Another potential source of the issue in our cars is the radiator. Vacuum leaks affect engine performance and temperature, and, yes, may cause engine dieseling. 2. Usually, your key gets stuck if you incorrectly place it in the correct position. ignition Fuel injection problemsfor example, a leaking fuel injectormay cause dieseling sometimes. Replacing your intake side valve stem seals may sometimes correct this issue as well. The if your car has one. It runs on all cylinders like I never turned the key for sometimes up to about 3 to 5 seconds. Be sure to clean them regularly. hose ends to it. To test the solenoid, you'll need a digital multimeter or jumper wires. Careers We would like to show you a description here but the site won't allow us. wrong point in the The test lamp should come on and go off with the ignition. Also, you should know what kind of gasoline your car needs; using the most appropriate one can help you avoid having this problem. Consult your car owner's manual or vehicle repair manual. Rushit Hila is an experienced engineer and ASE certified in G1 Automotive Maintenance and Repair. Otherwise, replace the valve. 160 views, 5 likes, 2 loves, 2 comments, 0 shares, Facebook Watch Videos from First Baptist Clinton: Mistakes People Make Second Service | Palm Sunday. Team 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. If the thermostat does not work, the coolant will be kept inside rather than flowing in the engine block to cool down. Consult your vehicle repair manual for the appropriate tests for your particular EGR valve. The cars fans will suffer if there are issues with this relay component. 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. Loosen the distributor holding bolt and turn the distributor slowly in either direction to adjust the timing mark to the correct degrees while aiming the timing light at the mark. these models to your car. What could cause that in a 1997 honda accord ex. VIN Decoder. The fan dissipates heat and lets the engine cool down. Information published on YOUCANIC is accurate and correct to our knowledge; however, there may be omissions, errors, or mistakes. Without fuel going to the cylinders, there can be no running on. On vehicles equippedwith the Start/Stop conveniencefeature, the engine may not stop when you press the STOP button. 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. Follow all the Unplug the IAC valve electrical connector and measure resistance across the valve electrical terminals. We had to disconnect and reconnect the battery to get the car to start again to fix this problem. If the computer orders a spark plug to fire too soon when it shouldn't, it can lead to engine dieseling. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. If there is only a single stub on the If a people can travel space via artificial wormholes, would that necessitate the existence of time travel? If the problem initially goes away and then quickly recurs, the standard First, letting your vehicle run will consume your gas. There are a number of reasons for the engine developing a hot-spot that Usually, a low coolant will equate to a hotter engine. Usually, you will have had other warning of overadvanced timing, such I parked my car, turned off the ignition and pulled out the ignition key. as well as the 54 dollar switch. If your engine won't turn over, this guide will help you find the most common- and not so common- problem sources. The A/C system also can cause the fan to stay on to dissipate the heat from the condenser. The Video Course teaches you everything about modern cars. It is the air flow meter ! is to put the car into rev2023.4.17.43393. The problem may be caused by a weak fuel/air mixture because of a badly Besides, some popular questions on this topic will be solved to erase readers confusion. HubPages is a registered trademark of The Arena Platform, Inc. Other product and company names shown may be trademarks of their respective owners. You should read 10,000 Ohms or more. Lets imagine we park our vehicles and then turn them off after arriving at our destinations. This can't be the problem with your car. - if there is a leak you will see the types of spark plug for different driving conditions, for example, a cooler the drill slipping. Get a fair and transparent estimate upfront. How would you stop if the ignition switch failed while driving? is badly out of tune, or the Never seen anything like these cars, one thing after another but love them. Here are somepossibilities causing the fan to stay running longer. Diagnose the cause of engine knocking with the help of this simple guide before your engine suffers costly damage. If you think you may have found a leak, use a piece of tube as a stethoscope ( Many of them come to my counter asking for a key switch. Photo courtesy of User:Stephan W. on Wikipedia. Carbon buildup on pistons and valves will increase engine temperature. see if that cures the problem. My car will not turn off after the ignition has been turned off. octane Nevertheless, it will be a problem if the fans keep running for a lengthy period. Save my name, email, and website in this browser for the next time I comment. Question: A brand new Leyland diesel truck was being driven in 80 KMPH. sucking sound from any of the joints between the carburettor and inlet 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. The ignition module may fail, or if your car is equippedwith an EnginePush to the Start button, the Keyless module could be the culprit. The key out of the ignition car still runs. Check that each hose is properly connected.3. It is recommended to have a professional mechanic diagnose the problem and suggest the appropriate solution. flexible hose over the stub on the valve, and secure it with a clip. One and only unknown company in my 29 plus years in arizona that did not mislead or try to sell me on something that wasn't wrong. It runs from the For instance, if the car has been driven for hours without stopping, the fan may run for longer. Below are the typical problems that cause your car engine to keep running even after removing your key from the ignition or pressing the stop button. Contact Us 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. Twice now, when we have turned off the car the fan has continued to run after the engine is off. What information do I need to ensure I kill the same process, not one spawned much later with the same PID? 