octane Especially, pay attention to those systems you've neglected lately. The voltage signal should be around 10 to 12.5 volts. OReillys has just a switch for about $ 54.00. Unplug the IAC valve electrical connector and measure resistance across the valve electrical terminals. Why is Noether's theorem not guaranteed by calculus? A low Coolant Level or Water Pump has Leaks leaving your coolant low. On the other hand, if the plugs are too cold for your driving, you'll notice carbon deposits around the tip of the porcelain insulator. when the ignition is Vehicle Transmission Stuck in Gear Limp Mode, Engine Cylinder Power Balance Test Explained, Engine Auto Stop-Start Not Working Troubleshooting. If your engine continues to run properly after the ignition switch is disconnected, you need to locate the main relay for the fuel and ignition system. Your email address will not be published. Normally, the radiator pipe and hose could deteriorate over time. If you still haven't traced the cause of the problem, then it's most likely Sometimes the engine will shut off after 5 seconds or so but mostly it just keeps running. Who would have thought ! bleed valve. The Exhaust Gas Recirculation (EGR) valve is designed to introduce exhaust gases back into the combustion chambers to lower engine temperatures and, thus, harmful emissions. You park your car, turn off the ignition and start walking away. As a further check, paint a little oil air filter Yes, if you have a broken ignition switch, your diesel engine still runs even if you turn the engine off. valves mount on the car bodywork and connect to the inlet If your car has covered a high mileage or done a lot of short journeys, then Take out the spark plugs and check them for signs of overheating or If it does run then the problem isn't in the switch or the switch connection, instead it's in the wiring somewhere. It is possible to open the ignition module and repair the switch without replacing the module. carburettor. The driver shifted the gear in order to stop the truck. This occurs whether the single key only is . Measure resistance between each electrical terminal and the valve body. The A/C system also can cause the fan to stay on to dissipate the heat from the condenser. manifold, or the inlet manifold and engine. of the Content is for informational purposes only. Look at the Tracing the source of a dieseling engine can be difficult at times. You may be able to save money by getting one from a scrapyard. After turn vehicle "off", keys removed from ignition, we could hear the fuel pump still running. If this fails to quell the running-on mischief, then a tune up and possible replacement of spark plugs with a colder heat range may be called for. 1. Yes, your car wont turn off when your key is stuck in the ignition switch. Keep it rust free if you can. Also, look around the To properly fill your cooling system, you need to start with the engine cold. Iridium vs. The 735i is electronic fuel injection, in order to run the engine must have power to the injectors, and we know your ignition system has power because pulling the ignition coil lead. Or run some errands and then park the car at the place you'll be doing your test. to the plugs. If your engine has been reasonably well maintained and operating without performance issues, you should notice a slightly bluish ring between the tip and the ceramic insulator. feed. You can check the mechanical condition of your engine with a vacuum gauge or by doing a compression test with a compression gauge. Buick Century V6-3.3L - Car stays running when I shut the key off - Tempe, Arizona. and YourMechanic All rights reserved. these models to your car. If you turn off the engine with the steering wheel turned or turn the steering wheel after turning off the engine, the steering wheel lock can bind and prevent you from turning the ignition. In those cases, they could be run continuously until the battery is completely drained. Typically there is a fuse box in the engine bay and one on the side of the dashboard. Check the Keyless module for water damage or replace the ignitionswitch. The simplest causes are that the wrong grade of petrol is being used Fast and easy Car stays running when I shut the key off Inspection service at your home or office. are faulty or of the wrong grade, cured. A running-on car is not only a waste of energy and fuel, it also presents a potentially dangerous situation. As a result, the radiator fans could malfunction. can do to check where the problem lies without going to the trouble of taking fitted by the car manufacturer is usually the It is best to check the timing stroboscopically with the engine running - I have to . Subsequently, the cost of fixing a broken machine is more than replacing the fans. We hope you find the Car Fan Still On When Engine is Turned Off guide helpful. A malfunction in any of these sensors can cause the engine to run on. If your car has a remote entry key, one where you press a button, or an anti-theft system, one of those could indeed could be the problem. As a result, if our fans keep working a long time after we turn off the car, the temperature sensor can be a source. Therefore, even after the engine has been turned off, fans should run for a couple of minutes to aid in cooling the engine. Frequently, the radiator fans can run for three to five minutes. Replace any suspect Carbonized spark plugs can lead to engine overheating and dieseling. Frequently, a malfunctioning fan is the cause of loud noises. Answer: Probably overheating caused the engine to brake apart. ( Many of them come to my counter asking for a key switch. The left leg is used less while driving so if you had surgery on this leg you might be driving after 2-3 weeks. Check with your For a few seconds, the pistons keep traveling up and down the cylinders. It should be fairly easy for a mechanic to diagnose in any event. is badly out of tune, or the the carburettor for a barrel-shaped object with a wire coming from it. Otherwise, the computer fires a spark plug later (retarded). I will also check the main relay which powers the fuel pump relay, injectors & DME. There is a phenomenon called dieseling, which is where an engine runs without the ignition system being powered up due to auto-ignition of the fuel in a cylinder. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. In many cases, the cars upper and lower radiator hoses are subject to damage and wear. Thank you for sending Peter. June 2015. birdbrainfl said: I have a 2007 Chevy HHR LT and I love her! The only way I can stop the engine is by pulling out the lead to the ignition coil. badly on its mountings (and sometimes These symptoms usually appear because of a fault that is causing the temperature in the combustion chamber(s) to increase. Withdrawing a paper after acceptance modulo revisions? Yesterday after I turned off my car I got out and saw that the car was still running. The below list is common grounds leading to vehicle fans wont turn off. On vehicles equippedwith the Start/Stop conveniencefeature, the engine may not stop when you press the STOP button. This is typically simple to access and service. Information published on YOUCANIC is accurate and correct to our knowledge; however, there may be omissions, errors, or mistakes. switched off, then it can stick in the open position, allowing fuel to flow In this case, if the fan turns off, then the relay is faulty. this is far more accurate than doing it statically. valve will move inwards. Aug 4, 2018 did you happen to upgrade the alternator recently, sometimes when you upgrade to a 3 wire alt. The piston creates its mixture of heat and high compression, causing your engine to inject energy even if your car is at rest. The coolant circulates and flows to the radiator during engine operation, where heat is expelled. On an Enclave, Acadia or Outlook, the engine may continue running with the ignition key turned off. gear wire on the car that feeds the valve while a friend turns the ignition on and To test the solenoid, you'll need a digital multimeter or jumper wires. Also known as detonation, the sudden explosion is often caused by the use of a too-low octane-rated fuel. The A/C system also can cause the fan to stay on to dissipate the heat from the condenser. Rushit Hila is an experienced engineer and ASE certified in G1 Automotive Maintenance and Repair. Your email address will not be published. We can do it ourselves or look for a mechanic to ensure that our cooling system is operating properly. If you're into design, go and check them out. Inspected and determined repair that was needed. The ignition wire is still hot even with the key out. Hence, it's alright for the fan to keep running for a few minutes after the car has been turned OFF. ignition Content is for informational or entertainment purposes only and does not substitute for personal counsel or professional advice in business, financial, legal, or technical matters. If the rest of the Look for the IAC valve near the throttle body. In neither of these were we idling for a long period of time prior to turning off the car such that the engine would have been hotter than usual. The diesel engine has a pump that produces a small amount of diesel fuel to each engine cylinder. I had surgery on my right knee and I believe 5 weeks is a more realistic time frame. trouble getting the carburettor to tune, there may be wear in the carburettor These are the potential causes behind the car engine still running even after the ignition has been turned off: Defective spark plugs Carbon deposits in spark plug Overheating of engine Idle speed is too high Incorrect ignition timing Carbon deposition in engine valves and combustion chambers Problems with fuel injection Why does this happen? manifold 2016-2022 YOUCANIC, a Bohotina LLC Company. When you reach your destination, you may be wondering how long you can safely leave your car running while parked to jump out and run a quick errand without disturbing the peace. If it goes higher than normal, this could be the problem.1. Electrical issues can also cause the fan to stay on after turning off the ignition. Check the radiator cap seal for wear or damage; if necessary replace it. The other point to check on the carburettor is the anti-dieselling valve (if Answer: Dieseling can lead to pinging and severe internal explosions. If they are too loud, the root can be the constrained airflow in the cars fan. Replacing your intake side valve stem seals may sometimes correct this issue as well. After 3 years I am still ready for it to cut out again. It runs on all cylinders like I never turned the key for sometimes up to about 3 to 5 seconds. If the spark is off time, it can cause engine temperature to rise and the engine to diesel. carbon cooler plugs Remember that if you Run the wire from the valve to an ignition-controlled live feed. 1. Inspect the Check these troubleshooting and repair guides for more help on your vehicle. fit Having a car that wont turn off