Check Engine Light On And Off Intermittently

Initially, I started the truck and the check engine light was still on. INTERMITTENT CHECK ENGINE LIGHT An intermittent check engine light situation is often very difficult to diagnose since the light will go on and off thus making it hard or impossible to capture the underlying trouble code. as the fault isnt happening for long enough the light only flash's then goes out. On some cars and trucks the check engine light will go off when the problem self-corrects or goes away (eg. So a while back my check engine light came on, but the car ran fine. Intermittently the VSC light off light comes on. Helped me with an intermittent air bag. Back side: A number of different options are available when using electric bicycles. The check engine light in my car is cycling on and off (on for a week, off for a week). I had it scanned with vag com and it showed these three fault codes: 00532, 01330, 00849. I also started noticing that my engine felt like it wanted to cut out intermittently when I would come to a stop (slow or fast, didn't matter). Didn't detect any difference in how it ran, then the following morning, when starting her up to go the work the light was off. Just bought this used '08 Highlander (clean Carfax) and this morning while I was pulling out of the gas station and stopping behind this truck I felt a weird 'tug' while braking. Subaru Check Engine Light and Code # P0420 Explained By Justin Stobb on January 18, 2011 in All Wheel Drive Auto News , Featured , Subaru Repair Seattle If the check engine light comes on in your Subaru there is always a corresponding code set in the computers memory. I checked for codes with a Daytona twin scan. Now I have time to figure it out. Usually, you can do this by turning the key to the key-on/engine-off position. If the light stays on, the fault is ongoing. Hi guys, I was hoping you could help me figure out what to look for on an intermittent brake light problem I am having with my 94 Buick Regal Custom. Took it to the shop and they diagnosed with a bad coil rail and replaced. If you have ever been driving and your check engine light came on, you likely had an instant reaction of panic followed by the question, "Why is the check engine light on in my new Chevy?" There can be a lot of things that can cause your check engine light to come on, but there are a few that are more common than others. This past weekend I visited my folks and the car sat for a couple of days. If the engine appears to misfire, one or more bad spark plugs can cause the Check Engine light to come on, meaning the engine is not operating efficiently. -Red battery light flickered on and off briefly the other day on the way to work. Make sure your gas cap is tight. One mornig on teh way to work I noticed it stumbled while taking off from a stop sign. 1996+ Mustangs have an OBDII port that will allow certain handheld devices to plug into it and read what your check engine light means. Answer: The check engine light is controlled by the PCM. GM dealer said I needed a new catalytic converter, which at that time was over $1000. In the last few days the "low coolant" light has been intermittently turning on on my friend's BMW X3 (2007 ~70K miles). From a full stop, slams into gear. My used TJ came with intermittent O2 sensor codes and occasional misfires which ultimately proved to be bad pre-cats. My check engine light is coming on and off intermittently. Leave PCM disconnected. It is a bit intermittent but seems to be on more than off. 9L gas engine and I have a check engine light coming on intermittently. Just this morning started to shake real bad off and on while driving. As soon as it cooled off( under 105) the light went off and it hasn't been back on. When I first start up and fro about the first 20 minutes of driving, the turn signals will not always work. If the light stays on, the fault is ongoing. : Fixing your car doesn't have to be expensive. The "check engine" dashboard warning light is dreaded by drivers of all sorts of vehicle makes and models. Together intermittently: clutch,a/c,windows,air bag Check Engine Light - Small. As I slowed down the light stopped, I then shut the truck off, then restarted and went on my way. Or if you have on star press button ask for remote diagnostics. The hypothesis of an intermittent central engine al though intriguing has to be from PHY 100 at Assiut University. VX was operating fine for 20 minutes then check engine light and buzzer came on. About a quarter mile down the road I felt some shaking and my check engine light blinked once and didn’t again. Again, this only happens in the morning and is intermittent. clear the codes). It is a good idea to check the engine when this light comes on because it usually indicates a problem of some sort. If your check engine light comes on in your Hyundai, you probably want to know why. The "Check Engine" light is sometimes on my 2001 Toyota Corolla. every 1000 miles the engine light comes on and as soon as i add 1 or 2 quarts of oil, the light goes off, it has become a pain, I thought I could drive this car at. NOTE: The Check Engine Light (CEL) or Service Engine Soon (SES) light lights steadily to indicate there is a problem with the vehicle. But after all these years, "Check Engine" lights remain a mystery to many technicians and automotive do-it-yourselfers. If this was indeed the trigger, your check engine light should go off within 10 or 20 miles once you’re back on the road. The check engine light comes on whenever I drive on the highway (sometimes within a few miles other times after about 20 minutes of driving). If an intermittent fault does not reoccur after three consecutive trips, the Malfunction Indicator Light (MIL lamp) will go out but the code will remain in memory. ” “Check engine. Last week I was driving to work going about 60mph on a gradual uphill and the check engine light started flashing. Chevy Engine Light Questions And Answers. Any ideas of what I need to check. (I think since then cheaper aftermarket options have came out, but the truck continues to run fine, including the same gas mileage so I can't see replacing it). 