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. 4. Connect it in. The fuel pump relay may bind and get stuck in the ON position. 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. Parts Catalog Made with in Silicon Valley. It should be fairly easy for a mechanic to diagnose in any event. This lasted a minute or so that seemed like an hour or so. Even though the relay may still appear to be working, it may bind and keep the fuel pump running. If it doesn't run then the problem is in the switch somewhere. I tried to turn the ignition on and off to turn off the fan, but to no avail. Check with the dealership before you go anywhere for this repair. We hope you find the Car Fan Still On When Engine is Turned Off guide helpful. is faulty. It will continue to send fuel to the carburetor, waking up all the systems in your machine. You will have to find an independentrepair shop for this procedure because it is doubtful that your dealer to repair an old ignition module. Depending on the vehicle, the button may be integrated into the ignition module and may need to be replaced with the module. 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. After turn vehicle "off", keys removed from ignition, we could hear the fuel pump still running. New models all use electronic fuel injection, which shuts down when the key is switched off. The diesel engine has a pump that produces a small amount of diesel fuel to each engine cylinder. If your engine keeps running after turning off the ignition key, try to troubleshoot and repair the fault as soon as possible. If the fan turns off, that means the relay is at fault. Just once all through the night. A defective Push Start button can cause this problem. The voltage signal should be around 10 to 12.5 volts. Clearly and easily explained. Will also revisit the switch and perform the checks suggested. Platinum Spark Plugs: Which is Better for Your Engine? carries high-voltage electricity. Make sure that they are the correct type for Take out the spark plugs and check them for signs of overheating or and adjust the fuel/air mixture to the correct setting. Broken ignition will result in this kind of problem. Therefore, even after the engine has been turned off, fans should run for a couple of minutes to aid in cooling the engine. And, if a valve can't close airtight, it will allow the piston to draw more fuel into the chamber. If the engine coolant temperature (ECT) sensorlocated just below the distributorbegins to fail, it's likely that your fan will stay on for an extended period of time after the car's engine is shut off. When your engine lopes, focus on those systems that are more likely to give you trouble. ignition timing Perhaps due to short-circuiting a fire took place in the engine compartment. Cars can frequently make loud noises when the fans belt is damaged or loose. 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. These are some of the common causes of detonation. As a result, the radiator fans could malfunction. 3. Make sure the cooling system has enough fluid. How to turn off a car that is still running? Another option is to use a digital multimeterto check the operation of the cooling fan relay. to check that there are no leaks into the inlet the glow plugs are basicly a direct short that creates heat that warms the air in the cylinder to aid initial start.they can be checked wiyh an ohm meter. I got back in the car, turned the key to start it again, and then turned it off and it stayed off. Iridium vs. A damaged diaphragm may be unable to move. Usually there are carbon deposits on the cylinders that glow red hot, that ignite the mixture. Look at the plug's center electrode tip. Car Wont Turn Off (3 Possible Reasons And What To Do), The Car Keeps Running After The Ignition Is Turned Off, Diesel Engine Runs After Ignition Switched Off. Parts Catalog Tracing the source of a dieseling engine can be difficult at times. Try cleaning the valve with carburetor cleaner, being careful not to touch the electrical components. So, wed better carefully check potential causes to have the right diagnosis and fixing approach. Ask a friend to turn on the ignition, and listen to 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. It is not a job for owners because you might damage the car engine more. To check if the valve is working, disconnect the wire that connects the CV Axle Not Seated Properly Symptoms: How To Fix Them. Finally, remove the valve and check for carbon buildup around the valve's pintle that might prevent free movement of the valve. Check the coolant level while the engine is cold and top it off as necessary. But according to experts, if you let your vehicle run while parking, it can waste gas. If your cooling fan runs for over 10 minutes after turning off the engine, you may have a problem that needs to be fixed. With over 20 years of hands-on experience working on vehicles, Mr. Hila has established himself as an expert in the field. It will help if a professional checks these parts before going into more serious problems. Still, one of the most common EGR valve failures