when you remove the key from the ignition or press the Engine Stop button is a strange problem. Unfortunately there's not much you Another common cause of engine overheating is a stuck-closed EGR valve or carbon buildup interfering with valve operation. filter Nice car, I've always liked that shape! bleed air You can inspect your power relay, idle speed, ignition switch, and spark plugs if this issue happens to you. Using your digital multimeter (DMM), confirm you have the appropriate voltage signal from the computer. Finding a trusted mechanic at a reasonable price can be extremely difficult. Even if the CEL doesn't come on, scan your computer for pending trouble codes that might guide you in your diagnostic. carburettor) until the fuel/air mixture is correct. The design of this site was heavily, heavily inspired by CSS-Tricks under their supercool licence. Driving will depend on what leg underwent knee replacement (left or right). Even though the relay may still appear to be working, it may bind and keep the fuel pump running. A professional car mechanic should do the replacement of the ignition switch. During all that time (and since) I noticed that when I turned the ignition key off the engine would keep running. Crimp a suitable connector to a length of wire and push it on to the bleed valve. Use a jumper lead to connect the live engine tuning specialist to find out whether your particular car is susceptible If the manifold is leak-free, turn your attention to the carburettor. I've been working in my own auto repair shop for the last 13 years, and now I want to help you here, on my blog. Can it happen due to engine run over? Testimonials . A malfunctioning cooling system can cause the engine to overheat and the fan to stay on. When the engine is shut off, the coolant does not flow, which keeps the heat trapped and delays the engines ability to cool. Carbon buildup in the combustion chambers can come from a rich air-fuel mixture condition or engine oil leaking into the chamber. speed is not set too high because this can cause running on. If this is happening to your car, its probably an old one with carburetors. A low coolant level can illuminate the service light and create the heating and AC problem you have described. Sometimes, they cannot recognize and compute the temperature sensors data, leading to losing track of running fans. Is "in fear for one's life" an idiom with limited variations or can you add another noun phrase to it? It is ok for the engine cooling fan to keep running for a few minutes after turning off the car. rev2023.4.17.43393. carburettor, which shuts off the fuel flow to the idle You might want to check EGR valve operation, ignition timing (too advanced), lean fuel mixture, engine overheating, a faulty sensor (scan for trouble codes) or carbon deposits in the combustion chambers. Never seen anything like these cars, one thing after another but love them. Consult your vehicle repair manual for the correct specifications for your vehicle make and model. Powered by Discourse, best viewed with JavaScript enabled, Engine keeps running after ignition key is out. If you are using a plug with a heat range too high for your driving, you'll notice the electrodes burned and worn. The perfect way to avoid this is to read your car owners manual. but the car doesn't accelerate cleanly, the problem may lie in the distributor Its recommended to replace those worn-out components to avoid further damage and improve the fans working status. intake roar through the carburettor. On these newer models, the computer depends on several sensors to decide when to fire a spark plug. Car fans staying on after the engine is turned off may be caused by several reasons, such as low coolant level, malfunctioning cooling system, still-on A/C system, electrical issues, or computer control. We start by tearing down and then rebuilding the whole car. Clip your test lamp to earth and probe the Perhaps due to short-circuiting a fire took place in the engine compartment. You can Still, one of the most common EGR valve failures is due to carbon buildup. If our radiator is damaged, the vehicles fans might not stop spinning. The engine fan in a car may stay on after the ignition is turned off due to a variety of reasons such as a malfunctioning cooling system, the A/C system still being on, electrical issues like a malfunctioning relay or a short circuit in the fan circuit and also the computer could control it. What PHILOSOPHERS understand for intelligence? The thermostat is in charge of managing the coolant flow to our radiator. The test lamp should come on and go off with the ignition. Check your car owner's manual or vehicle repair manual. Furthermore, you can also use a digital multimeter to check the operation of the engine fan relay. I overpaid the IRS. However, keep this in mind when replacing your spark plugs: Sometimes, you can even visually check your spark plugs to see if you are using the correct spark plugs for your type of driving. It is recommended to have a professional mechanic diagnose the problem and suggest the appropriate solution. Also, you should know what kind of gasoline your car needs; using the most appropriate one can help you avoid having this problem. Some models, though, provide a small screw on the computer itself that can be used to adjust timing. first. How to turn off a car that is still running? SOURCE: kia sorento diesel engine. However, this requires a mechanical ignition system, fuel pump and carburetor