2015+ F150 - Feature or problems? Auto start/stop and heated steering intermittent - Sometimes at a red light, the truck shuts down and then restarts when brake is released, and other times it does not. When it does, it idles low/rough, around 500rpm. I drove out of car park about 30 secs down the road and pulled over and switched car. Welcome to the Chevy engine light Question and Answer Page! This page should save you some time from submitting a duplicate question and having to wait for a response. EEC IV 2 DIGIT CODES NOTE: When you see "is/was" listed for a code: For a HARD fault code the sensor IS out of range right now. The transmission shifts fine, and the transmission fluid looks good. Sport Utility. That code indicates that the computer is detecting that the engine is not reaching operating temperature within a reasonable time after startup. Teacherman is VIP+ Member. I looked in my manual book for 2001 holden barina car to see what the light was all about and it read engine light. A check engine indicator is a malfunction-indicator light or MIL for the computer-management system. It's running fine. I am currently experiencing an intermittent check engine light and an A/C that is not blowing cold air. Check Engine Light comes/on/off intermittently for over several months. If the problem persists, the code will reset and the Check Engine Light will come back on. The wire diagram in the FSM will show the color. 17 problems related to check engine light on have been reported for the 2011 Chevrolet Malibu. When going on the interstate for 10 minutes the light goes out and stays off for a few key strokes around town use and then comes back on again until it gets to the interstate for 10 minutes. Dealers believe it is coming from the electrical harness. Some codes pertain to more than one system but there will be only one of the systems on the vehicle. ok so i know how to get rid of the light because i did it already when my 5k miles came on, now im at 16600 and its coming on, this is the first time ive seen it blinking while the engine starts up but it could have happened earlier, is this just a reminder for replacing your oil and it comes back every 5k miles or could this be something else??. So you would check the negative battery cable connections and the engine to body ground connection. To your car's on-board diagnostic system, or OBD system, a change in pressure could indicate a leak in the emissions system, so the light is triggered to alert you to the problem. My check engine light was on in my new-to-me 2000 Tundra V8, and I went to get the code read at Autozone. It would take another 20-40 miles and multiple times of turning the car on and off before the check engine light turned off. Morning all, have tried to search this to see if any posts already but can't find any, so hopefully this isnt a repeat! I've just got a 98/99 1. Power loss results. Count the number of times the malfunction indicator lamp (check engine lamp) on the instrument panel flashes on and off. This past weekend I visited my folks and the car sat for a couple of days. Usually, you can do this by turning the key to the key-on/engine-off position. Re: Intermittant check engine light Correct,as soon as you shut off the sled the code goes historic and the dealer has to pull it up. Next they replaced my thermostat. If you have ever been driving and your check engine light came on, you likely had an instant reaction of panic followed by the question, "Why is the check engine light on in my new Chevy?" There can be a lot of things that can cause your check engine light to come on, but there are a few that are more common than others. I turned the car off, and. Last Oct/Nov the check engine and check VSC lights came on. Could you shed any light on this situation?. Just started - mostly at low RPM. While we understand not everyone is a mechanic, understanding why your Toyota check engine light is on can relieve a lot of stress. Is your blue "brights on" light blinding you ? - we can repair to reduce light intensity. Comp check pricing based on KBB Hours and Directions Meet the Staff Write a Review Career Opportunities. Naturally I discovered that the alternator was not charging after it ran the battery down and wouldn't start. Dealer reset and suggested it might have been a fluke and to disregard if the check engine light didn't re-appear. Turn Ignition/Light Key Switch to IGNITION and wait approximately 10 seconds (4 seconds lamp ON, 6 seconds lamp OFF) for check engine lamp to start flashing. If this was indeed the trigger, your check engine light should go off within 10 or 20 miles once you’re back on the road. That is your daily dose of knowledge. This past weekend I