car cuts off after 2 seconds of running but my radio will still be on.
when I off the car with the key, it dose not short down completely my radio will still be on which always run down my battery I driving it like that. until some one told me is the ECU and i bought another one to replace the one. when the one ecu was removed and the new one installed the car refused to program and eventually it started offing after two second. we decided to return the old ecu but still the car refused to start the green key light keep blinking. the car is here now and it done not start neither is it offing completely. what should I do as 7 electrician has checked it no way.
Experienced mechanics share their insights in answering this question :
Hello. Likely it is a faulty immobilizer ECU causing the trouble. To help determine this you could call the dealership and ask them for the immobilizer bypass code for your vehicle. If the code is entered and the vehicle stays running then it is more likely your immobilizer ECU at fault.
Other than an immobilizer unit the trouble could be caused by a faulty ignition switch or ignition relay. The Ignition switch and relay are critical components for sending the signal to turn the vehicle on and off. Your vehicle is presenting signs of a security lock out. Common causes of security lockouts with Honda and Acura are a bad battery or poor connections leading to the battery. I suggest that a technician test the ignition switch key reader, ignition relay, the battery, and its related connections.
Other than an immobilizer unit the trouble could be caused by a faulty ignition switch or ignition relay. The Ignition switch and relay are critical components for sending the signal to turn the vehicle on and off. Your vehicle is presenting signs of a security lock out. Common causes of security lockouts with Honda and Acura are a bad battery or poor connections leading to the battery. I suggest that a technician test the ignition switch key reader, ignition relay, the battery, and its related connections.
Please keep in mind that here at YourMechanic we have a several technicians to chose from in a wide range of cities and states.
You are able to find a technician and schedule an appointment here
https://www.yourmechanic.com
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
If a head unit is wired wrong, so that the “always on” wire is connected where the switched wire should be connected, the radio won`t ever shut off. It will always have power, so it will continue to draw down on the battery even after you shut the engine off and remove the keys.
So, to ensure that the battery has the maximum available power (“cranking amps”), other electrical systems are cut off when the ignition switch is activated. This includes the radio, lights, displays, etc. Some people may have noticed that not all vehicles do this however.
The problem is often in the speaker wiring. A break or crimp in the speaker wiring, often where it passes into a door, can cause the sound to cut off entirely. The problem could also be a bad amplifier or bad wiring to the amplifier. If everything else checks out, the head unit itself may have failed.
Check For Fuses – You`ll need to check one or more fuses on most vehicle radios, and you could also have auto amplifier circuits and other related components in the mix. One will be found in the car`s main or auxiliary fuse block, and it will be clearly labelled.
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.
Common reasons for this to happen:
Low fuel pressure, dirty or defective fuel injectors, or broken fuel pump: The fuel pump is responsible for transferring fuel from the tank to the engine.
Then, what could be the problem why my car won`t start but the radio and lights work? There are many reasons for this, including a drained car battery, faulty ignition system, problems with the starter solenoid, blown fuse, or your car may be running out of gas.
To keep the radio on when the car is off, simply turn your key once in your ignition to access accessory mode. If you have a push-to-start vehicle, you will need to: Put the car in park. Remove your foot from the brake.
A car radio can stop working for many reasons: from a lack of power, a blown fuse, faulty wiring, screens, tuners, speakers or displays, or you may just be locked out of your stereo`s security feature.
While a dead battery, or a jump start, can result in a car radio that doesn`t work, it could also be a pure coincidence. If your car radio stopped working after a jump start, or after a battery charge, then the problem might be related to a car radio code anti-theft feature.
If your radio is turning on but there is no sound. First check radio functions, be sure you have an audio source selected like Radio. If using AUX, USB or BT AUDIO be sure you have a device connected to the correct input. Be sure the radio is not Muted.
If you have the power saving mode turned on, your music apps might stop playing and even close automatically in order to save battery because of battery saver algorithms. If the issue has only surfaced after updating your device to the latest Android version, it could be a system issue.
Common Causes of Stereo Problems
Poor grounding. Blown fuse. Bad or damaged wiring. Anti-theft mode.
Radio reception problems are normally caused by a weak signal or an interfering signal. Possible causes could be: The signal may be reduced by an obstruction blocking your antenna from the signal, such as trees, hills, or severe weather.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
car cuts off after 2 seconds of running but my radio will still be on.
