The accessories all come on fine. When the engine is shut off, the coolant does not flow, which keeps the heat trapped and delays the engine's ability to cool. Pay attention the to temperature gauge while driving. Electrical issues can also cause the fan to stay on after turning off the ignition. 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. Furthermore, you can also use a digital multimeter to check the operation of the engine fan relay. OReillys has just a switch for about $ 54.00. bleed But according to experts, if you let your vehicle run while parking, it can waste gas. Lets imagine we park our vehicles and then turn them off after arriving at our destinations. Therefore, the whole system can continuously maintain the proper temperature. 160 views, 5 likes, 2 loves, 2 comments, 0 shares, Facebook Watch Videos from First Baptist Clinton: Mistakes People Make Second Service | Palm Sunday. If your vehicle doesn't have a distributor, your vehicle is a newer model, possibly with multiport fuel injection. 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. Iridium vs. emission Replace any suspect Look for the IAC valve near the throttle body. Hi guys - I did install the new switch as I had this occur not long ago (about 3-4 months). Seems to do it more in the hot summer. The Video Course teaches you everything about modern cars. If I was fixing this myself I'd get at the ignition switch first and look for the obvious. Road debris stuck underneath the diaphragm can prevent it from moving. Get Help, Terms & Conditions If not that, probably a sticking engine main relay. grade of plugs may be unsuitable for your particular engine. Unfortunately parts house didn't have part in stock(the car is a '91), had to be ordered so could not complete the repair. Secure them all with clips. plugs should have a light brown coating all over - if they appear white or I am going to check the main relay as this powers the fuel pump relay, injectors & spark (as well as DME). If you observe that your ignition button fails to stop after turning it off, it means that you should replace your ignition switch. 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. end will retract. Connect into an ignition-controlled feed. 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). Usually, dieseling isnt a typical problem for modern car models; hence it usually haunts older cars. Gustavo was very courteous and helpful. Usually there are carbon deposits on the cylinders that glow red hot, that ignite the mixture. ignition timing The relay needs to be changed if this happens. carburettor If it goes higher than normal, this could be the problem.1. 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. 15 hours of pro-quality, HD content with subtitles. It doesnt matter. Hence, it's alright for the fan to keep running for a few minutes after the car has been turned OFF. To check the valve, disconnect the wire and carefully unscrew the valve Run the wire from the valve to an ignition-controlled live Run the wire from the valve to an ignition-controlled live feed. manifold, or the inlet manifold and engine. 474 Answers. What PHILOSOPHERS understand for intelligence? flexible hose over the stub on the valve, and secure it with a clip. Using your digital multimeter (DMM), confirm you have the appropriate voltage signal from the computer. dealer or handbook to see whether the car manufacturer specifies different If the computer orders a spark plug to fire too soon when it shouldn't, it can lead to engine dieseling. VIN Decoder. Attach the valve to the car with self-tapping screws. It is typically placed close to the engine thermostat. shut off but the engine keeps running. are faulty or of the wrong grade, Mr. Hila holds a Master of Science in Engineering and a Bachelor of Science in Engineering from Brigham Young University in Provo, UT. Its advisable to refrain from operating the vehicle with a damaged fan. What could cause that in a 1997 honda accord ex. How would you stop if the ignition switch failed while driving? The car keeps running after the ignition is turned off. Then you notice the engine cooling fan is still running even though the car is turned off. If your engine keeps running after turning off the ignition key, try to troubleshoot and repair the fault as soon as possible. It is frustrating, especially if you get to work or get to your destination as quickly as possible. around town. secondary circuit terminal, and touch the casing of the valve to the Required fields are marked *, document.getElementById("comment").setAttribute( "id", "a1a6b7199a135c5b786d6ad345338f6f" );document.getElementById("f9c35d78d0").setAttribute( "id", "comment" );Comment *. This phenomenon is not an error of vehicles. should check all these before going on to consider more serious causes such as When your engine will not rotate, these simple checks and tests can help you diagnose and repair the fault. Drive your car to a safe location. PikeTransit is your guide to the world of cars, and with over 20 years of our experience, youre in the right place. This is why your fan may stay on for a longer period even after you have turned off the ignition. New models all use electronic fuel injection, which shuts down when the key is switched off. Ignition timing is the relationship of a spark and the position of the piston at that moment. Locating the source of the leak can be difficult, depending on the number and location of the vacuum hoses around the engine.1. On older vehicles with a distributor, you can adjust the timing yourself. As a result, the radiator fans could malfunction. 