visited my folks and the car sat for a couple of days. this is shows intermittently. my car was driving beautifully, same as always. Google 'free check engine light scan' + ' your town' to find a shop that will scan your car for free. Bike is a 2007 fxd with the original battery and 48k. Welcome to the Buick engine light Question and Answer Page! This page should save you some time from submitting a duplicate question and having to wait for a response. When the light goes off all my controls work. Hit a bump, get stuck in mud or snow, the TRAC OFF light come on. I own a 2003 Honda Accord V6 EX. After that, the test drive was much better - the problem was gone. Jump to Latest Follow 1 - 5 of 5 Posts Once the car is warmed up, it seems that every other time she starts it, the light goes on. Hi I have a manual 99 CRV with 102k miles on the clock. The check engine light comes on whenever I drive on the highway (sometimes within a few miles other times after about 20 minutes of driving). Melton1234 · Registered. Periodically, you also should test the "check engine" light and other dashboard warning lights. Get a friend or partner to alert you if you begin doing any of the subsequent:stand with one lower-leg wrapped across the otherremain within the edges on the 1000 Loans Needed shoesmaintain touching the nasal area, mouth. > > I am going to take it in for more extensive. Has anyone had this problem, and if so, can you advise me how I can get my check engine light fixed. I have two very intermittent problems: 1. The number of flashes represents the trouble code. Acoustics of swirling flow in a variable area pipe. The first step should be to figure out why the check engine light came on in the first place as. About 100 miles down the road, the check engine light came back on. After several. Sounds nearly impossible to narrow it down if the list is that big. But I still have a check engine light issue. Buick Engine Light Questions And Answers. When the check engine light comes on with the traction control light the automatic transmission will not shift beyond 4 gear. 7L V6 ENGINE, 16" X 7. All trouble codes are sent out as a series of flashes. The diagnostics suggested a lose fuse, or wiring problem. The following procedure will allow you to read codes and reset check engine light on Acura cars. If it persists you may need a new gas cap. Could be a weak ignition coil Check for fuel and spark. I've never got a check engine light as the same time as TRAC OFF. Then it ran rough, like a cylinder was missing (misfiring) and the check engine light came on, then started blinking. I took the truck to advance auto today to get it scanned- it pulled a P0300 code- random/multiple cylinder misfire. Melton1234 · Registered. The check engine light was not supposed to turn off while the diagnosis is not ready. We have taken it to the dealer several times, but all they can say is keep bringing it back. So I did and a few days later the check engine light came back on and it's still saying I need to reset the check engine light. Intermittent Abs Light. If the check engine light does come back on then the scanner will show you that bad code again. I have a s-10 2. A controlled environment sealing apparatus includes a reciprocating seal head positioned above an intermittent conveyer (20) carrying product-filled trays (18), a film feeder (14) to dispense film between the tray and reciprocating seal head, and at least one seal head gassing assembly (26) positioned in the seal head and oriented to direct a flow of controlled environment gas through a cut. A malfunction within the system will illuminate a check engine light. At first, the engine was cold and it wasn't doing it at all, even when I was driving up to 30mph and releasing the gas. I turned the car off, and. Tried to use an obd1 scanner but it wouldn't work so I did the jump wire trick and counted the flashes I. 1st gear blip of maybe 1/3 throttle just to hear the KB. The transmission shifts fine, and the transmission fluid looks good. so here it goes. 3 and around 29,000 miles. When there is no change in O2 sensor reading in a certain amount of time, the CEL comes on. These conditions mean you should pull over and shut off the engine as soon as you can find a safe place to do so. Once warm throws a CEL and limp mode mostly after cracking the throttle. If you use your 100 Loans Today With Very Bad Credit impact intermittently, a large tank is fine. And it is scary to drive on the road. I also started noticing that my engine felt like it wanted to cut out intermittently when I would come to a stop (slow or fast, didn't matter). If the light is flashing, take your vehicle in IMMEDIATELY to be diagnosed and inspected--a flashing light indicates a serious problem with one of your vehicle's components. Support this group and join the ads-free movement to make online forums a better place. CAFE), and more. So I hooked the scanner up to my car and it said for me to reset the check engine light. The check engine light (service engine soon) comes on and stays on when a problem is detected by. This happens most often in the summer warmth/heat due to increased evaporated fuel fumes from the tank rising thru the fuel filler tube. I took the truck to advance auto today to get it scanned- it pulled a P0300 code- random/multiple cylinder misfire. Didnt come on at all yesterday and is very intermittent. Intermittent control panel nonillumination. Try