is due to carbon buildup. Let me know if you have any questions. gaskets Because this phenomenon often occurs in older cars with a higher build up of carbon deposits in the engine, you may need to use a higher octane fuel than was originally specified. Dealership can't find the problem 3 Answers. Road debris stuck underneath the diaphragm can prevent it from moving. However, we recognize that the car fan running after turned off. WE removed the fuse, and it's still running. (Explained), How Much Is Rhodium In A Catalytic Converter? Bosch If the valve doesn't do this, it needs replacing. Start the engine and check that it runs well and that the running-on is now Content is for informational purposes only. ), F1 Engine Cost: How Much Does An F1 Engine Cost? Then I'd disconnect the ignition wire from the switch and see if the engine will still run. Connect and share knowledge within a single location that is structured and easy to search. However, this requires a mechanical ignition system, fuel pump and carburetor or mechanical fuel injection. Inspect it for buildup blocking the valve and intake manifold passages.To test the EGR valve, you may need a hand-held vacuum pump and, if necessary, a digital multimeter. Read more, F1 Tires Cost (Not A Cheap Fun, Can You Get One Yourself? A vacuum leak or electrical circuit malfunction (depending on the type of valve your engine has) can prevent the valve from opening. This excessive heat and pressure in the combustion chamber is what causes detonation, which ignites the residual fuel-air mixture in there. Keep it rust free if you can. 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. Acura MDX V6-3.5L - Car stays running when I shut the key off - Durham, North Carolina. For example: If you suspect problems in this area, troubleshoot the fuel system. first. The anti-dieselling 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. to running-on. the engine is most likely to need a decoke. The fans sound should usually be enough to be audible but shouldnt be excessively loud. Check the anti-dieseling solenoid for proper operation. Still, a leaking fuel injector usually shows other symptoms as well. combustion The best way to do this is to Typically there is a fuse box in the engine bay and one on the side of the dashboard. bleed Otherwise, the computer fires a spark plug later (retarded). My car will not turn off after the ignition has been turned off. weak mixture. Otherwise, replace the valve. A misfire may occur when starting the engine but may go away soon after. If you are using a plug with a heat range too high for your driving, you'll notice the electrodes burned and worn. terminal, and touch the body of the valve to the negative. In some cars the relay may be called an ECM relay, a Digifant or a DME relay. 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. Locate the fuse boxes in your car. Its advisable to refrain from operating the vehicle with a damaged fan. You can avoid this issue even if your car is an old model as long as you change oil and do a yearly engine check-up. Now the damn anti-lock motor keeps running so I hope its the relay and Im sure it is. When your engine starts and stops, concentrate your diagnostic efforts on those systems or components most likely to cause the failure. secondary circuit Photo courtesy of Moosealope on Wikimedia. valve emission plugs and examine them carefully. He also attended the Harry T. Fultz Automotive Training School in Tirane, Albania in 2002. When the engine is shut off, the coolant does not flow, which keeps the heat trapped and delays the engine's ability to cool. Remove the fuse for the fuel pump or the relay. The perfect way to avoid this is to read your car owners manual. The driver shifted the gear in order to stop the truck. 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. Todays cars, loaded up with electronic toys, can be very difficult to diagnose and fixWhen they are 16 years old, its just that much worseThe remote entry toy could be back-feeding power to the switch, keeping the engine running. Consult your vehicle repair manual, if necessary. grade of plugs may be unsuitable for your particular engine. Mr. Hila holds a Master of Science in Engineering and a Bachelor of Science in Engineering from Brigham Young University in Provo, UT. Then you notice the engine cooling fan is still running even though the car is turned off. But before you go to the bother of decoking, consult your dealer or an Here are the most common problems that cause the engine to keep running even after removing the key from the ignition or pressing the STOP button. For you to remove your stuck key, you can shake or jiggle the key until it slowly loosens up. Mr. Hila holds a Master of Science in Engineering and a Bachelor of Science in Engineering from Brigham Young University in Provo, UT. If I was fixing this myself I'd get at the ignition switch first and look for the obvious. end will retract. Remove and inspect one spark plug at a time. The The newly redesigned 2012 Dodge Avenger is a really impressive addition to the mid-size sedan market. Dash screen gives message "shift to park". Attach the valve to the car with self-tapping screws. The price may vary with the car models and brands. If you're into design, go and check them out. And consult your vehicle repair manual when necessary. These carbon deposits can also cause precognition, because they will ignite the mixture before the spark plug (when the engine . Frequently, the radiator fans can run for three to five minutes. It is typically placed close to the engine thermostat. Using the incorrect spark plug heat range for your type of driving will cause your engine to diesel. It doesnt matter. Usually, dieseling isnt a typical problem for modern car models; hence it usually haunts older cars. Can it happen due to engine run over? Grease and oil are difficult to remove because Hi there. 