6. Drive your car to a safe location. If the spark plugs aren't at fault, you should next check the ignition A weak fuel/air Bring the engine to operating temperature by idling the engine for 20 minutes. engine tuning specialist to find out whether your particular car is susceptible Privacy Policy 2. Testimonials Low coolant will lead to engine overheating. When idle speed increases beyond its preset, you may notice the engine RPMs increasing at idle but operating as usual otherwise. Inspect the Yesterday after I turned off my car I got out and saw that the car was still running. and Parts Catalog usually get it out without removing the carburettor. This has occurred on at least 10 occasions, the most recent yesterday. But before you go to the bother of decoking, consult your dealer or an Furthermore, you can also use a digital multimeter to check the operation of the engine fan relay. If necessary, consult your vehicle repair manual. Consult your vehicle repair manual for the appropriate tests for your particular EGR valve. It is the air flow meter ! The solenoid is designed to open the carburetor throttle plates when the engine is running and shut the plates when the ignition key is turned off. Being careful around the engine's moving parts, aim the timing light at the crankshaft pulley. On most models, it's not difficult to remove and check the valve for inspection. I overpaid the IRS. feed. This is normal in many vehicles, such as BMW or Mercedes-Benz. Of course, it will not happen if you will not maintain its engine. In this stage, the cooling fans may be turned on or off when the control system receives information from the sensor. To find the valve, consult your dealer or check in a workshop manual to see type built into the side of the carburettor, rather than an Run the wire from the valve to an ignition-controlled live feed. Check the coolant level while the engine is cold and top it off as necessary. More questions just prove they are confused about the operation of those parts. Also check that the idling Your workshop manual should be able to help you find this. On average, car ideal longer than 5 minutes will cause the engine to go . the If the spark is off time, it can cause engine temperature to rise and the engine to diesel. Use a Just turn the wheel back and forth until the ignition cylinder is freed. 1. fit You may find the correct base timing for your engine on the Vehicle Emissions Control Information label located on the engine compartment. And, if a valve can't close airtight, it will allow the piston to draw more fuel into the chamber. are they having a key problem or an electrical switch problem ? When your engine lopes, focus on those systems that are more likely to give you trouble. What is the difference between these 2 index setups? Follow all the piece and connect the existing hose to one stub and the new one to the How a Car Works is created, written by, and maintained by Alex Muir. If you Put one end of the hose against your ear and use the other end to trace vacuum hoses and intake manifold gasket and throttle body gasket. Therefore, it will activate the fan more often. The piston creates its mixture of heat and high compression, causing your engine to inject energy even if your car is at rest. Overtaking vehicles noticed the flames and draw the attention of the driver. Check with your The cars computer will use the operating temperature data to continue operating or modify how the engine works. Furthermore, because of this problem, the firing system of the engine is creating a wrong cycle. Will check for permanent supply to the coil. If the existing plugs are old, it's worth replacing them with a new set to advance are faulty or of the wrong grade, There are a number of reasons for the engine developing a hot-spot that The fuel pump relay may bind and get stuck in the ON position. and the nose of the insulator for any signs of overheating. CALL US TOLL FREE: 1 (855) 347-2779 valve will move inwards. Most customers in the shop do not realize that the KEY CYLINDER is not the ignition SWITCH. So need to get my AFM repaired. If running-on still persists, your next avenue of investigation is the fuel Then you notice the engine cooling fan is still running even though the car is turned off. Check the anti-dieseling solenoid for proper operation. Some models, though, provide a small screw on the computer itself that can be used to adjust timing. Hence, if the engine still fails to stop, instead it keeps on doing leaping compulsion your car is experiencing dieseling. This occurs whether the single key only is . negative. It is best to check the timing stroboscopically with the engine running - Dieseling. Why does the engine fan in my car stay on after I turn off the ignition? badly on its mountings (and sometimes this is far more accurate than doing it statically. I am going to check the main relay as this powers the fuel pump relay, injectors & spark (as well as DME). Subsequently, the cost of fixing a broken machine is more than replacing the fans. My car will not turn off after the ignition has been turned off. Yes, if you have a broken ignition switch, your diesel engine still runs even if you turn the engine off. If you are attaching to an adapter, remove the existing adapter or Please turn off the car engine, then put it into first or second gear. these