tightening your gas cap. Answer - I have a 2012 Toyota Sequoia and the Check Engine light came on and then the Trac Off light came on. I own a 2003 Honda Accord V6 EX. Intermittent Check Engine Light: If the check engine light on your 2008 Impala is intermittent, try to take note of the conditions when this happens. If the check engine light comes on: Look for a serious problem that requires immediate attention. How to diagnose a check engine light that flashes. Next they replaced my thermostat. Jump to Latest Follow 1 - 5 of 5 Posts Once the car is warmed up, it seems that every other time she starts it, the light goes on. Does that mean the second the check engine light comes on. The engine oil warning light will flash few times intermittently while car slow down at traffic light The engine oil pressure sensor is replaced, but the problem is not fixed. The check engine light intermittently comes and goes. Local Check Cashing Centers Just like green and dark tea, oolong teas best from your first flush, once the weather is less severe and the tea has already established more rainfall. It is very intermittent but has been throwing a PO455 code for several years now. that is the only thing bad that causes the light to come on and off if the light comes on while starting the engine and stays on then you would need to have the engine checked. At idle it sputters and sounds more like a little boat engine to me. Consequently, the Check Engine light on an OBDII-equipped vehicle may come on when there is no apparent driveability problem, or it may not come on even though a vehicle is experiencing a noticeable driveability problem. My check engine light, TCS off, and SLIP lights are on. In the afternoon, when the day is warmer, the check engine light stays off. It feels like (when the stutter occurs) a sudden loss of gas to the engine, and ends up "looking" like I am a newbie stick driver. The check engine, trac off and vsc trac lights all came on at once while driving yesterday. which indicates that there might be a known glitch in the computer on early Mazda3s (2004 was the first year) that can cause P0128. on while at idle speed beyond 3-4 minutes & shuts off after you. So you see that infamous glow on your instrument cluster in your BMW, yep, it’s your check engine light, and it’s on. I change the ECU from another vehicle. The largest 4Runner community in the world. I turned the car off, and. Check engine light, vsc off, vcs trac lights are all on and vehicle is nearly impossible to drive in the rain. 5 hours into trim I noticed the check engine light came on. As soon as the engine speed comes up above that, it goes out, and stays out. Dealers believe it is coming from the electrical harness. When I first start up and fro about the first 20 minutes of driving, the turn signals will not always work. I had been able to start my car up right away until last week. 2015+ F150 - Feature or problems? Auto start/stop and heated steering intermittent - Sometimes at a red light, the truck shuts down and then restarts when brake is released, and other times it does not. 140000 miles. After several. The check engine light keeps coming on intermittently and is not throwing any codes. Has anyone had this problem, and if so, can you advise me how I can get my check engine light fixed. Codes pointed to oxygen sensor, and was replaced twice. Have you ever wondered why the Check Engine light comes on? And more important, have you ignored the Check Engine Light thinking it will take care of itself?. Leave it on for at least 30 mins before washing this Start Up Business Loans No Credit Check off with hot (not hot) water. Check engine light on intermittently also. So my check engine light for my Honda came on. 3 and around 29,000 miles. Bitmap choices. It then rides perfect. The most recently reported issues are listed below. If the engine is running and stalls or stops for any reason with the key on, the MIL will be lit and no Continuous Memory codes will be set. Stopped to get something to eat. '08 odyssey with 130,000 miles. One day I got in the car and before I put the key in the ignition there was a clicking noise inside the car and the check engine light went out. So I've notived that once in a while, when hauling only, I will get a loss of power, the check engine light will come on, and there are four fuel system codes. You may have an intermittent problem, so when the on board diagnostics system checks it - sometimes it checks ok within the parameters set, and sometimes it's not, which triggers the check engine light to come on. If you have an 03 or 04 Silverado, Sierra, Avalanche, Tahoe, Yukon, Denali, Escalade or Suburban and are experiencing intermittent power failure of your whole cluster (but turn signals and check engine light still work) please be aware that this issue IS NOT covered under our warranty. This is second time I've had this issue (last time 4 months ago; about 3K miles). The wire diagram in the FSM will show the color. The check engine light on my 2009 G6 has been coming on intermittently. Instructions. If anything goes wrong with the engine, the computer will illuminate the check engine light (CEL). The engine oil warning light will flash few times intermittently while car slow down at traffic light The engine oil pressure sensor is replaced, but the problem is not fixed. I've been having a problem with my car the last week, it drives fine and no worries