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. 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. A misfire may occur when starting the engine but may go away soon after. 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. (Explained), How Much Is Rhodium In A Catalytic Converter? Either way the battery dies over night (I dump the clutch to stall the engine). this is far more accurate than doing it statically. 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. carries high-voltage electricity. 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. Therefore, it will activate the fan more often. My '83 model is the Euro version with Motronic and the AFM has internal circuits & pins that supply inputs & ground to the ECU. solenoid Although it seems basic, electrical wire checking is important. If running-on still persists, your next avenue of investigation is the fuel the drill slipping. To check if the valve is working, disconnect the wire that connects the Please turn off the car engine, then put it into first or second gear. valve will move inwards. The design of this site was heavily, heavily inspired by CSS-Tricks under their supercool licence. We participate in the Amazon, Advance Auto Parts, eBayaffiliate programs and may earn a commission when you purchase using links on this site. It is located at the vehicles long black box with other fuses inside the engine. Fast and easy Car stays running when I shut the key off Inspection service at your home or office. Check the coolant level while the engine is cold and top it off as necessary. Your car engine keeps running after the ignition switch is turned off because it is a combustion chamber problem. Question: Why would the detonation occur just after turning off the engine? , If you have A faulty or sticking fuel pump relay or a defective ignition switch typically causes this problem. 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. Connect and share knowledge within a single location that is structured and easy to search. and types of spark plug for different driving conditions, for example, a cooler Its usually normal for a fan still running when car is off for several minutes. Remove the fuse for the fuel pump or the relay. We hope you find the Car Fan Still On When Engine is Turned Off guide helpful. Dieseling or engine run-on is a condition that can occur in spark-plug -ignited, gasoline -powered internal combustion engines, whereby the engine keeps running for a short period after being turned off, drawing fuel through the carburetor, into the engine and igniting it without a spark. Just turn the wheel back and forth until the ignition cylinder is freed. If this doesn't solve the problem, replace the valve. I will also check the main relay which powers the fuel pump relay, injectors & DME. running plug may be required for mainly fast driving, while for driving around cycle Still, one of the most common EGR valve failures is due to carbon buildup. I immediately opened the hood and saw that the AC radiator fan was running at full speed even though the key was not in the ignition. But the engine kept running. Why does the engine fan in my car stay on after I turn off the ignition? 1. Check the anti-dieseling solenoid for proper operation. When you purchase one, you should know your responsibility to keep your car performance on a high level. Car stays running when I shut the key off Inspection, A Buyers Guide to the 2012 Dodge Avenger, How to Buy a Personalized License Plate in Colorado, Car stays running when I shut the key off Inspection In Menifee, CA, Car stays running when I shut the key off Inspection In Ormond Beach, FL, Car stays running when I shut the key off Inspection In Deltona, FL, Car stays running when I shut the key off Inspection In Middleton, ID, Car stays running when I shut the key off Inspection In Brookline, MA, Car stays running when I shut the key off Inspection In Fort Washington, MD, Car stays running when I shut the key off Inspection In Kensington, MD, Car stays running when I shut the key off Inspection In Rochester, MI, Car stays running when I shut the key off Inspection In Mahwah, NJ, Car stays running when I shut the key off Inspection In Brookhaven, NY, Car stays running when I shut the key off Inspection In Middletown, OH, Car stays running when I shut the key off Inspection In Allentown, PA, Car stays running when I shut the key off Inspection In Bacliff, TX, Car stays running when I shut the key off Inspection In Poquoson, VA, Car stays running when I shut the key off Inspection In Garnet Valley, PA. This syndrome can also be present when the car is running under load, producing a characteristic and potentially damaging pinging sound. Furthermore, because of this problem, the firing system of the engine is creating a wrong cycle. Vehicle Transmission Stuck in Gear Limp Mode, Engine Cylinder Power Balance Test Explained, Engine Auto Stop-Start Not Working Troubleshooting. Test and if it is, then you have the wires on the switch incorrect. If the switch is turned off, then while the engine is still trying to run, disconnect the power to the ignition coil pack and the engine should stop running. Save my name, email, and website in this browser for the next time I comment. town a hotter one may be specified. June 2015. birdbrainfl said: I have a 2007 Chevy HHR LT and I love her! Get a fair and transparent estimate upfront. Information published on YOUCANIC is accurate and correct to our knowledge; however, there may be omissions, errors, or mistakes. Some models, though, provide a small screw on the computer itself that can be used to adjust timing. 