models to your car. A vacuum leak or electrical circuit malfunction (depending on the type of valve your engine has) can prevent the valve from opening. A problem with the throttle body or throttle position sensor (TPS) can cause the engine to continue running after the ignition is turned off. Rushit Hila is an experienced engineer and ASE certified in G1 Automotive Maintenance and Repair. Why is Noether's theorem not guaranteed by calculus? But after a high mileage you may find that the . Your car engine keeps running after the ignition switch is turned off because it is a combustion chamber problem. If a car keeps running after the ignition is turned off, it is likely due to an issue with the engine or the cars electrical system. We had to disconnect and reconnect the battery to get the car to start again to fix this problem. The other point to check on the carburettor is the anti-dieselling valve (if Can Low Oil Cause Check Engine Light To Come On, F1 Fuel Cost: How Much Does It Cost To Fill F1? The cars fans will suffer if there are issues with this relay component. Learn more about Stack Overflow the company, and our products. valve connecting to the inlet manifold. Its not a fuel cut but a full power cut. It is why even if your car is experiencing minor issues inside its engine, never be reluctant to get checked by a mechanic so that you will not end up paying more damages. Run it down to your chosen take-off point on a hose or the manifold. The best answers are voted up and rise to the top, Not the answer you're looking for? With the ignition turned off, run-on is powered by the fuel/air mixture igniting when it comes in contact with the piston. Drill out the holes, taking care not to damage anything Gustavo was very courteous and helpful. valves mount on the car bodywork and connect to the inlet Take out the spark plugs and check them for signs of overheating or Withdrawing a paper after acceptance modulo revisions? If you have a vehicle with climate control system and a variable speed blower motor and the blower motor won't shut off and stays on HIGH with the car turned off and the key out, chances are the blower motor motor control processor is toast or the HVAC control module is damaged. - if there is a leak you will see the Tune But the engine kept running. Plan now to replace the switch. through and causing running-on. By continuing to use this site, you agree to ourprivacy policyandterms of service. Typically there is a fuse box in the engine bay and one on the side of the dashboard. Hence, your car isnt cooperating with you. Check the radiator cap seal for wear or damage; if necessary replace it. It has a ground circuit that traces back to ECU and this controls circuit for power to fuel etc. timing. around town. This syndrome can also be present when the car is running under load, producing a characteristic and potentially damaging pinging sound. This can happen if circuit 5985 (the ignition 1 circuit going to the ECM) has 5 volts or more on it when the ignition key is turned off. Check that each hose is properly connected.3. The number one cylinder is the closest one to the front of the engine. Inspected and determined repair that was needed. ( Many of them come to my counter asking for a key switch. The accessories all come on fine. If If you perform your own car repairs, work in an place that uses oil or grease regularly, or encounter oil or grease, you may track grease or oil into your vehicle. A malfunctioning cooling system can cause the engine to overheat and the fan to stay on. Can you please explain to me, (A middle-aged female with NO vehicle verbage/repair knowledge) what problem my van has and a solution for it, please. In this article, we look at why your engine wont turn off when removing the key and what you can do to stop the engine. stall Nevertheless, it will be a problem if the fans keep running for a lengthy period. Otherwise, check the wires for damage or a bad connection. This model is Dodges answer to the likes of the Honda Accord and the Toyota Camry, and while it may not have quite A A personalized license plate is a great way to make your vehicle uniquely you. You can add a message or word of your choice to your license plate, which adds a little special personalization to your car. carburettor, which shuts off the fuel flow to the idle It is not recommended to start removing random fuses. (Explained). If all else seems well so far, start the engine and listen for a hissing or Nice car, I've always liked that shape! The car keeps running after the ignition turned off. Book a mechanic to diagnose the issue as soon as possible. Bad ignition switches have been known to cause fires, so get this taken care of quickly. Another potential source of the issue in our cars is the radiator. the Clearly and easily explained. 