in the heat but randomly wether it be 20 mins of driving or driving all day i'll get a splutter or rough running for a few seconds with a check engine light and it'll be fine again afterwards and rarely it will stall. Check engine light has never come on. The dry air and heat definitely seem to have made it dissappear. Intermittent Transmission Downshift. If the weather is above 73 and I sit at a red light , when I take off the motor dies but the fuel tank has to be at half full or less. The dry air and heat definitely seem to have made it dissappear. Check engine codes get thrown when the car's computer detects certain conditions over a specific period of time, or a specific number of drive cycles. When the light is on I have no wiper blade, cruise, engine break, blower/ thermostat, turn signal. When I first start up and fro about the first 20 minutes of driving, the turn signals will not always work. Hey I have a 2000 prerunner v6. If the problem persists, the code will reset and the Check Engine Light will come back on. He has done about 2000km and the light does not come on every ride. I Have 21,000 on mine. I have a s-10 2. Then it ran rough, like a cylinder was missing (misfiring) and the check engine light came on, then started blinking. Hit a bump, get stuck in mud or snow, the TRAC OFF light come on. Everything seemed to work fine after that for several days. check engine light comes on goes off intermittently. Mechanic #2 said timing belt was fine, replaced spark plugs and that fixed the misfiring but a week later the check engine light was back. A/C was running fine but noticed a pattern. You may have an intermittent problem, so when the on board diagnostics system checks it - sometimes it checks ok within the parameters set, and sometimes it's not, which triggers the check engine light to come on. 2 weeks ago the check engine light came on and it began to run poorly, I pulled the codes. Ended up having to use my auto-start to have the car run for 10 minutes every two hours so I wouldn't have to warm up the car for 15 minutes in really cold weather. The lights come on, seems like the flasher just doesn't go on and off. After that all was fine for a week or so and then the light went back on, intermittently this time, but still on. I've got a 93 Isuzu Trooper that is giving me a check engine light intermittently in the morning. It has been acting up for the past 2 months. All trouble codes are sent out as a series of flashes. Average failure mileage is 47,000 miles. Last Oct/Nov the check engine and check VSC lights came on. Local Check Cashing Centers Just like green and dark tea, oolong teas best from your first flush, once the weather is less severe and the tea has already established more rainfall. Intermittently my check engine light comes on and it shows engine reduced power and it starts put-putting and i can't accelerate. 2008 Tundra Check engine light, Traction control Icon, 4 LO light, and VSC Off light. It is early 95 and has the Chrysler 1 diagnostic connector instead of the OBD 2 connector. The check engine light intermittently comes and goes. The lights both come on at the same time, and it happens about once every 2-4 weeks. Take the vehicle to a mechanic or perform the necessary repairs. which indicates that there might be a known glitch in the computer on early Mazda3s (2004 was the first year) that can cause P0128. After checking with multiple sources online and by phone, it appears the "skid control ecu with actuator" is the problem and this part runs over $2000 dollars!. Welcome to the Chevy engine light Question and Answer Page! This page should save you some time from submitting a duplicate question and having to wait for a response. Codes are triggered based on a series of events and those events can vary by manufacturer, year, engine configuration, emissions standards (Federal vs. Flashes a few times then stays on for about 30 seconds but the engine doesn't die. I have a 2004 Jeep Cherokee Laredo. How do I rule out intake or exhaust leaks? Like I said before the Check Engine Light is intermittent, and the code that came up is P0159 just want to check all bases before I repalce anything, there is close to 200,000 miles on it so I hoping it is just the sensor! Thanks Again. When there is no change in O2 sensor reading in a certain amount of time, the CEL comes on. The light was flashing like my ABS was engaged but i hadn't hit the brakes. Any ideas or suggestions? I have already checked the standard places I. While the light says “check engine” the reality is that it could be 100 different things that are triggering the fault causing the light to go on. 2004 ford ranger pickup 4. My 2004 Honda Odyssey's check engine light is on, and the TCS light comes on intermittently. It has been acting up for the past 2 months. For example, does it happen when you accelerating, driving on the highway or does it appear at low speeds? This will help your mechanic evaluate the issue. Where do I. I have a 2015 1500 with the 5. Take the vehicle to a mechanic or perform the necessary repairs. Has anyone else experienced getting a check engine light about 20-40 miles after fueling up? I started experiencing that several months back and determined that it would go away if I reset the fuel cap. 1) if the coolant temp light comes on, shut off the engine ASAP 2) if the oil warning light comes on, shut off the engine ASAP 3) if a FLASHING MIL/CEL comes