ANSWER : Hello. Likely it is a faulty immobilizer ECU causing the trouble. To help determine this you could call the dealership and ask them for the immobilizer bypass code for your vehicle. If the code is entered and the vehicle stays running then it is more likely your immobilizer ECU at fault.
Other than an immobilizer unit the trouble could be caused by a faulty ignition switch or ignition relay. The Ignition switch and relay are critical components for sending the signal to turn the vehicle on and off. Your vehicle is presenting signs of a security lock out. Common causes of security lockouts with Honda and Acura are a bad battery or poor connections leading to the battery. I suggest that a technician test the ignition switch key reader, ignition relay, the battery, and its related connections.
Other than an immobilizer unit the trouble could be caused by a faulty ignition switch or ignition relay. The Ignition switch and relay are critical components for sending the signal to turn the vehicle on and off. Your vehicle is presenting signs of a security lock out. Common causes of security lockouts with Honda and Acura are a bad battery or poor connections leading to the battery. I suggest that a technician test the ignition switch key reader, ignition relay, the battery, and its related connections.
Please keep in mind that here at YourMechanic we have a several technicians to chose from in a wide range of cities and states.
You are able to find a technician and schedule an appointment here
https://www.yourmechanic.com
Read Full Q/A … : car cuts off after 2 seconds of running but my radio will still be on.
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.
Read Full Q/A … : car cuts off after 2 seconds of running but my radio will still be on.
When running the radio and/or HVAC, the car (while creeping to a stop) will almost stall and all lights will dim and the radio cuts off.
ANSWER : Hi and thanks for contacting YourMechanic. Look under the vehicle to see if the motor mounts are broken or missing. This can cause the engine to tilt too much causing a short in one of the high voltage wires. As the engine is accelerated, the engine is placed in a more upright position. However, when coming to a stop, the engine no longer has a load on it, so it will drop down. If you need further assistance diagnosing the electrical issues with your vehicle, then seek out a professional, such as one from YourMechanic, to pinpoint the problem and follow through with repairs.
Read Full Q/A … : car cuts off after 2 seconds of running but my radio will still be on.
Car shuts off, won’t stay running
ANSWER : The most common problem on this vehicle is the fuel pump and fuel pump module. If you remove the rear seat that the fuel pump cover is, on the passenger side. Listen to the fuel pump when it is running and when the car stalls your fuel pump will stop running about three to five seconds before the engine dies. Then you’ll know if the fuel pump is the culprit or not.
You can try and replace the fuel pump module first then replace the fuel pump. However, the fuel pump can short the module out, causing both to be bad and would need to be replaced. If you need assistance with this, feel free to contact a certified mechanic who can diagnose your starting issue firsthand and help you fix it accordingly.
Read Full Q/A … : car cuts off after 2 seconds of running but my radio will still be on.
My car jerks when i put it on R/D and also there is a 2 seconds delay when i put it on reverse ( gear takes 2 seconds to engage )
ANSWER : The transmission has electronic controls as does the engine. It’s possible there is an electronic issue. A faulty transmission control module can give symptoms like you are experiencing. The brake light switch can also cause issues. On modern cars, the brake light switch also performs as a sensor for various systems like the ignition and anti-lock brake / stability control systems. Even if the check engine light is not on, there may be fault codes stored in the system. A certified technician can inspect the vehicle for shifting issues by scanning the system for faults. Fault codes will give the technician a direction to take in finding and repairing the exact cause.
Read Full Q/A … : car cuts off after 2 seconds of running but my radio will still be on.
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 … : car cuts off after 2 seconds of running but my radio will still be on.
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.
Read Full Q/A … : car cuts off after 2 seconds of running but my radio will still be on.
My car is running hot, what could be the problem?
ANSWER : There could be an issue with the cylinder head gaskets. Antifreeze can break down and become acidic if not replaced as normal maintenance. The head gasket material erodes and can cause engine compression to build up in the coolant system. This will prevent the flow of coolant which can create an overheating condition.
There is a test that can be done to check whether there is carbon monoxide in the coolant system; it involves special equipment.
I recommend having your overheating condition inspected, and perhaps have a block test performed.
Read Full Q/A … : car cuts off after 2 seconds of running but my radio will still be on.
