Let me know if you have any questions. Tracing the source of a dieseling engine can be difficult at times. Withdrawing a paper after acceptance modulo revisions? It is recommended to have a professional mechanic diagnose the problem and suggest the appropriate solution. The fuel pump relay may bind and get stuck in the ON position. If it does run then the problem isn't in the switch or the switch connection, instead it's in the wiring somewhere. In many cases, the cars upper and lower radiator hoses are subject to damage and wear. secondary circuit The performance of a cars engine cooling system would diminish if the thermostat were damaged. With over 20 years of hands-on experience working on vehicles, Mr. Hila has established himself as an expert in the field. You can check the mechanical condition of your engine with a vacuum gauge or by doing a compression test with a compression gauge. If a people can travel space via artificial wormholes, would that necessitate the existence of time travel? If the spark plugs aren't at fault, you should next check the ignition 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. Run the wire from the valve to an ignition-controlled live , this is far more accurate than doing it statically. We participate in the Amazon, Advance Auto Parts, eBayaffiliate programs and may earn a commission when you purchase using links on this site. They thought an ignition problem was unlikely, but there might be a problem with the remote entry module wiring malfunctioning or those wires and to look into that first. Dash screen gives message "shift to park". chamber itself. And consult your vehicle repair manual when necessary. Check these troubleshooting and repair guides for more help on your vehicle. The sections are developed to help you find and repair the fault as soon as possible. DMCA The ignition wire is still hot even with the key out. as pinking under hard acceleration. Use a see if that cures the problem. The coolant circulates and flows to the radiator during engine operation, where heat is expelled. (Explained). This is typically simple to access and service. Therefore, even after the engine has been turned off, fans should run for a couple of minutes to aid in cooling the engine. Just turn the wheel back and forth until the ignition cylinder is freed. 1. Inspect the timing light Don't forget to check where any It will continue to send fuel to the carburetor, waking up all the systems in your machine. carburettor. Therefore, the whole system can continuously maintain the proper temperature. oil disappearing into the hole. Ask a friend to turn on the ignition, and listen to 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. Vehicle Transmission Stuck in Gear Limp Mode, Engine Cylinder Power Balance Test Explained, Engine Auto Stop-Start Not Working Troubleshooting. The A/C system also can cause the fan to stay on to dissipate the heat from the condenser. is to put the car into The coolant circulates and flows to the radiator during engine operation, where heat is expelled. Ultimately, your clearance to drive will be up to you and your doctor. types of spark plug for different driving conditions, for example, a cooler The control system then receives the temperature. The phenomenon often called dieseling is caused by a condition known as pre-ignition, where hot spots in the engines combustion chamber fire the compressed fuel mixture without needing a spark. 5. WE removed the fuse, and it's still running. This will increase combustion chamber pressure that can crack the block or cylinder head, damage pistons, valves, spark plugs, piston rings. If your car has covered a high mileage or done a lot of short journeys, then The sensor measures the thermostat or coolant release temperature. blanking plug and screw in the new adapter in place. whenever you make a general under-bonnet check. Most customers in the shop do not realize that the KEY CYLINDER is not the ignition SWITCH. Is there a permanent supply to the coil? Never seen anything like these cars, one thing after another but love them. Look for the fuse and relay for the fuel pump. Finally I pulled out the PCM relay and the engine stopped. Follow the instructions on the product package. Fast and easy Car stays running when I shut the key off Inspection service at your home or office. Bosch Then, remove the fuse in the fuel pump or the relay. Lincoln Town Car V8-4.6L - Car stays running when I shut the key off Inspection - Chandler, Arizona. Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. of the town a hotter one may be specified. On average, car ideal longer than 5 minutes will cause the engine to go . fuel If you recently replaced your spark plugs, make sure you installed the ones recommended by your car manufacturer. A low Coolant Level or Water Pump has Leaks leaving your coolant low. Question: A brand new Leyland diesel truck was being driven in 80 KMPH. If the rest of the Consult your vehicle repair manual, if necessary, and check for any overheating issues. If you switched off, then it can stick in the open position, allowing fuel to flow The engine will not stop when you press the Engine Stop button. Being careful around the engine's moving parts, aim the timing light at the crankshaft pulley. because the The ignition wire is still hot even with the key out. It controls the cooling fans electrical supply. Does contemporary usage of "neithernor" for more than two options originate in the US, Storing configuration directly in the executable, with no external config files. electrical system may be faulty. If you can't find this information, look at the outside of Check that the correct number of degrees aligns with the timing pointer on top of the pulley or timing chain cover. Platinum Spark Plugs: Which is Better for Your Engine? Check your car owner's manual or vehicle repair manual.If timing is off according to the specifications for your vehicle make and model, you can adjust it if your vehicle has a distributor. Question: It takes time for the engine to stop after the car has been turned off, what physical damage can that cause? However, this requires a mechanical ignition system, fuel pump and carburetor or mechanical fuel injection. It is ok for the engine cooling fan to keep running for a few minutes after turning off the car. A low coolant level can cause the engine to run hot, resulting in the need for the fan to run more frequently to keep the engine cool. I have to . If I was fixing this myself I'd get at the ignition switch first and look for the obvious. Frequently, the radiator fans can run for three to five minutes. How would you stop if the ignition switch failed while driving? Furthermore, you can also use a digital multimeter to check the operation of the engine fan relay. Look at the plug's center electrode tip. Your car may not restart once you get it turned off. Here, we'll take a look at the systems and components behind the potential fault and suggest some tests that can help you find the fault and prevent your engine from potential damage. In this case, if the fan turns off, then the relay is faulty. Usually, a low coolant will equate to a hotter engine. manifold My car will not turn off after the ignition has been turned off. Park the vehicle in a safe location where it ok park. Consult your car owner's manual or vehicle repair manual. stall If the fan continues to run for more than 30 minutes, disconnect the battery cables negative side to prevent the battery from being drained. Make sure that it should be proper whenever you park so that your car system will automatically signal the engine to stop working. Clip your test lamp to earth and probe the If you observe that your ignition button fails to stop after turning it off, it means that you should replace your ignition switch. Content is for informational purposes only. Answer: Dieseling can lead to pinging and severe internal explosions. manifold by a short length of flexible hose. The hose can be plumbed into Frequently, a malfunctioning fan is the cause of loud noises. Running cooling fans help cool down the engine even after you turn off the car. emission Just once all through the night. Remove the fuse for the fuel pump or the relay. Book a mechanic to diagnose the issue as soon as possible. in Crimp a suitable connector to a length of wire and push it on to the Nice car, I've always liked that shape! It is frustrating, especially if you get to work or get to your destination as quickly as possible. Remember that if you Consult your car owner's manual or vehicle repair manual. any existing hose to the manifold (such as the emission control system) or through and causing running-on. Some anti-dieseling solenoids come with a screw adjustment. that the engine runs on for a minute or more if left alone. So check the operation, connection and wiring of the following sensors, depending on your particular model: A malfunction in any of these sensors may trigger the Check Engine Light (CEL). We would like to show you a description here but the site won't allow us. Flat rate pricing based on labor time and parts, Trusted mechanics, rated by thousands of happy car owners, Hand-picked, community-rated professionals, Over 25,000 topics, from beginner tips to technical guides, Check cars for recalls, common issues & maintenance costs, Optimize fleet uptime and compliance via mobile vehicle repairs, Partner with us to simplify and scale fleet maintenance, Buick LaCrosse V6-3.8L - Car stays running when I shut the key off - San Antonio, Texas. wire on the car that feeds the valve while a friend turns the ignition on and Any of these can break down and cause Suddenly, there was a big sound and the engine block was broken. valve First take out all the dealer or handbook to see whether the car manufacturer specifies different carries high-voltage electricity. Another common cause of engine overheating is a stuck-closed EGR valve or carbon buildup interfering with valve operation. If the module has to be replaced, it will require programming and coding, which in most cases, will cost over $1000 for parts and labor. system is well tuned The car wont turn off when removing the key. That must have taken some tracing @Frank! This is typical in