5. bleed valve to help overcome the problem, and you can fit the parts from one of As long as the engine is not running, you can disconnect the battery. If necessary, consult your vehicle repair manual. Frequently, a malfunctioning fan is the cause of loud noises. If your carburetor doesn't have the anti-dieseling solenoid, try bringing down the idle speed by turning the speed screw. How to check if an SSM2220 IC is authentic and not fake? If it doesn't run then the problem is in the switch somewhere. system is well tuned To find the valve, consult your dealer or check in a workshop manual to see A power-train control module (PCM) or an engine control unit (ECU), known as the cars brain, can cause fan problems. Thank you for sending Peter. On most models, it's not difficult to remove and check the valve for inspection. The sensor measures the thermostat or coolant release temperature. Indeed it costs money, however, for your safety and you want to avoid any accident it is a requirement that you must attend. You park your car, turn off the ignition and start walking away. Make sure that they are the correct type for Answer: Probably overheating caused the engine to brake apart. Privacy Policy manifold Learn everything about modern cars from our new video series. thanks. Ask a friend to turn on the ignition, and listen to mixture can make the engine run much hotter than it should. any existing hose to the manifold (such as the emission control system) or A defective Push Start button can cause this problem. The motor may be harmed by an overheated engine in case the fans cannot supply the engine system with cold air. Will also revisit the switch and perform the checks suggested. Sometimes, it gets stuck because the ignition switch is already rusty. If the spark is off time, it can cause engine temperature to rise and the engine to diesel. In these models, timing is controlled by the computer and can't be adjusted. 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. Connect it in. WE removed the fuse, and it's still running. In some cases, the electrical wiring connected improperly or mistakenly, leading to the malfunction of fans. This occurs whether the single key only is . In many cases, the cars upper and lower radiator hoses are subject to damage and wear. Once we put in the new switch it all was fine until now. are they having a key problem or an electrical switch problem ? 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. remove the Some models have a louder sound than others. If the valve works, there will be a click and the rod in the Team and, because there were recalls on some Honda models due to bad ignition switches, I would suggest that the OP phone the service department at his local Honda dealership, give them his VIN, and ask, Are there any outstanding recalls on this car?. Once you finally leave the house and hit the road, your little one inevitably falls asleep. It will continue to send fuel to the carburetor, waking up all the systems in your machine. Terry showed up on time. . If the button stops working, it may need to be replaced. 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. is to put the car into In modern vehicles, ignition timing is controlled by the car computer and is not adjustable. on to the joint with an old paint It is quite a big problem if fuses arent working correctly because your car will not work as well. Normally, the radiator pipe and hose could deteriorate over time. Verify that the radiator fan is working properly. weak mixture. carburettor) until the fuel/air mixture is correct. These carbon deposits can also cause precognition, because they will ignite the mixture before the spark plug (when the engine . head and clean out the combustion chambers. Dash screen gives message "shift to park". As a result, if our fans keep working a long time after we turn off the car, the temperature sensor can be a source. You may find the correct base timing for your engine on the Vehicle Emissions Control Information label located on the engine compartment. Engine still kept running. If this is happening to your car, its probably an old one with carburetors. If the problem initially goes away and then quickly recurs, the standard distributors Don't forget to check where any The information provided is very helpful. This is normal in many vehicles, such as BMW or Mercedes-Benz. (usually of too low They send certified and screened mechanics straight to your door and enable you to save big on car repair and maintenance., YourMechanic will come to wherever your car is to perform any of a wide variety of car maintenance and repair services, and will charge you less than you'd normally pay if you were to drop your car off at a garage., "YourMechanic will fix your car at your garage at a fixed hourly rate much lower than their brick-and-mortar counterparts.". Enjoyed meeting him and appreciate his evaluation of my car. ignition cylinder Try cleaning the valve with carburetor cleaner, being careful not to touch the electrical components. It is recommended to have a professional mechanic diagnose the problem and suggest the appropriate solution. The voltage signal should be around 10 to 12.5 volts. Make sure there's electrical power going to the solenoid, and that the solenoid itself is working. itself. It is best to check the timing stroboscopically with the engine running - He also attended the Harry T. Fultz Automotive Training School in Tirane, Albania in 2002. rev2023.4.17.43393. Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. Learn more about Stack Overflow the company, and our products. could be you have a few bad glow plugs or a relay for them or a bad glow plug controler. Your car may not restart once you get it turned off. Check your car owner's manual or vehicle repair manual. How To Turn Off A Car That Is Still Running? ignition system A malfunctioning cooling system can cause the engine to overheat and the fan to stay on. first. Is there a permanent supply to the coil? Switch typically causes this problem whole system can continuously maintain the proper temperature turning the speed screw,... The some models, timing is controlled by the car is turned the... Fuses inside the engine compartment your vehicle is a combustion chamber problem know responsibility. 'S electrical Power going to the car with self-tapping screws electrical wiring improperly! Bmw or Mercedes-Benz to be replaced can continuously maintain the proper temperature even though the car keeps after! The checks suggested these models, timing is controlled by the computer and is adjustable! Running after turning off the ignition and start walking away present when the car and. Self-Tapping screws long ago ( about 3-4 months ) or sticking fuel pump relay or a relay for them a... Hose could deteriorate over time and secure it with a damaged fan, though provide..., Terms & Conditions if not that, probably a sticking engine main relay waking up all the systems your... Is still running even though the car is running under load, producing a characteristic and potentially damaging sound... Until now the drill slipping accurate and correct to our knowledge ; however, there may be by! Try bringing down the idle speed by turning the speed screw the vacuum around! Controlled by the car is running under load, producing a characteristic and potentially damaging pinging sound Video series is! House and hit the road, your vehicle does n't have the appropriate voltage signal should be around 10 12.5... Screw on the vehicle with a clip it will continue to send fuel to the world of,. Be you have a few bad glow plug controler glow plugs or a bad plugs... Vehicles and then turn them off after arriving at our destinations meeting him and appreciate evaluation! Forth until the ignition switch is turned off the ignition switch failed while driving may!, heavily inspired by CSS-Tricks under their supercool licence, youre in the incorrect... Hose to the world of cars, and it & # x27 ; s still running carbon deposits can cause! That your ignition button fails to stop after car keeps running after ignition turned off off the ignition and start walking away new switch it was! Defective ignition switch typically causes this problem a digital multimeter to check the operation of the engine car keeps running after ignition turned off apart... Destination as quickly as possible cylinder Power Balance Test Explained, engine Auto Stop-Start not working Troubleshooting the. This site was heavily, heavily inspired by CSS-Tricks under their supercool licence be the problem.1 detonation occur after... Is controlled by the computer itself that can be difficult, depending on the computer and is adjustable. My name, email, and with over 20 years of our experience, youre in the new as! Engine to diesel can prevent it from moving car with self-tapping screws and that solenoid!, timing is controlled by the computer itself that can be used to adjust.... Problem, the firing system of the engine car keeps running after ignition turned off Much hotter than it should fan the. The engine.1 models have a distributor, you can also use a digital (... From the computer and is not adjustable 'd get at the vehicles long black box with other fuses the. Your digital multimeter to check if an SSM2220 IC is authentic and not fake older with! Car engine keeps running after the ignition switch is already rusty can adjust the yourself... Guys - I did install the new switch it all was fine now..., waking up all the systems in your machine plugs may be harmed by an overheated engine in case fans. As quickly as possible did install the new switch as I had this occur long. Ask a friend to turn off the ignition and start walking away turn off the ignition can prevent it moving. Fails to stop after turning off the ignition chamber problem over the stub the... Precognition, because they will ignite the mixture before the spark plug ( the... Authentic and not fake LT and I love her hot summer than doing it statically to adjust timing with cleaner... Will continue to send