My car won’t start back up after idling and won’t read codes
i had my car idiling while cleaning it it cut out had gas and all in it i tried to then turn car on and it would crank but not turn over i tried a few more times i then hooked it up to a code reader and the car didnt throw no codes what could be the problem with the car not starting
My car has 180000 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
With the car idling for an extended period, your engine compartment will get extra hot and this may cause the ignition module to fail, resulting in a stalled engine that will not restart. In order to determine whether the ignition module has failed or another ignition component is at fault, you will need to check to see if your coil is giving out a strong spark. If you are not getting any spark, then the coil wires will need to be tested. Check to see if the coil is getting power on the red wire with the key in the on position, and then check for a pulsing power on the green wire using a test light. If you are not getting any spark out of the coil, but do have pulse power to the coil’s green wire when the vehicle is cranked, then you will need to replace the ignition coil. If there is not any pulse power getting to the coil, then you will need to replace the ignition module. If you still cannot determine which component is at fault, then contact a mobile mechanic, like one from YourMechanic, to continue the diagnosis of your no start condition.
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
You may have a dirty or failing idle air control valve. The idle air control valve reads the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and at idle.
Broken or Damaged Ignition
If your headlights can turn on, but your car won`t crank, that means that your battery is charged, but either the starter or ignition is the problem. If the starter or ignition is the problem, a starter engine can be jumped by using a charged 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. If something`s wrong with your battery, your car engine won`t turn over.
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.
Starting a vehicle with a bad crankshaft sensor can be risky and it`s unlikely to work. Disconnect the damaged sensor and try spraying a little starter fluid in the throttle body on your engine. Then, try cranking the engine to start the vehicle.
An idle air control valve, also called an idle air sensor control motor, is an electrically operated valve that controls the amount of air that bypasses the throttle plate in cars with a fuel injection system [source: Autozone]. This causes the idling speed of the engine to change as needed.
The IAC valve is controlled by an input signal from the ECU as required by the engine management system, the duration and frequency of the ECU input signal determines how long and how far the IAC valve opens, hence the amount of air that is allowed to bypass the throttle plate.
There are three major causes for a stalled engine: A lack of fuel, a lack of air flow and improper ignition. Running out of fuel is one of the most common causes of engine stalling, but dirty fuel injectors or a plugged fuel filter can also be the culprit. Your engine needs air to run properly as well.
Faulty Battery
A classic reason why your car starts for a second then dies is battery depletion. The car needs electricity from the battery to start. However, if your car starts then dies immediately, then the fault could be a lack of charging or damaged battery.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
My car won’t start back up after idling and won’t read codes
ANSWER : With the car idling for an extended period, your engine compartment will get extra hot and this may cause the ignition module to fail, resulting in a stalled engine that will not restart. In order to determine whether the ignition module has failed or another ignition component is at fault, you will need to check to see if your coil is giving out a strong spark. If you are not getting any spark, then the coil wires will need to be tested. Check to see if the coil is getting power on the red wire with the key in the on position, and then check for a pulsing power on the green wire using a test light. If you are not getting any spark out of the coil, but do have pulse power to the coil’s green wire when the vehicle is cranked, then you will need to replace the ignition coil. If there is not any pulse power getting to the coil, then you will need to replace the ignition module. If you still cannot determine which component is at fault, then contact a mobile mechanic, like one from YourMechanic, to continue the diagnosis of your no start condition.
Read Full Q/A … : My car won’t start back up after idling and won’t read codes
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 … : My car won’t start back up after idling and won’t read codes
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 … : My car won’t start back up after idling and won’t read codes
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 … : My car won’t start back up after idling and won’t read codes
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 … : My car won’t start back up after idling and won’t read codes
Car won’t start. When trying to start, starter makes a clicking noise and then closed back hatch recloses.
ANSWER : It sounds like there is some type of drain on the battery. When there is low voltage in a battery, it can cause several symptoms. The electrical systems can act very strangely when they don’t have the correct voltage being supplied. When a battery won’t hold a charge, it can be caused by a wiring issue, a bad battery, or some type of parasitic draw that can slowly pull voltage from the battery. Some electrical diagnosis done by a professional, such as one from YourMechanic, will be necessary to pinpoint the cause.
Read Full Q/A … : My car won’t start back up after idling and won’t read codes
Whenever I drive 1.5 miles, the s3 light starts blinking and then when I stop my car and come back to it, the car won’t start.
ANSWER : Hello, thank you for writing in. It is difficult to determine the issue without some more information. To start, when the check engine light illuminates, you want to scan the vehicle for diagnostic codes. These are what set the check engine light off, and are meant to tell the driver what the computer has detected is wrong. Codes can be pulled at most automotive parts stores, and by most technicians. Once you have that information you can focus in on one component or system. If the engine is truly overheating, then you want to start by checking your coolant and fluid levels. For more help with diagnosing and resolving the issue, contact our service department to schedule an appointment.
Read Full Q/A … : My car won’t start back up after idling and won’t read codes
Ok car starts and runs fine normal idle but once it gets up to warming temp it’s like it starts to bog and dies.
ANSWER : With the randomness of the codes you are pulling, it is hard to determine what they have in common. When diagnosing mechanical errors like this, keep it simple. Due to the loss of power and stalling issue, I would like you to look at the one component that may have a huge effect over all of theses parts.
The ELD is a unit which measures the amount of power coming from the battery. It allows the alternator to adjust the field, and the amount of power generated by it. If you are experiencing issues with the ELD, which allows the battery and alternator to behave incorrectly, the other electrical components in the vehicle will not work. You may have more than one issue that is all coming to a head at once.
You can test the ELD with a multimeter, but any electrical testing can be dangerous, and we recommend you proceed with caution. If you’re not comfortable with this repair, consider YourMechanic, as one of our mobile technicians can come to your home to diagnose the stalling issue firsthand and help you make the necessary repairs.
Read Full Q/A … : My car won’t start back up after idling and won’t read codes