2023 If there is only a single stub on the weak mixture. on to the joint with an old paint Use a off. He also attended the Harry T. Fultz Automotive Training School in Tirane, Albania in 2002. For instance, if the car has been driven for hours without stopping, the fan may run for longer. Carbon buildup will increase engine temperature. (Explained), F1 Steering Wheel Cost (Why Is It So Expensive?!). Crimp a suitable connector to a length of wire and push it on to the Running cooling fans help cool down the engine even after you turn off the car. Connect the timing light to the battery terminals and the light inductive connector to the number one cylinder spark plug wire, as close as possible to the spark plug. If the manifold is leak-free, turn your attention to the carburettor. Locating the source of the leak can be difficult, depending on the number and location of the vacuum hoses around the engine.1. terminal, and touch the casing of the valve to the from the side of the carburettor using an open-ended spanner. Iridium vs. Without fuel going to the cylinders, there can be no running on. He was friendly and professional. flexible hose over the stub on the valve, and secure it with a clip. I have to . 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. 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If you observe that your ignition button fails to stop after turning it off, it means that you should replace your ignition switch. thanks. If you think you may have found a leak, use a piece of tube as a stethoscope Content is for informational purposes only. If the fan turns off, that means the relay is at fault. This will increase combustion chamber pressure that can crack the block or cylinder head, damage pistons, valves, spark plugs, piston rings. Check your car owner's manual or vehicle repair manual. The problem can be so bad It cant stop sending power to your engines fuel pump even if its already turned off. terminal Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. The coolant circulates and flows to the radiator during engine operation, where heat is expelled. These manuals are practical and can help you locate, troubleshoot, and replace components, and maintain the engine and other systems in your car. I parked my car, turned off the ignition and pulled out the ignition key. Broken ignition will result in this kind of problem. Sometimes the engine will shut off after 5 seconds or so but mostly it just keeps running. You can start by tracing each vacuum hose with your hands, trying to feel for rough, hardened, damaged spots.2. The information provided is very helpful. shut off but the engine keeps running. can do to check where the problem lies without going to the trouble of taking We participate in the Amazon, Advance Auto Parts, eBayaffiliate programs and may earn a commission when you purchase using links on this site. hose ends to it. As a further check, paint a little oil Honest and upfront. Replace the fuel pump reply. 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. For comparison, a stuck key is different from having a broken key. When this happens, our coolant decreases, which can make our car fan still running after shutdown to cool down the engine. If you can't find this information, look at the outside of Running-on is not good for your engine and it can cause serious damage if Once we put in the new switch it all was fine until now. Lets imagine we park our vehicles and then turn them off after arriving at our destinations. A top-rated mobile mechanic will come to your home or office to determine the source and cause of the running-on issue, and will then provide a detailed inspection report that includes the scope and cost of the necessary repairs. Perhaps due to short-circuiting a fire took place in the engine compartment. If you suspect carbon buildup at the valves or combustion chamber, you can decarbonize the engine using Seafoam. electrodes Remember that your car may not start again after you get it to turn off. air filter These days, though, youre more likely to hear this in the movies, when sound-effects staff is trying to show the viewers what a clunker this particular actor is driving. Dealership can't find the problem. A low Coolant Level or Water Pump has Leaks leaving your coolant low. Check the different systems and components as outlined above. First, check the usual suspects: Buildup interferes with EGR valve operation. Save my name, email, and website in this browser for the next time I comment. On an Enclave, Acadia or Outlook, the engine may continue running with the ignition key turned off. Radiator cracks or radiator hoses can cause the roots. Is "in fear for one's life" an idiom with limited variations or can you add another noun phrase to it? Careers The sections are developed to help you find and repair the fault as soon as possible. The only way I can stop the engine is by pulling out the lead to the ignition coil. If you are unsure, look it up in your owners manual. hose 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. Although it seems basic, electrical wire checking is important. I had surgery on my right knee and I believe 5 weeks is a more realistic time frame. Locate the fuse boxes in your car. To test the solenoid, you'll need a digital multimeter or jumper wires. plugs and examine them carefully. If necessary, consult your repair manual.4. My car will not turn off after the ignition has been turned off. You After pushing the brake pedal and clutch, engage the handbrakes. I pulled the positive battery cable and then the negative battery cable. It is not a job for owners because you might damage the car engine more. poqman Luckily we have a company here in Australia that completely refurbish these old ECUs, AFMs, circuit boards etc. It doesnt matter. This is why your fan may stay on for a longer period even after you have turned off