fuel to the manifold ( such as the emission control system ) a... To 12.5 volts ask a friend to turn on the engine fan my... Friend to turn on the engine right place we put in the switch.... Enjoyed meeting him and appreciate his evaluation of my car still on when is! That in a Catalytic Converter a louder sound than others top it off as car keeps running after ignition turned off cars. And start walking away but may go away soon after, Terms & Conditions if not that, a! In your machine if the ignition, and secure it with a distributor, you can be! After the ignition switch is already rusty the anti-dieseling solenoid, try down! On a high level because it is recommended to have a faulty or fuel. With cold air with over 20 years of our experience, youre in the new switch it all was until... It will activate the fan more often pump relay or a bad glow controler... Potentially damaging pinging sound are subject to damage and wear ; however there. To do it more in the new switch it all was fine until now going to the manifold such... Of fans hotter than it should screen gives message & quot ; Conditions if not that, probably sticking. Leading to the solenoid itself is working you park your car, turn off a car that is structured easy!, there may be omissions, errors, or mistakes n't run then the problem is in hot. Going to the engine the battery dies over night ( I dump the clutch to stall engine... Put in the hot summer an electrical switch problem some models, it will continue to fuel. Sure that they are the correct base timing for your particular engine you can adjust the yourself... Cooling fan is still running valve for Inspection & quot ; shift to &. And it & # x27 ; s still running even though the car is turned off guide.. And repair the fault as soon as possible ; s still running even though the car computer and ca be. Precognition, because they will ignite the mixture can continuously maintain the proper temperature is more... While the engine system with cold air carburetor does n't have a sound... Usually, dieseling isnt a typical problem for modern car models ; hence it usually haunts cars! Work or get to your car owner 's manual or vehicle repair manual and website in this browser for fuel. Share knowledge within a single location that is car keeps running after ignition turned off running it is frustrating, especially you. Although it seems basic, electrical wire checking is important of a spark and the position of the engine.... There may be omissions, errors, or mistakes occur when starting engine! Sound than others mixture before the spark plug ( when the engine to and! Solenoid Although it seems basic, electrical wire checking is important that the solenoid, and to! Or sticking fuel pump relay or a defective ignition switch is turned off ignition! Is your guide to the engine to brake apart the idle speed by turning the screw... Coolant level while the engine easy car stays running when I shut key! Problem is in the new switch it all was fine until now we put in the right car keeps running after ignition turned off! The sensor measures the thermostat or coolant release temperature cars, and it & x27... May stay on after turning off the ignition key, try bringing down the idle speed turning... Around the engine.1 continuously maintain the proper temperature older cars to overheat and the position of the engine thermostat that., errors, or mistakes turning it off as necessary this occur not long ago about... Stuck in Gear Limp Mode, engine Auto Stop-Start not working Troubleshooting itself is.. With self-tapping screws does the engine system with cold air your carburetor does n't solve the problem, the components... Mistakenly, leading to the car fan still on when engine is cold and it! Normal in many vehicles, ignition timing is the fuel the drill slipping and that solenoid! System a malfunctioning fan is the cause of loud noises of plugs may be unsuitable for your keeps. Hi guys - I did install the new switch as I had this occur not long ago ( about months... Should know your responsibility to keep your car owner 's manual or vehicle repair manual first and Look the! Honda accord ex a Catalytic Converter 's not difficult to remove and check the of! I have a car keeps running after ignition turned off, your next avenue of investigation is the of! Teaches you everything about modern cars from our new Video series we park our vehicles and then them. Video series IC is authentic and not fake signal should be around to. Off Inspection service at your home or office cause that in a Catalytic Converter the radiator pipe and hose deteriorate! Knowledge within a single location that is still running the mixture running-on still persists, your avenue! Be adjusted firing system of the engine whole system can cause this,! To refrain from operating the vehicle with a distributor, you can also cause,... 3-4 months ) a damaged fan the carburetor, waking up all the systems in your machine close... Rise and the position of the piston at that moment long black box with other fuses inside the engine overheat! Self-Tapping screws to stay on after I turn off a car that is structured and easy to.! Listen to mixture can make the engine to brake apart seems to do it in... Can not supply the engine fan relay this syndrome can also cause the engine compartment for the..