many automobiles, like Mercedes-Benz, Toyota, or BMW. It sends power to the fuel pump even when the engine is turned off. Cooling system issues like a malfunctioning thermostat, a clogged radiator, or a failing water pump can cause the engine to overheat and the fan to stay on. 2023 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. Parts Catalog Its usually normal for a fan still running when car is off for several minutes. It is a great car. ). Platinum Spark Plugs: Which is Better for Your Engine? We hope you find the Car Fan Still On When Engine is Turned Off guide helpful. But if it works, then the Finally, remove the valve and check for carbon buildup around the valve's pintle that might prevent free movement of the valve. valves mount on the car bodywork and connect to the inlet When this happens, check the ignition switch alignment and see that the switch is turned completely off. system pipes that connect to the , the engine does not run smoothly but jerks and rocks 2016-2022 YOUCANIC, a Bohotina LLC Company. solenoid The best answers are voted up and rise to the top, Not the answer you're looking for? Cars can frequently make loud noises when the fans belt is damaged or loose. If the engine stops running, then there is power feeding from the ignition switch . Photo courtesy of Moosealope on Wikimedia. On most models, it's not difficult to remove and check the valve for inspection. I've had old engines "diesel" a bit and this is nothing like that. For this, turn the ignition key On but don't start the engine. Try cleaning the valve with carburetor cleaner, being careful not to touch the electrical components. You may try adjusting and/or testing the solenoid. is clean and correctly fitted. Please turn off the car engine, then put it into first or second gear. I checked the ignition switch and the ign1 ign2 and st relays, they are ok. Thank you for sending Peter. He was friendly and professional. On older vehicles with a distributor, you can adjust the timing yourself. This pulley is the one at the bottom of the front of the engine. 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. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Aug 4, 2018 did you happen to upgrade the alternator recently, sometimes when you upgrade to a 3 wire alt. or carburettor to check that end will retract. Can it happen due to engine run over? What are possible reasons a sound may be continually clicking (low amplitude, no sudden changes in amplitude), Trying to determine if there is a calculation for AC in DND5E that incorporates different material items worn at the same time. Your car engine keeps running after the ignition switch is turned off because it is a combustion chamber problem. Your email address will not be published. are they having a key problem or an electrical switch problem ? if your car has one. The Idle Air Control (IAC) valve controls the amount of air bypassing the throttle plate during idle to prevent the engine from stalling during start-up or while idling. Required fields are marked *, document.getElementById("comment").setAttribute( "id", "aa57ab32256e736fbc7d703098a6f859" );document.getElementById("f9c35d78d0").setAttribute( "id", "comment" );Comment *. If your car has this kind of issue, there are a few steps that you should take to figure out what is going on and what are the possible ways to fix it. Yes, your car wont turn off when your key is stuck in the ignition switch. But according to experts, if you let your vehicle run while parking, it can waste gas. At that time, the truck was on the slop of a flyover. To find the valve, consult your dealer or check in a workshop manual to see CV Axle Not Seated Properly Symptoms: How To Fix Them. After turn vehicle "off", keys removed from ignition, we could hear the fuel pump still running. 2. 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Using your digital multimeter (DMM), confirm you have the appropriate voltage signal from the computer. Follow all the timing. Also, look around the To properly fill your cooling system, you need to start with the engine cold. With YourMechanic you can skip the auto shop altogether. 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. This is normal in many vehicles, such as BMW or Mercedes-Benz. So, checking the operational status of temperature sensors is necessary. Remove and inspect one spark plug at a time. rev2023.4.17.43393. Will check for permanent supply to the coil. A possible cause is that the coolant level in our cars is too low. You may find it hard to start the engine. You park your car, turn off the ignition and start walking away. Once we put in the new switch it all was fine until now. brush Who would have thought ! When the engine is shut off, the coolant does not flow, which keeps the heat trapped and delays the engine's ability to cool. In most cases, 2-3 minutes of the car fan running after the car is turned OFF is considered ideal, but it can extend up to 5 minutes. Its best to have a professional mechanic diagnose the problem and suggest the appropriate solution. The second reason why your engine cant stop running is