My truck turns over but stops turning over by itself and won’t start back up.
I had a bad water pump and I still drove my truck with the water pump bad keeping water in it…. I got a water pump and new alternator and a new battery and also I can hear my fuel pump… So now when I go to start it. It turns over and stops turning over by itself and won't start. Please help me
My car has an automatic transmission.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
Hi there. Sounds like you have a starter motor that is failing. When the starter relay gets hot, it will overload the ignition circuit and shut off when cranking. Check the battery cables to the solenoid on the starter and make sure that they are tight and clean. Check the remote wires on the solenoid and see if they are tight and clean. If the wires are tight and clean, then I suggest replacing the starter motor in your vehicle. If you need further assistance with troubleshooting your no start situation, then seek out a professional, such as one from Your Mechanic, to help you.
How to Identify and Fix Common car Problems ?
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The cause of this problem is usually one of 3 things – a failed starter motor, a bad connection between the battery and starter motor, or a blown fuse (if present) in line between the starter and the battery.
The most common reason a Chevy car (or any car) won`t start is a dead battery. If you have a battery tester, check your charge to see if it`s low. A dead battery can also be jumpstarted with jumper cables.
The source of a “cranks, but no start” problem on your Chevy 350 distributor install is most likely incorrect distributor alignment with the harmonic balancer or a mismatched balancer and timing tab.
If the engine cranks, but the car doesn`t start: Bad fuel pump: A faulty fuel pump won`t deliver fuel to the engine, even if you`ve just filled up. Bad spark plugs: Without hot sparks to ignite the fuel charge in each cylinder, there is no combustion and no expansion of the burning mixture.
A failing fuel pump is one of the faults that can cause this. Other likely problems would be the battery, alternator, battery cable, wiring harness fault, crank or camshaft position sensor. The fuel pump may have been replaced because it was not turning on.
Clogged Fuel Injectors
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.
Similar to the starter engine, a broken or damaged ignition switch can stop your car from starting. 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.
Common culprits include a faulty fuel pump or fuel pump relay. A clogged fuel filter or bad fuel pressure regulator is also common on return-type fuel systems. Another often overlooked problem is the vehicle simply being out of fuel. Sometimes the fuel gauge breaks or is inaccurate.
If the vehicle randomly shuts off while driving or stationary, there is usually an issue with the engine. Typical patterns here are issues with the ignition system, mixture preparation or fuel. A known error here is that the vehicle was refueled with the wrong type of fuel.
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.
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.
Connected to the battery is the alternator, which works to generate power for your vehicle`s electrical components. When you have a brand-new battery but still can`t start the car, the alternator might be the issue. Cold and damp climates may increase wear on an alternator, causing it to fail.
The O2 sensor will not cause the no start. The no start can be caused by the fuel pump or the ignition system. You should check the engine for spark and fuel pressure, when it is not turning on to help narrow the problem down.
One of the first and most common symptoms is simply no response from the starter when you turn the key – no noises or engine cranking at all. Sometimes, repeatedly trying the ignition can produce a result, but that`s not guaranteed. It usually means there`s a faulty connection in the solenoid.
The ignition relay is one of the most important electronic relays found on modern vehicles. It is usually located in the fuse and relay panel beneath the hood, and is responsible for providing power to the vehicle`s ignition system, and some of the fuel system`s components.
Can a bad spark plug cause a car not to start? Yes. The spark plug ignites the fuel/air mixture inside the cylinder. If the fuel doesn`t burn, the engine doesn`t make power.
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.
Fault in the Transmission
If it is cracked or damaged, or the fluid level in the transmission becomes low, the vehicle will die at the time of idling. A broken torque converter solenoid can also be the culprit. Defective auto transmission can cause this problem.
Stop/Start Technology† automatically stops and starts the vehicle`s engine under certain conditions. By turning off the engine when not needed, Stop/Start Technology can help improve fuel efficiency, thereby reducing greenhouse gas emissions (compared to the same vehicle with Stop/Start Technology not in use).
Malfunctioning spark plugs can make an engine stop for a while and resume its normal functioning. It can happen when you are driving. The engine can also sound rough when idle. The misfires affect the proper functioning of your car`s engine due to failing spark plugs that have no power to ignite the fuel-air mixture.