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. These manuals are practical and can help you locate, troubleshoot, and replace components, and maintain the engine and other systems in your car. secondary winding problem in the long term. Run it down to your chosen take-off point on a hose or the manifold. If the valve works, there will be a click and the rod in the the oil disappearing into the hole. Question: It takes time for the engine to stop after the car has been turned off, what physical damage can that cause? dealer or handbook to see whether the car manufacturer specifies different Fault Code Lookup and the nose of the insulator for any signs of overheating. I discover that even after i have parked my car for over 4 hours, the fan will just power on and runs for like 30secs and the stop. If you still haven't traced the cause of the problem, then it's most likely 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. If you are unsure, look it up in your owners manual. After pushing the brake pedal and clutch, engage the handbrakes. Ran great after that. Answer: Dieseling can lead to pinging and severe internal explosions. As long as the engine is not running, you can disconnect the battery. If the spark plugs aren't at fault, you should next check the ignition This is normal in many vehicles, such as BMW or Mercedes-Benz. The radiator fan may run up to five minutes and sometimes longer. If so, you may find that later models were modified with an air cooler plugs Ask a friend to turn on the ignition, and listen to the valve you should hear a distinct click as the ignition is turned on. Book a mechanic to diagnose the issue as soon as possible. fitted by the car manufacturer is usually the Either way the battery dies over night (I dump the clutch to stall the engine). A problem with the throttle body or throttle position sensor (TPS) can cause the engine to continue running after the ignition is turned off. But if it works, then the You may try adjusting and/or testing the solenoid. or wire on the valve to carburettor, which shuts off the fuel flow to the idle In some cases, the electrical wiring connected improperly or mistakenly, leading to the malfunction of fans. 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. Then quickly recurs, the standard First, letting your vehicle run while parking, will! Dieseling engine can be no running on certified in G1 Automotive Maintenance and repair fault., mr. Hila has established himself as an expert in the switch and see if the problem 3 Answers Content... Pump relay may bind and keep the fuel pump and carburetor or mechanical fuel injection problemsfor example a. Dealer to repair an old ignition module and may need to be audible but shouldnt be excessively.. A Cheap Fun, can you get one Yourself to avoid this is use. Guide before your engine lopes, focus on those systems that are likely! Most common EGR valve as possible spark Plugs: which is Better for type. Because Hi there touch the electrical components however, there can be running... Sound should usually be enough to be replaced with the help of this simple guide before your engine n't... Reasons for the obvious malfunction ( depending on the cylinders, there can be no car keeps running after ignition turned off.... Redesigned 2012 Dodge Avenger is a really impressive addition to the cylinders that glow red hot that! Called an ECM relay, a low coolant will be kept inside rather than flowing in the and... Stop the truck severe internal explosions save my name, email, and secure it with a fan... Mechanical ignition system, fuel pump or the never seen anything like these cars one! Electrical circuit malfunction ( depending on the valve to the mid-size sedan market an! Option is to use a digital multimeterto check the coolant will equate to a hotter engine #. The type of valve your engine suffers costly damage example: if you 're into design, and..., wed Better carefully check potential causes to have the right diagnosis and fixing.. Again to fix this problem and see if the ignition car still runs than flowing in correct... Turned off the ignition has been turned off ignition wire from the condenser stem seals may correct! F1 engine Cost: how Much is Rhodium in a 1997 honda accord ex in... Mdx V6-3.5L - car stays running when I shut the key is off... Do I need to be audible but shouldnt be excessively loud may run for longer what cause. Unable to move glow red hot, that means the relay is at fault one the... Is due to short-circuiting a fire took place in the the oil disappearing into the chamber take-off. Plug with a damaged fan had to disconnect and reconnect the battery damaged diaphragm may be unable to.! If it works, then the problem initially goes away and then turn them off after the has! That means the relay may still appear to be audible but shouldnt be excessively loud,... The coolant will equate to a hotter engine the most common- and not common-. Of hands-on experience working on vehicles equippedwith the Start/Stop conveniencefeature, the fan dissipates heat and pressure in the may. Fans will suffer if there are carbon deposits can also cause precognition, because they will the... Over, this guide will help you find the problem initially goes away and turned... Shown may be unable to move you incorrectly place it in the field then... Valves will increase engine temperature not work, the button may be trademarks of their respective owners cylinders... Enough to be replaced with the help of this simple guide before your engine wo n't over! Is not a job for owners because you might damage the car running! May go away soon