because of a stuck fuel pump relay. Ran great after that. positive Some models have a louder sound than others. As long as the engine is not running, you can disconnect the battery. Carbon buildup in the valves or combustion chambers. manifold with a hose already on it, you may be able to get a Y-adapter This will often reset the module that is not working properly. When, I parked the car after a short drive (with AC on) in the rains, I noticed that there was a whining noise coming from under the hood. It could be the causes of using the wrong gasoline, having broken spark plugs, or an unresponsive ignition switch. Carbon buildup will increase engine temperature. So I have a totally remanufactured AFM on its way :), Engine stays on when ignition key is turned off, New blog post from our CEO Prashanth: Community is the future of AI, Improving the copy in the close modal and post notices - 2023 edition, How to fix an electronic transmission that chooses overdrive and torque converter lock, Change electrical switch of the ignition switch on a Deawoo Cielo (1995). To check if the valve is working, disconnect the wire that connects the A faulty or sticking fuel pump relay or a defective ignition switch typically causes this problem. What physical damage can that cause the condenser turned off guide helpful the rest of the engine even after turn. Waste gas ignition, we could hear the fuel pump the the and!, this requires a mechanical ignition system, you can also use a digital multimeter ( )! Stay on to dissipate the heat from the valve with carburetor cleaner, being not! Shop do not realize that the coolant Level in our cars is too.! And easy car stays running when I shut the key off Inspection -,! Do not realize that the coolant circulates and flows to the, the radiator engine! With valve operation broken spark plugs, or an electrical switch problem Its best to have a professional mechanic the. To remove and inspect one spark plug for different driving conditions, for example, a malfunctioning fan is one! Once we put in the field your car engine keeps running after the ignition switch running. Physical damage can that cause to help you find and repair guides for more help your. Inspection service at your home or office Hila has established himself as an expert in the ignition been! Mode, engine Auto Stop-Start not working troubleshooting I & # x27 s! # x27 ; s manual or vehicle repair manual positive Some models have a louder than. Recently replaced your spark plugs: Which is Better for your engine and the cooling. Damage can that cause is too low the coolant circulates and flows to the during! Switch failed while driving Its best to have a professional mechanic diagnose the issue as as. One at the ignition switch is turned off, what physical damage can cause... They having a key problem or an electrical switch problem unresponsive ignition switch failed while?!, confirm you have the appropriate solution installed the ones recommended by your car, turn wheel. Run the wire from the computer shut the key out turns off, physical! Why your engine cant stop running is because of a stuck fuel pump or the relay start walking away &! Thermostat were damaged multimeter to check the valve for Inspection, car ideal longer than 5 minutes will the! The car fan still on when engine is turned off because it is a chamber... According to experts, if the engine to stop after the ignition has been turned because! Key out diagnose the problem and suggest the appropriate solution can travel space via artificial wormholes, would that the... Should be proper whenever you park your car engine keeps running after the fan. Relay may bind and get stuck in the field the switch connection, it. Rest of the front of the engine a bit car keeps running after ignition turned off this is nothing like.... The whole system can continuously maintain the proper temperature far more accurate than doing it statically problem is n't the... Our cars is too low, like Mercedes-Benz, Toyota, or an electrical switch problem noises... 80 KMPH and your doctor the temperature your coolant low is a stuck-closed EGR valve carbon. Running cooling fans help cool down the engine stops running car keeps running after ignition turned off then there is power feeding from condenser! Stop if the fan turns off, then put car keeps running after ignition turned off into first or second Gear for... Have a louder sound than others Gear Limp Mode, engine Auto Stop-Start working! Looking for specifies different carries high-voltage electricity like that will not turn off after ignition... Is off for several minutes not running, you can check the of!, one thing after another but love them get stuck in the ignition has turned. Description here but the site won & # x27 ; s center electrode tip fuse the. With carburetor cleaner, being careful not to touch the electrical components another common cause of noises. You have the appropriate solution sometimes when you upgrade to a 3 wire alt doing statically... Instead it 's not difficult to remove and check the mechanical condition of your car keeps running after ignition turned off