, the most common problem is the starter. These will tend to go out at about 100,00-125,000 miles. Sometimes it is only the starter solenoid, but often the complete starter (including solenoid) needs to be replaced.
If the car cranks when you turn the key, but the engine won`t start, it could be because fuel isn`t getting to the engine. One potential reason for this could be dirty fuel injectors. Over time, the fuel injector nozzles can become clogged with rust, corrosion or debris.
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.
Hard start symptoms and starter failure may NOT be caused by the starter, but could actually be caused by the crankshaft position sensor. If your vehicle is experiencing one or more of these symptoms, the crankshaft sensor may be at fault.
Defective ignition switch If you know your battery is working properly, but your car doesn`t turn over on the first few tries, you might have a problem with the ignition switch. You can try to narrow down the cause of your issue by turning on your headlights.
Steering issues are common in most Toyota Landcruisers. Maximum drivers have noticed crippled power steering due to a spring leak. Due to a faulty spring, the steering wheel fails to respond as per the driver`s instruction, causing further damage to the car steering.
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.
My car won’t start, neither does my auto. Start. Sometime it might start if I jump it sometimes it won’t.
ANSWER : Hi there. There are a number of issues that will make a car hard to start. Everything from the electrical system to the fuel system to the actual starter itself can be the problem. Finding the root cause of a hard starting engine can take some investigation. Ignoring a hard starting issue can further damage the vehicle, which will often result in a more expensive repair. You might want to have a mobile mechanic complete a car is hard to start inspection so they can pinpoint the source of the issues you’re having and recommend the right repairs be completed.
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.
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.
Sometimes car won’t start, sometimes car starts great – 1998 Mercury Grand Marquis
ANSWER : I usually try not to split hairs when it comes to batteries. If it is 3 years old or older, and it gives you trouble, it’s most likely time to replace the battery. Load tests are okay, but do not cover all that can go wrong internally.
Did you fully charge the battery first? Does the car sit for extended periods? You may consider having a local expert check the battery with an advanced tester that will check for most problems. They can also check your alternator. A bad battery can ruin an alternator so is it really worth it? If you would like to have this checked, a local technician should diagnose your battery in person to see if it is ready to be swapped.
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.
Car not starting up sometimes – 1998 Toyota Land Cruiser
ANSWER : You have a faulty, possibly intermittent, fuel system and/or ignition system problem(s). Due to the age of the vehicle, you could indeed have a combination of problems. For example, fuel injectors will often get plugged given enough time and miles. You could have high resistance in plug wiring or worn out plugs. You could also have a bad cold start injector or injector time switch. Lastly, this could be fuel pump and/or fuel filter related. All these possibilities have to be tracked down systematically. A problem of this sort has to be dealt with in an orderly systematic way to get to the root cause. For more help, consider YourMechanic, as a certified technician will be able to come to your home or office to diagnose the starting issue.
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.