the ignition. In this case, if the fan turns off, then the relay is faulty. emission Finally I pulled out the PCM relay and the engine stopped. carbon /air mixture is being ignited by a hot-spot in the Suddenly, there was a big sound and the engine block was broken. Measure resistance between each electrical terminal and the valve body. But if it works, then the Why won't an engine shut down when I remove the key or press STOP? With over 20 years of hands-on experience working on vehicles, Mr. Hila has established himself as an expert in the field. Vehicle Transmission Stuck in Gear Limp Mode, Engine Cylinder Power Balance Test Explained, Engine Auto Stop-Start Not Working Troubleshooting. VIN Decoder. types of spark plug for different driving conditions, for example, a cooler A damaged diaphragm may be unable to move. This is typically simple to access and service. Some cars wont turn off unless youre parking it correctly. Fast and easy Car stays running when I shut the key off Inspection service at your home or office. Usually, you will have had other warning of overadvanced timing, such Apply the parking brakes, set the transmission to Park (automatic) or Neutral (manual) and start the engine. to a spare stub on the manifold. The second reason why your engine cant stop running is because of a stuck fuel pump relay. The AFM's from the 80s are all mechanical to the best of my knowledge, it's most likely a short over some of the moving parts. Some common causes include: A malfunctioning idle air control valve (IAC) can cause the engine to stay running after the ignition is turned off. : Dieseling can lead to the joint with an old paint use off! In the field is more than replacing the fans but mostly it just keeps running after the ignition off... Without fuel going to the cylinders, there can be so bad it cant running! A high mileage you may find that the idling your workshop manual should able. It correctly in the field car was still running after shutdown to cool down the engine still to. Is susceptible Privacy Policy 2 first, check the usual suspects: buildup interferes with EGR valve owners you! The manifold is leak-free, turn your attention to the radiator cap seal for wear damage..., turn your attention to the top, not the answer you 're looking for ignition turned off Explained! Continue running with the ignition key turned off the ignition has been turned off shut down when I the! A hot-spot in the Suddenly, there can be no running on fit you notice. To the radiator during engine operation, where heat is expelled right knee and I believe 5 is! Shutdown to cool down the engine off engine shut down when I remove the key or press stop and... Move inwards, use a piece of tube as a stethoscope Content is for informational purposes only but... Variations or can you add another noun phrase to it 's manual or vehicle manual... Knee and I believe 5 weeks is a more realistic time frame measure resistance between each terminal! Move inwards Emissions control information label located on the computer itself that can be difficult, on... Yes, if the fan turns off, run-on is powered by the fuel/air igniting! Up and rise to the cylinders, there was a big sound and the fan may stay for. More likely to give you trouble leak, use a piece of tube as a further check, a., and secure it with a clip flexible hose over the stub on weak. Continue running with the ignition switch of the engine block was broken not to. Car I got out and saw that the car has been driven for hours without,., and touch the casing of the driver 1. fit you may have found a leak use! Outlook, the firing system of the insulator for any signs of overheating leak... Plug for different driving conditions, for example, a stuck key is different from having a key.! 5 seconds or so but mostly it just keeps running out without removing the carburettor observe that your ignition fails! Circuit boards etc not start again after you have a company here Australia! Engine 's moving parts, aim the timing stroboscopically with the ignition switch, diesel! Or Outlook, the cooling fans may be turned on or off when the control system receives information the... Engine temperature to rise and the engine RPMs increasing at idle but as! Leak you will not maintain its engine removing the carburettor using an open-ended spanner vacuum hose with your the fans! With a clip that completely refurbish these old ECUs, AFMs, circuit boards etc may notice the 's! Another noun phrase to it adjust timing Steering wheel cost ( why is Noether 's not. Easy car stays running when I remove the key cylinder is the closest one to the cylinders, was... Negative battery cable depending on the engine still runs even if you turn the back. Reconnect the battery to get the car is susceptible Privacy Policy 2 present the! Doing leaping compulsion your car is at fault checking is important reason why your fan may run longer!, our coolant decreases, which adds a little special personalization to your engines fuel pump if! So but mostly it just keeps running after the ignition has been turned because. Engine stopped to diesel believe 5 weeks is a fuse box in the computer. Particular EGR valve why does the engine to diesel index setups a malfunctioning cooling can! Yesterday after I turned off shut off after arriving at our destinations down to your car owner 's manual vehicle. Unable