on, shut off the engine ASAP ASAP means driving to the berm of the highway right now and not waiting for the next exit. 2005 Mitsubishi Galant ES. Engine Light Comes On Intermittently. The video above shows how to locate the on board diagnostics (OBD) plug on your 2011 F-150, how to read the trouble codes and how to reset or clear the check engine light using a scanner on your F-150. clear the codes). com Car Chat > Ford > Mustang > Mustang Problem Diagnosis. '97 740 il A few weeks back, the 'check engine' light appeared. The light did not go away, but a few weeks later, the check engine light would blink intermittently, usually when I am accelerating. Off Topic Section Regional Forums. The video above shows how to locate the on board diagnostics (OBD) plug on your 2008 E350, how to read the trouble codes and how to reset or clear the check engine light using a scanner on your E350. Check engine light comes on when gas cap is loose or completely missing, spark plugs or plug wires are damaged, vehicle has a bad catalytic converter, oxygen sensor needs to be replaced. The check engine light is an irritation for many drivers, but it gives you essential information about your car and shouldn't be ignored. Mechanic #2 said timing belt was fine, replaced spark plugs and that fixed the misfiring but a week later the check engine light was back. What would make the battery light come on intermittently? - 2005 Mitsubishi Galant ES. When I start the truck no check engine light and it drives fine, after a little while of driving the check engine light comes on and after some time the truck acts crazy and like bogs down quite a bit and even at times if you floor it, it diesn't really move just crawls at like 15 mph. I've had my truck now going on 3 years this past 4th of july, ive been having issues with my USB port and 110v Plug not working tried using new cable for Apple Car Play and still no luck, i called dealership and was told i am out of warranty (of course) and have to pay $199 just for inspection. So if my check engine light comes on occassionally it could point to any one of the problems HARLEYMANIAC listed? I have an 01 carbed Dyna and the light comes on every once in a while and goes off right away. When the light comes on, it acts like it looses power, and it acts bogged down. Questions: 1. 2000 Jeep Cherokee intermittent engine cut-out Intermittent engine cutout: Paid $200 and replaced that and still kept tripping "check engine" light. If the engine is running and stalls or stops for any reason with the key on, the MIL will be lit and no Continuous Memory codes will be set. Ive had a Check engine light on my coach for a few months; its been running like a top since we had the alternator replaced back in September. Sometime it will again go off before I fill it. From a full stop, slams into gear. How to Reset a Check Engine Light. The check engine light can be a bane or boon when it comes to owning a car, especially considering hundreds of things could trigger it. Where do I. The first step should be to figure out why the check engine light came on in the first place as. Pull over, retighten it, and take a look at the cap to. on while at idle speed beyond 3-4 minutes & shuts off after you. No current or historic codes. Bike is a 2007 fxd with the original battery and 48k. I have a 1998 Lexus LS400. One mornig on teh way to work I noticed it stumbled while taking off from a stop sign. As I slowed down the light stopped, I then shut the truck off, then restarted and went on my way. In some cases, it may be possible to turn the light off by using a diagnostic scanner, which attaches to the car and provides information on what has caused the light to come on. Then, if a problem is found, the check engine light gets turned on, and a trouble code gets set in the engine computer. The code reader showed P0440, so I tried replacing the gas cap, as this seemed to be a simple way to start. I have a 2003 Dakota 4x2 w/4. Has anyone had this problem, and if so, can you advise me how I can get my check engine light fixed. The check engine light in my car is cycling on and off (on for a week, off for a week). I took the gas cap off and made sure it was well tightened when I put it back on and the lights remained on. Turn the ignition switch to the ON position and wait approximately 8 seconds for the check engine light to start flashing. A KOEO test functions that fan properly. If the check engine light comes on and sets p0440 evaporative emissions system leak and the gas cap is found to be loose, tightening up the cap and a few drive cycles with the(ECM) Engine Control Module seeing no failure to pass the test the ECM will turn the light off. The following procedure will allow you to read codes and reset check engine light on Acura cars. After leaving the shop I was doing about 80k up a fairly long hill and the engine suddenly faltered and stumbled. Check your dashboard gauges and lights for indications of low oil pressure or overheating. I've never got a check engine light as the same time as TRAC OFF. Most often check engine lights that go on and off around the time you add fuel to the car are gas cap closure or once in a while gas cap seal defect problems. Will tear down and check connectors and follow the troubleshooting steps in the factory manual. I have intermittent check engine light p0420. The signal is not constant and within parameters with the ignition key turned off.