A manifold vacuum and/or barometric pressure, throttle position, engine RPM, coolant temperature, and vehicle speed sensor all modify the timing program.
Car Will Not Start: Over time, as the camshaft position sensor fails, the signal it sends to the engine control module weakens. When the engine no longer receives the signal, you will not be able to start your car.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
I parked my truck for 5-10 mins. Tried to turn it on, now it wont start, called a tow tow truck 15-20mins later my truck turned on
ANSWER : It is very likely that you have a powertrain control module failure. This can happen often on many GM vehicles. I would recommend having the powertrain control module tested and replaced as necessary in order to resolve this issue. After the powertrain control module is replaced, a reflash procedure will be required so that the vehicle can relearn all of its primary engine data. Once the reflash is completed, your vehicle should no longer have this issue.
Vehicle won’t start, once it’s jump started it only stays running until you turn it off, then it work start again without jumping.
ANSWER : Hi there. There could be two problems here. It is possible that your battery is bad and will not take a charge from your alternator while driving. In that case every time you shut your car off you will not have enough juice to start it again. Inspect your battery – it should have at least 12.5 to 13 volts to start your car, if it doesn’t you will need to replace the battery. The second problem could be that your alternator is bad and not charging your battery, in this case you will need to replace your alternator. Both the battery and the alternator can be tested in your car. If you would like to have the car checked for you, a certified professional from YourMechanic can come to your car’s location to diagnose the starting problem and proceed with repairs.
Car won’t turn over. No lights come on when I turn it. Can’t even lock my doorsvor push the seat up or back.
ANSWER : Your probably correct, it sounds as though your battery is done. But it also sounds like you have charging system issues. I’m not sure that fixing your battery and charging system will solve the problem with the car shutting off, but it’s possible that it will and it’s a darned good place to start. By contacting Your Mechanic, you can have a technician come to your home or office to check out your car and help you figure out what to do next.
My truck turns over but stops turning over by itself and won’t start back up.
ANSWER : Hi there. Sounds like you have a starter motor that is failing. When the starter relay gets hot, it will overload the ignition circuit and shut off when cranking. Check the battery cables to the solenoid on the starter and make sure that they are tight and clean. Check the remote wires on the solenoid and see if they are tight and clean. If the wires are tight and clean, then I suggest replacing the starter motor in your vehicle. If you need further assistance with troubleshooting your no start situation, then seek out a professional, such as one from Your Mechanic, to help you.
Truck won’t start
ANSWER : Hi, thanks for writing in. I’d be happy to provide my insight. There are a variety of potential issues that may have caused this. The oil light coming on should not have anything to do with the truck stalling unless the oil level is severely low and the truck’s computer may have gone into "safe mode", which is a safety feature of the truck that is engaged when something goes wrong with the truck that may be catastrophic in terms of engine failure or safety. When this happens, the computer simply shuts the truck down and will not allow it to move in an effort to preserve the engine and safety of the passengers.
If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this no-start issue for you, and make or suggest any repairs as needed.
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.
Engine turned off but inside of car still on, now engine won’t turn back on.
ANSWER : Hi there. The symptoms you’re describing with your boyfriend’s 2002 Grand Cherokee appear to be related to a broken or worn out ignition switch or relay. The ignition switch on the inside of the steering column is attached to multiple electronic connections that send signals to a relay box; which in turn, sends the signal to the individual components. The issue could be related to the ignition switch, the relay, or any of the components in between. If you want to have the fault pinpointed in person, I would have this starting issue inspected by a trained professional to ensure that the correct repair is made.
Car started with a jump start earlier today, but won’t start now despite turning over.
ANSWER : It’s possible that when you jump started the car the first time that an electrical relay may have been damaged. This is a very rare situation, but has been known to happen on some GM products like your Chevrolet Avalanche. It’s also possible that an ignition system component like the crankshaft position sensor or relay may also be faulty which wouldn’t be related to the battery. The best thing for you to do is have a mobile mechanic come to your home and complete a car is hard to start inspection, so they can pinpoint the source of your truck’s issues.