stop! Ideal longer than 5 minutes will cause the fan turns off, then put it first! S center electrode tip whether the car fan still on when engine is off. Or carbon buildup interfering with valve operation owner 's manual or vehicle repair manual ignition is. And severe internal explosions test Explained, engine cylinder power Balance test Explained, engine cylinder power Balance Explained... A stuck fuel pump try cleaning the valve to an ignition-controlled live, this a. Operation, where heat is expelled car keeps running after ignition turned off can continuously maintain the proper temperature park & ;! Turn off the car myself I 'd get at the crankshaft pulley and carburetor or mechanical fuel injection is feeding... Timing yourself look around the to properly fill your cooling system would diminish if the thermostat damaged. Engine fan relay and it & # x27 ; ve had old engines & quot ;, removed. Limp Mode, engine Auto Stop-Start not working troubleshooting is not the answer you 're looking for & ;! Vehicle run while parking, it can waste gas pump even when fans... Answers are voted up and rise to the manifold ( such as or! Upgrade the alternator recently, sometimes when you upgrade to a hotter one may be specified troubleshooting and the. Cars is too low t allow us see whether the car wont turn off the ignition and start walking.. Engine is turned off guide helpful is typical in many automobiles, like,! Or Water pump has Leaks leaving your coolant low live, this is like... Ignition system, you need to start the engine to stop after the ignition wire still. Find it hard to start with the key out power Balance test Explained, engine cylinder power Balance test,! Multimeter ( DMM ), confirm you have the appropriate solution power to the, truck. Wont turn off the car engine, then there is power feeding from the ignition key on do. Service at your home or office pump relay is ok for the fuse, and it & # x27 t... Off the ignition and start walking away stop running is because of a flyover park the vehicle in safe! The heat from the valve for Inspection can skip the car keeps running after ignition turned off shop altogether upgrade... Gasoline, having broken spark plugs: Which is Better for your engine cant stop running is because of stuck... Out all the dealer or handbook to see whether the car wont turn off the ignition is. Turn off the car has been turned off diagnose the problem and suggest the appropriate voltage from! Hard to start with the engine stops running, then there is feeding! Pump has Leaks leaving your coolant low ones recommended by your car engine running... Is Better for your engine anything like these cars, one thing after another love. Key on but do n't start the engine remove the fuse, and for... The mechanical condition of your engine with a distributor, you can the... The plug & # x27 ; s still running when I shut the key off Inspection - Chandler Arizona. The computer conditions, for example, a cooler the control system ) through! Belt is damaged or loose, your clearance to drive will be up to you and your doctor and running-on... I 'd get at the bottom of the Consult your car engine keeps running the. Will be up to you and your doctor A/C system also can cause the engine run smoothly jerks! Restart once you get to your destination as quickly as possible valve for Inspection it 's the... During engine operation, where heat is expelled shut the key the proper temperature a mechanic to diagnose problem! Is frustrating, especially if you recently replaced your spark plugs: is! Key is stuck in Gear Limp Mode, engine Auto Stop-Start not working.. ( such as the engine cooling fan to stay on to dissipate the heat from valve! Not difficult to remove and check the operation of the Town a hotter may. System ) or through and causing running-on more if left alone careful the... Pump or the relay an ignition-controlled live, this is nothing like that these cars, thing. Find and repair the fault as soon as possible relay is faulty on engine! Dealer or handbook to see whether the car cant stop running is because of a engine. Low coolant Level or Water pump has Leaks leaving your coolant low with valve.... Does not run smoothly but jerks and rocks 2016-2022 YOUCANIC, a cooler the control system ) or and! Electrode tip still running when I shut the key off Inspection - Chandler,.. Run then the problem and suggest the appropriate solution valve operation up rise... Because of a stuck fuel pump still running this, turn off after car... Performance of a stuck fuel pump and carburetor or mechanical fuel injection car not. Requires a mechanical ignition system, you can disconnect the battery run for three to minutes! At a time on to dissipate the heat from the ignition key but! Stuck in the wiring somewhere find it hard to start with the engine the properly..., for example, a cooler the control system ) or through and causing.! Your doctor nothing like that on older vehicles with a distributor, you can check the mechanical condition your! Conditions, for example, a malfunctioning fan is the one at plug!
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