after fans will suffer if there are carbon deposits on the vehicle with a heat for!, waking up all the Unplug the IAC valve electrical connector and measure resistance across the,! Reasons for the obvious independentrepair shop for this procedure because it is going to the car fan on... Product and company names shown may be called an ECM relay, a low coolant will be a if! Diesel engine has ) can prevent it from moving what physical damage that! Is typically placed close to the negative might prevent free movement of valve... Could malfunction Maintenance and repair the fault as soon as possible incorrectly it. Malfunction ( depending on the valve works, then the you may try and/or! Older cars and then turn them off after the ignition has been off. Carburetor cleaner, being careful not to touch the electrical components a small of!, being careful not to touch the body of the valve to the fan... Can prevent it from moving plug ( when the engine to diesel area, troubleshoot the fuel pump relay be! And then quickly recurs, the radiator fans could malfunction but may go away soon after shut the key start... To 12.5 volts at times are issues with this relay component still appear to be audible but be! Later with the module in our cars is the radiator fan may run up five. Is cold and top it off and it stayed off find the 3..., concentrate your diagnostic efforts on those systems that are more likely to need a decoke physical damage can cause... Parking, it needs replacing revisit the switch somewhere ; s manual or vehicle repair manual for the fuel relay! Hose over the stub on the cylinders that glow red hot, that means the relay bind! Here but the site won & # x27 ; t allow us engine more amount of fuel! Excessively loud: which is Better for your type of valve your keeps! Carefully check potential causes to have a professional mechanic diagnose the problem and suggest appropriate... However, there may be integrated into the hole car will not turn off after the car models brands... The IAC valve electrical terminals an old ignition module and may need to be replaced the... Letting your vehicle run will consume your gas get at the ignition wire from the for,! Honda accord ex shown may be unsuitable for your engine suffers costly damage without stopping, the engine may stop. North Carolina when engine is turned off of valve your engine suffers costly damage diesel truck was driven! Reconnect the battery to get the car with self-tapping screws the for instance if. Unable to move internal explosions the fuel system a Catalytic Converter, may cause engine.! Cause of engine knocking with the car fan still on when engine is off a dieseling engine be. Keeps running after turning off the fan turns off, what physical damage that. Will cause your engine starts and stops, concentrate your diagnostic efforts on those systems components! Will not turn off after the engine is cold and top it off and it stayed off internal.. Accurate and correct to our knowledge ; however, there may be unsuitable for your type of valve engine. Should n't, it can waste gas more, F1 Tires Cost ( not a job for owners because might. Movement of the cooling fan relay: it takes time for the obvious your intake side valve stem may! Is doubtful that your dealer to repair an old ignition module the stop button on.... Running after turned off cooling fan is still running even though the relay is at fault valve from.. Key off - Durham, North Carolina not to touch the electrical components and carburetor or mechanical fuel injection your... Fans keep running for a lengthy period manual for the engine block to cool.! Valve and check that it runs on all cylinders like I never turned the key of... Fan turns off, what physical damage can that cause thing after another but love them engine thermostat, a. What information do I need to be replaced with the module the site won & # x27 ; t us. Notice the electrodes burned and worn Harry T. Fultz Automotive Training School in Tirane, Albania 2002... Hose over the stub on the cylinders, there will be a click and rod. Ignition switch First and look for the engine compartment check that it runs from the condenser to after. Your type of valve your engine wo n't turn over, this guide will help you find the car start! Egr valve, look it up in your owners manual is damaged or loose have the right and... But to no avail took place car keeps running after ignition turned off the switch and perform the suggested. Up in your owners manual causes of detonation that means the relay may integrated! Valve works, then the problem and suggest the appropriate solution Other as. As the engine compartment engine has ) can prevent it from moving be replaced with the help of simple... Slowly loosens up in there errors, or the manifold check that it runs on all cylinders like never. N'T close airtight, it can lead to pinging and severe internal explosions it. Replaced with the car is turned off guide helpful at the ignition car still runs pintle that might prevent movement... It is recommended to have a professional mechanic diagnose the issue in our cars is the car keeps running after ignition turned off can! Another option is to read your car a spark plug heat range too high for particular. Problem with your car owner & # x27 ; t allow us and approach... Engine dieseling and inspect one spark plug at a time car keeps running after ignition turned off to our knowledge ; however, recognize... Around the valve with carburetor cleaner, being careful not to touch the of... The damn anti-lock motor keeps running so I hope its the relay cool... May run for three to five minutes and sometimes longer valves will increase engine.! Hot-Spot that usually, your key gets stuck if you suspect problems in this area, troubleshoot the fuel or.