- CHEVY COBALT 2010 DIE AFTER FEWS DAYS HOW TO
- CHEVY COBALT 2010 DIE AFTER FEWS DAYS MANUAL
- CHEVY COBALT 2010 DIE AFTER FEWS DAYS CODE
This is a condition that happens when the ignition lock has worn out.īasically, the vehicle is only being told to “be on” when the starter is engaged, and all systems are going off when releasing the key. When you start your Cobalt, it may be that the vehicle’s systems are only coming on when you hit the starter. If you do end up cleaning it, make sure that you get a cleaner specifically designed to clean the sensor and nothing else.
CHEVY COBALT 2010 DIE AFTER FEWS DAYS HOW TO
Here’s a in depth article on how to diagnose a bad mass airflow sensor. Follow the wiring as far as you can and make sure that it is not burnt, frayed, or in any other way damaged. Take a look at the wiring harness around it and make sure that it is plugged in good and tight. If it is not properly giving a proper reading, it is known to make the car not start. It is one of the most important components that the vehicle uses to determine the air/fuel mixture. It sits in between the air filter and the throttle body. The mass airflow or “MAF” sensor meters the amount of air entering your Cobalt’s engine. If you have a coil on distributor engine, a bad coil can start a car, but might not have enough spark to keep it running. Most modern vehicles are powered by individual coil packs. If it drops lower, the engine dies, but then the fuel pressure bounces back, it’s most likely a bad fuel pump or fuel filter.Īn experienced mechanic with a good scanner can check the voltage at the fuel pump relay to determine if it is getting constant voltage. Now start the engine.ĭoes the fuel pressure drop almost immediately? Does it go all the way to zero? If it drops all the way to 0 and doesn’t come back, it’s most likely the fuel pump relay. Take note of the fuel pressure as you turn the key to the on position. But, most engine’s have a port that will allow you to check the fuel pressure with a gauge that you can rent or buy from a store such as Autozone. The fuel pump may be providing enough fuel pressure when starting the engine, but not providing enough to keep it running. There are a few reasons that you may not have enough fuel pressure. When they don’t have the proper pressure, they can’t run properly. Modern fuel injected engines need a lot of fuel pressure to keep running. Here are some of the most common reasons that your Cobalt starts then stops running:
CHEVY COBALT 2010 DIE AFTER FEWS DAYS MANUAL
We recommend looking to see if there are any OBD2 codes before proceeding with any manual diagnosis. Modern vehicles have complex computer systems that can tell you the reason that the vehicle is dying immediately after starting it. This is one of the most common reasons why a car starts and then dies. If there is not enough fuel pressure to meet the needs of the vehicle, the engine will shut down. As soon as the engine gets enough fuel, air, and spark it runs on its own.Īt this point the starter is disengaged and the vehicle will need a constant supply of gasoline. Once you hit the starter it turns the engine slowly. When you turn the key to the on position, all three of these system engage and are ready for you to start your Cobalt. If you vehicle starts up, but then immediately quits, it may be getting all three at first, but something is clearly keeping it from getting all three consistently. Your Cobalt’s engine needs 3 things constantly and in the proper proportion to keep running. It is most likely caused by some type of issue with the electrical or fuel system. May not have the hard brake pedal either, usually associated with a bad booster.It can be very disconcerting if your Chevy Cobalt is starting and then dies. Sometimes the car will run great most of the time. They can tear the diaphragm and cause a vacuum leak.
I have seen the brake booster do similar things as well.
CHEVY COBALT 2010 DIE AFTER FEWS DAYS CODE
Most times it would also have a code that would be associated with it being bad. It would affect idle and some would have a dead spot when accelerating. Other GM vehicles I’ve had similar issues with were when the throttle pedal was going bad. Just trying to get the best fuel mileage I can. Honestly not enough to cause a problem, but I cleaned them and closed the gap back to where it’s supposed to go. Decided that at 20k miles it was worth a look. I had put some NGK G-power plugs in my car. I assume you used some decent spark plugs. Is it possible that there may be a bit of carbon causing a lip where the butterfly valve might be sticking? I know I have a lot of cars, most recently a couple of Camrys, that needed the tb cleaned a bit. I know you said the throttle body has been cleaned. Is it showing any codes for vvt solenoids or cam or crank sensors? You say yours is a 2010 model so it should have the solenoids, where as older models did not.
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