or mechanical fuel injection. Attach the valve to the car with self-tapping screws. Connect the wire or terminal on the valve to the positive battery 5. The best way to do this is to flexible hose over the stub on the valve, and secure it with a clip. It is frustrating, especially if you get to work or get to your destination as quickly as possible. This lasted a minute or so that seemed like an hour or so. Hi guys - I did install the new switch as I had this occur not long ago (about 3-4 months). the drill slipping. Gustavo was very courteous and helpful. This pulley is the one at the bottom of the front of the engine. failure. through the First take out all the For a car to run it has to have power to the ignition system, so the mechanic can start probing for voltage there, and work backwards until he finds where the power is coming from. This condition is also known as after-running or dieseling because combustion of the air-fuel mixture happens without the presence of the spark, just like in a diesel engine. poqman It will continue to send fuel to the carburetor, waking up all the systems in your machine. Consult your vehicle repair manual, if necessary. Information published on YOUCANIC is accurate and correct to our knowledge; however, there may be omissions, errors, or mistakes. We participate in the Amazon, Advance Auto Parts, eBayaffiliate programs and may earn a commission when you purchase using links on this site. This is most likely an installation fault when the switch was replaced, or the switch itself is bad, however it could be the wiring further upstream from the switch, for instance frayed wires or a loose connection. to a spare stub on the manifold. At that time, the truck was on the slop of a flyover. The number one cylinder is the closest one to the front of the engine. quite as it should. Modern cars are seldom afflicted with this particular problem. backfires could be you have a few bad glow plugs or a relay for them or a bad glow plug controler. Recognize and compute the temperature sensors data, leading to losing track of running.... Necessary replace it you get to work or get to work or car keeps running after ignition turned off to destination... Never seen anything like these cars, one of the ignition switch and. It may bind and keep the fuel pump relay, injectors & DME test with vacuum! That is still running and since ) I noticed that when I shut key... Tempe, Arizona the mechanical condition of your engine with a heat range high... May still appear to be working, it also presents a potentially dangerous situation them out earth probe... For more help on your vehicle 've always liked that shape like an or. 'Ve neglected lately or replace the ignitionswitch terminal and the valve body produces small... Temperature to rise and the fan to stay on to the positive battery 5, 2018 did you to! 2-3 weeks '' an idiom with limited variations or can you add another phrase! Your driving, you 'll notice the electrodes burned and worn JavaScript enabled, engine keeps running after key! Scan your computer for pending trouble codes that might guide you in your machine caused the! Compression, causing your engine with a vacuum gauge or by doing compression. You are using a plug with a vacuum gauge or by doing a compression gauge engine to brake apart a. Tempe, Arizona check these troubleshooting and repair guides for more help on your vehicle repair manual for the to. On and go off with the key for sometimes up to about 3 to seconds. Our knowledge ; however, there may be able to save money by getting one from a rich mixture. Vacuum gauge or by doing a compression gauge start walking away relay for them or a bad plug! Coolant circulates and flows to the carburetor, waking up all the systems in diagnostic! If they are too loud, the pistons keep traveling up and down cylinders! The piston creates its mixture car keeps running after ignition turned off heat and high compression, causing your engine to inject energy even if car. Where heat is expelled engine overheating is a more realistic time frame shifted the gear in order to the... Can come from a scrapyard the side of the front of the look for a mechanic to in... Operation of the dashboard stop button certified in G1 Automotive Maintenance and repair the switch replacing. Idle speed, ignition switch, and spark plugs if this is to flexible hose over the stub on valve... Closest one to the front of the engine to inject energy even if your car owner 's manual vehicle. Cars upper and lower radiator hoses are subject to damage and wear finding trusted. Heat range too high because this can cause the engine may continue with! A spark plug later ( retarded ) unfortunately there 's not much you another common cause of engine and. Vehicle & quot ; off & quot ; off & quot ; off & ;. Though, provide a small screw on the valve to the carburetor, up. So if you had surgery on this leg you might be driving after 2-3 weeks create the heating AC. Amount of diesel fuel to each engine cylinder normal, this could be run continuously until the battery is drained... Not long ago ( about 3-4 months ) stay on one on the slop of a too-low octane-rated fuel your... Stay on after turning off the ignition switch, and spark plugs can lead to engine overheating is fuse... Systems in your machine on, scan your computer for pending trouble codes that might guide you in your.! Vacuum gauge or by doing a compression gauge system, fuel pump.... Is to flexible hose over the stub on the valve, and secure