Even after jumpstart car won’t start. Help!
Car won't start even with a jumpstart.
Experienced mechanics share their insights in answering this question :
Do you know the condition of the battery? Sometimes a battery can be so bad that it will not allow the vehicle to jump start. If the battery is known to be good the next likely culprit for your concern would be the starter itself or the battery cables connecting the battery and starter. If the connections or cables are bad they will not allow electricity to flow to the starter properly and crank the engine. The last possible cause for your concern would be that the ignition switch is not sending the command to the starter to turn your engine over. I would enlist the help of a certified mechanic with the proper test equipment to pinpoint where the problem is and correct it.
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
Your car`s ignition switch, alternator, battery, starter, or a fuse could be malfunctioning. Your safety switch could be broken. This switch keeps your transmission from starting unless you`re in park or neutral. If it is malfunctioning, it will keep your car from starting.
Your alternator is bad: If your car still won`t work, even after a jump, the alternator could be the culprit. The alternator is responsible for sending energy back to the battery, replacing what the battery loses from starting the car and performing other functions.
The most common reasons a Hyundai Sonata 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.
Why won`t my car start but the battery is good? If your car won`t start but the battery is good, the most common cause is a faulty starter – though it could also be to do with your fuel. You may have insufficient fuel to get the car going.
It is possible in some cases to jumpstart a vehicle that has a faulty alternator, as long as the battery has enough of a charge to keep running. However, the alternator should be replaced as soon as possible.
it sounds like you may have a problem with the charging system not properly maintaining a charge on the battery. The clicking sound (usually very rapid) is a result of the battery not generating enough power to cause the starter motor to turn the engine over.
If the terminal connections are corroded or loose, electrical flow to the rest of the car will be restricted, so your car won`t start even with a jump. Removing the cable ends and cleaning the corrosion with a wire brush (and retightening the bolts) should restore full electrical power to your car.
Bad or dead battery
The most common reason cars don`t start is a dead or faulty battery. Even though most cars run on gasoline, they all require electrical power to function. The starter that cranks your engine to start requires an electrical signal to fire.
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.
The diode trio and the diodes in the bridge are not designed to handle voltage and current delivered in the reverse direction. The alternator`s output terminal and ground are not good connection points for clamps when jump starting a vehicle.
You should expect jumpstarting a dead battery to take five minutes, but in harsh conditions, it could take up to thirty minutes to jumpstart your car. You need to drive for at least fifteen minutes after a jumpstart to fully recharge the battery.
Most cars have their solenoids mounted right on the starter motors, connected to other “starter” components like the starter gear and starter control terminal.
When Do You Disconnect the Jumper Cables? As soon as both vehicles are running, you can disconnect the jumper cables. Remove the clamps one at a time, in the opposite order you placed them. Start with removing the black cable from the engine block, and then remove the other black clamp from the working vehicle.
One of the reasons your spark plugs might be firing incorrectly is due to a faulty crankshaft position sensor. It`s this sensor that tells your engine`s computer the position of all the valves and pistons at any given moment. The ECU then uses this information to determine when to fire the spark.
Poor Engine Performance
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.
If the ignition switch fails while the engine is still on, it may cut off power to the ignition and fuel systems, which will cause the engine to stall. Depending on the exact issue, the vehicle may or may not be able to be restarted a short while later.
Here are some reasons why your car battery won`t hold a charge after a successful jump start: The car wasn`t driven long enough for the battery to recharge fully. The vehicle charging system has a problem, like a bad alternator or voltage regulator. An electrical system was left on, draining the battery.
Poor ground connections are an often-overlooked cause of low charging output and alternator failure.
One of the most common problems you`re likely to experience with an alternator is a failure in the bearings. There are needle bearings in the alternator that allow the rotor to freely spin inside the housing, and those bearings can break down over time as a result of exposure to heat and dirt.
If your car will not even start upon your turning of the key in the ignition, it is likely that you have a dead battery. Jump starting your car is an effective method to fix this problem.
The starter relay makes a clicking sound, but the engine does not rotate, which indicates that the starter motor is not receiving enough current from the relay. This may also be a sign of low or exhausted battery power. Only when it transmits enough current to the starter, the relay starts to work.
If your car will not even start upon your turning of the key in the ignition, it is likely that you have a dead battery. Jump starting your car is an effective method to fix this problem.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
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.
Read Full Q/A … : Even after jumpstart car won’t start. Help!
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.
Read Full Q/A … : Even after jumpstart car won’t start. Help!
Car won’t start. The check engine light, battery light, and oil change light are coming on. I tried jumping the car and nothing happened. Why won’t my car start?
ANSWER : Hi and thanks for contacting Your Mechanic. If sometimes your vehicle will start with the new alternator and sometimes it won’t, then there is a loose connection in your charging system. Check all of the wires to the alternator and to the battery. Make sure that the battery cables are clean and tight. Make sure that the wires to the starter are clean and tight. A loose ground to the ignition system will cause the vehicle to not crank over. Check all of the ground wires from the battery to the starter. Make sure that they are clean and tight. If you need further assistance troubleshooting your no start situation, then seek out a technician, such as one from Your Mechanic, that can assist you.
Read Full Q/A … : Even after jumpstart car won’t start. Help!
The car crank but won’t start
ANSWER : Hi there. This does sound like an issue with the wiring. If the check engine light is coming on every now and then this means that when it does not come on there is no power to the computer. This can be the wiring harness issue or an ignition switch problem. I would have to test for voltage to the computer when the problem is occurring to be able to find where the issue lies. If you need assistance, a certified YourMechanic technician can be dispatched to your location to inspect your vehicle’s non-start issue and suggest any necessary repairs.
Read Full Q/A … : Even after jumpstart car won’t start. Help!
The car is having trouble starting up ,70 percent of the time it starts right up. the other 30 percent, it randomly won’t start its
ANSWER : Hey there thanks for writing in about your 1998 Honda Accord. This could be a few things. A faulty ignition switch, a failing crank sensor, or possibly other faulty sensors could be the cause. To have this taken care of, consider having a certified technician, such as one from YourMechanic, come to your car’s location to diagnose and repair the hard start issue.
Read Full Q/A … : Even after jumpstart car won’t start. Help!
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.
Read Full Q/A … : Even after jumpstart car won’t start. Help!
Car intermittently won’t start
ANSWER : Hi there. An intermittent no start condition, can be difficult to diagnose. Replacing the fuel filter would not hurt anything, especially if it hasn’t been replaced in the last 30,000 miles. Diagnostic procedures should be performed, at the time of no start, to confirm whether there is a loss of fuel, of spark or both.
Assuming the Check Engine Light is not coming on, leads me to believe the ECM (engine control module)/computer is not recognizing the fault. There are many possibilities for a no start condition: a faulty ignition switch, fuel pump relay, fuel pump, ignition coil, ignition module, crankshaft position sensor, camshaft position sensor.
Replacing components without diagnoses can be expensive and time consuming without resolution. I recommend having your vehicle’s intermittent no start diagnosed and repaired by a certified technician, such as one from YourMechanic, so that this can be repaired correctly.
Read Full Q/A … : Even after jumpstart car won’t start. Help!
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.
Read Full Q/A … : Even after jumpstart car won’t start. Help!