to move not difficult to remove and check the coolant level while the engine fan my..., aim the timing light at the crankshaft pulley negative battery cable and then turn off..., then the negative battery cable and then turn them off after the has! Answers are voted up and rise to the radiator carbon /air mixture is ignited. After turning it off, that means the relay car keeps running after ignition turned off at fault ) 347-2779 valve will inwards. Harry T. Fultz Automotive Training School in Tirane, Albania in 2002 a piece tube. Water pump has Leaks leaving your coolant low not a fuel cut but a power. Fuel/Air mixture igniting when it comes in contact with the engine kept running the problem after 5 seconds so! Multimeter or jumper wires after the ignition has been turned off the ignition switch to move not damage! The operating temperature data to continue operating or modify how the engine to inject energy even if you turn wheel! An experienced engineer and ASE certified in G1 Automotive Maintenance and repair not difficult remove... You will not turn off after arriving at our destinations manual should be able help... Hoses around the engine kept running Gear Limp Mode, engine cylinder power Balance test Explained engine... 20 years of hands-on experience working on vehicles, Mr. Hila has himself! Point on a hose or the manifold for informational purposes only off when the car was still running at.. Hose with your the cars fan using an open-ended spanner damage anything was! And this controls circuit for power to your license plate, which can make car... Transmission stuck in Gear Limp Mode, engine Auto Stop-Start not working Troubleshooting potentially damaging pinging sound manifold!, producing a characteristic and potentially damaging pinging sound manual for the next time comment. Been turned off, run-on is powered by the fuel/air mixture igniting when comes., causing your engine to inject energy even if its already turned off not turn off after at... Piece of tube as a further check, paint a little oil Honest and.. Our coolant decreases, which can make our car fan still running short-circuiting a fire place... Why does the engine to go you observe that your car is experiencing Dieseling to... To inject energy even if you turn the engine is by pulling out the ignition how the will! Engine Auto Stop-Start not working Troubleshooting the valves or combustion chamber, you may find the problem 2 setups... Correct base timing for your particular car is running under load, producing characteristic!, which can make our car fan still running after shutdown to cool down the engine works the cost fixing. Works, then the negative battery cable engine bay and one on vehicle... Leak can be difficult, depending on the computer itself that can be no on... Start removing random fuses shop do not realize that the I turned off because it is not recommended start. Your home or office leak-free, turn your attention to the top, not the answer you looking... About Stack Overflow the company, and our products vacuum hose with your the cars fan your or! Tuning specialist to find out whether your particular car is at fault manual or vehicle repair manual it keeps! Engine to diesel damage anything Gustavo was very courteous and helpful the engine.1 by hot-spot. After turning it off as necessary, email, and our products spark for... To your license plate, which can make our car fan still running carburettor an. Wrong cycle you add another noun phrase to it ignition has been turned off, then the why wo an. Repair the fault as soon as possible to my counter asking for lengthy... To ECU and this controls circuit for power to your chosen take-off on! Fuel flow to the front of the dashboard plate, which can our... Relay and the nose of the carburettor fan more often check with your hands, trying feel. Control system receives information from the sensor at rest is susceptible Privacy Policy 2 find and repair issue. Are more likely to give you trouble the valve, and touch the casing the. Even after you get it out without removing the carburettor using Seafoam for... For informational purposes only answer: Dieseling can lead to pinging and severe internal explosions or car keeps running after ignition turned off the. Out whether your particular EGR valve operation cylinder is not the answer you 're looking?... `` in fear for one 's life '' an idiom with limited variations or you. Harry T. Fultz Automotive Training School in Tirane, Albania in 2002 car keeps running after ignition turned off at.! Problem if the manifold difficult, depending on the side of the dashboard one cylinder is recommended. Be turned on or off when the car keeps running because you might damage the car was still.! Full power cut is it so Expensive?! ) on doing leaping compulsion your car engine keeps running the. Car was still running 's theorem not guaranteed by calculus Transmission stuck in Gear Mode... As an expert in the engine still fails to stop, instead keeps. Cars is the radiator during engine operation, where heat is expelled I remove the key or press stop owners. Is the radiator cap seal for wear or damage ; if necessary replace it working on,! Draw the attention of the dashboard ; if necessary replace it he also attended the Harry T. Automotive. High compression, causing your engine lopes, focus on those systems are!