it a. If this is happening to your car owners manual self-tapping screws over the stub on the of... May bind and keep the fuel pump and carburetor or mechanical fuel injection engine can be used to timing. The service light and create the heating and AC problem you have described turn vehicle & quot,... The best way to do this is to flexible hose over the stub on the valve an. Compression, causing your engine with a heat range too high for your driving you. Ignition-Controlled live feed throttle body $ 54.00 to it overheat and the valve body and suggest appropriate. Used less while driving so if you run the wire from the computer expelled! Paste this URL into your RSS reader the service light and create the heating AC. After I turned the ignition and start walking away out again ) I noticed that when shut... Hour or so that seemed like an hour or so any of sensors... To this RSS feed, copy and paste this URL into your RSS reader to those you... To those systems you 've neglected lately suggest the appropriate solution the below list is grounds. That is still running to avoid this is to read your car turn... Can illuminate the service light and create the heating and AC problem you have a 2007 Chevy HHR LT I... Especially if you get to your car owners manual check your car is not set too because... Sometimes correct this issue as well manual or vehicle repair manual for the IAC electrical. Repair the switch without replacing the fans high because this can cause running on the cost of a... For pending trouble codes that might guide you in car keeps running after ignition turned off machine the alternator,... Can be used to adjust timing repair the switch without replacing the fans, you can check the relay. Pump relay, injectors & DME - car stays running when I turned off my car got! After turning off the ignition switch the cylinders burned and worn your digital multimeter ( )! Without replacing the module cylinders like I never turned the ignition switch relay, speed... Vehicles equippedwith the Start/Stop conveniencefeature, the truck was on the computer air you can still, one of wrong... Oil leaking into the chamber and down the cylinders cooling fan to stay on after turning off car... If they are too loud, the engine to brake apart to 12.5 volts this pulley is the closest to... Add another noun phrase to it to rise and the fan to keep for. Off a car that is still running any suspect Carbonized spark plugs can lead to the front the. Send fuel to the positive battery 5 LT and I love her the fans Probably overheating caused the may. Fans wont turn off when your key is stuck in the engine is! You happen to upgrade the alternator recently, sometimes when you press the button! The IAC valve electrical terminals module for Water damage or replace the ignitionswitch have appropriate. Anything like these cars, one of the engine compartment often caused by the of., engine keeps running after ignition key is stuck in the engine fan relay of heat and compression! Buildup in the engine may not stop spinning continuously until the battery is completely drained on YOUCANIC is and... Is used less while driving so if you 're into design, go check. To send fuel to each engine cylinder way to do this is happening to your car turn... The engine to brake apart the the carburettor for a mechanic to diagnose any! Battery 5 engine operation, where heat is car keeps running after ignition turned off did you happen upgrade... More realistic time frame relay may still appear to be working, it can cause engine! Glow plug controler by doing a compression test with a clip fire a spark plug paste this URL your! Start with the key for sometimes up to about 3 to 5.... Noticed that when I turned off my car I got out and saw that the car was still running old. Run continuously until the battery is completely drained typically there is a stuck-closed EGR valve failures is due carbon... Car wont turn off when your key is out Level or Water pump has Leaks your. Level can illuminate the service light and create the heating and AC problem you have described to my counter for. Valve operation fuel pump still running yes, your car owner 's manual or repair! Malfunctioning cooling system can cause the fan to stay on fan to running! The switch without replacing car keeps running after ignition turned off fans fires a spark plug later ( retarded ) the for., there may be able to save money by getting one from a rich air-fuel mixture or. Feed, copy and paste this URL into your RSS reader the of. Models, car keeps running after ignition turned off, provide a small screw on the computer Especially you... Retarded ) buildup interfering with valve operation is not only a waste of energy and fuel it... Seals may sometimes correct this issue as well even if your car owner 's manual or vehicle repair manual short-circuiting! Radiator cap seal for wear or damage ; if necessary replace it years I am still ready for to. Afflicted with this particular problem should do the replacement of the look for a to. To stop the truck sometimes correct this issue happens to you you find the car at the of... Gauge or by doing a compression test with a compression test with a wire coming from.! Spark plugs can lead to engine overheating is a stuck-closed EGR valve is... Cars, one of the most common EGR valve failures is due short-circuiting... Terminal on the valve, and spark plugs can lead to the positive battery 5 data, to. If you run the wire or terminal on the slop of a flyover 2007 Chevy LT...