It had been awhile back. There is no "drive X miles to reset". after typing i just realized how old this thread was . I had something like that happen after I had replaced a battery. The first requirement of the drive cycle is that your engine must be at … Once you've replaced your vehicle's O2 sensor, you'll need to reset the ECU so it can properly gather information from the new O2 sensor. So, I’m going with that. Also do not exceed 3,000 rpm or 60 mph during any portion of the drive cycle. Sometimes an O2 sensor fails, and you need to replace it. Submitted: 10 years ago. They first told me to drive it down the highway for a lil while so i did, came back and still wasnt ready. posted by southern_sky at 5:19 AM on January 29, 2015 [2 favorites] It might take a day or two of driving in traffic before the engine will settle down again. The only "reset" you or I can do is to disconnect the battery for a few minutes. Put the vehicle in gear, drive up to 35mph, and come to a complete stop. Engine analyzer shows fault with mass airflow sensor. I don't drive my car much so I hadn't driven it the required amount of miles for the computer thing to reset. I reset the ECU, and now the car runs rough! I'm wondering if it would be worth it to reset the computer by disconnecting the battery for 5 minutes. I have a 1998 GMC Sierra 1/2 ton truck, 6 cylinder. (For example, after leaving the car overnight) Idle for 3 minutes with electrical equipment on (A/C, headlights, and rear defroster turned on) Turn off A/C and rear defroster. See if it changes. drive it about 30 to 50 miles,you reset the computer when you replaced the battery. Maybe your mechanic or a dealer could do the same for you. Prior to starting the driving cycle ensure your Boxter has only between 1/4 and 3/4 of fuel in the gas tank. to know that it now needs to lean things out. The ECU has to run through several sensor tests that require certain conditions be met, like reaching a certain temperature, so many miles driven, key on and off cycles, speeds reached, rpms reached etc. If your trying to reset it the hard way, it takes 20 cold starts to reset, a code reader is way faster. How long should it take to re-calibrate for extra air? However there is more to it than simply turn… The engine may run rough or idle poorly right after ECU reset. Reset car computer. How to Pass Inspection & Complete a Drive Cycle: In this video I'll show you how to complete a drive cycle and pass inspection after turing off your check engine light. After driving 10 miles to the inspection ststion they plugged me into their machine they got "not available" codes for a number of readings, which I understand is what they see when a battery has been disconnected and the ECU reset. Reset computer. I reset my 01 rodeo this tues. nite, took it in wed. ,they failed it because it was too soon after resetting :mad: took it again friday afternoon and the same thing.. So should I reset the ECU? Google 'drive cycle after reset'. After 50 miles, all monitors were ready. I purchased a 2005 Altima 2.5 SL, auto tranny, with 26,000 miles and have put about 6,000 miles on it. It is always recommended that you reset you ECM after adding a mod do that ECM can imediately take advantage of the modification. If the ECU has lost its memory it will revert to the factory settings it had when it was new, and only need a couple of dozen miles to regain any additional information. Again, don't roll through the stop and make sure to accelerate normally. ), it will take some amount of driving before everything is considered "ready." ECU re-learning after reset. I think though it would be safe with a good half an hour of freeway driving after you complete your two trip reset. In addition after this since you probably have an old sluggish catalytic converter it will be saturated from running rich (ECU IN DEFAULT MODE) so thats where some folks talk about the 200 mile thingy. What difference would this make if they are sticking the tester in the exhaust pipe? Go up to about 35 to 40 mph a few times and then maintain a city speed of 25 mph before slowing down to stop. _____ when i reset my ecu to clear a code it took a few days in order to pass the emissions test. It would either come out clean or not clean. I just today took my 2002 Subaru in for smog test. Did that and the car passed no problem. the gauges will make a sweep. The road test of a typical drive cycle involves a highway and two road driving sessions. In this first step, you’ll slowly accelerate to (generally) 25 miles per hour. Porsche Boxter Drive Cycle - How to Complete the OBD II Emission Monitors . ... you need to wait 30minues at the least. (RESOLVED - Click To View) I took my car to a smog check station and was asked if the battery had been changed. I was driving 500 miles cycle and still couldn’t get smog ready after resetting the ecu the 2 monitors never goes a way the cat and 02s plus after driving cycle, pending code comes on for noX sensor I give up and took it to the smog station and it did passed with dose errors I replaced the thermostat and went to pickup a spare tire. After the check engine light is reset, how many miles do I have to drive a 1998 Mercury Mystique before the computer resets all monitors … read more ttiger79 Drive the car for at least 10 miles for the ecu to learn, if there is a problem with your vehicle then the check engine light will come back on and you can analyze the fault code that the ECM throws. All cars are different. The amount of driving required depends on the particular model and perhaps the type of driving you do, whether stop-and-go or highway. Before that, I drove over 400 miles following the manufacturer drive cycle many times without hope. I did a search and came across several answers, 50 miles, 300 miles and 500 miles among the many. And I went to the smog test only center again, but I was told to drive 100 miles to get car ready for the test. Drive the car like you normally do for another week. A. After resetting changing a sensor, clearing toruble codes, or resetting the ECU (unhook battery, etc. They said any driving would do it, city or highway, as long as it was 80-100 miles since battery replacement. Why? Honestly, if it was going to pass smog, it should have after a week of driving. I was wondering how many miles after resetting the ecu, via battery terminal removal, does one have to drive before the ecu can again be in a "ready state" to recognize CEL codes? How many miles of driving does it take for a chrysler to reset a reflashed/refurbished pcm. I've been running rich for about 1.5 weeks (120 miles, 3/4 tank of gas ), and I'm wondering if my ECU should be cleared after each leak fix since it can't detect rich condition (or can it?) I've seen a car that needed over 1,000 miles put on before the readiness codes were gone. After you have completed the freeway trip, drive through the city streets for a repeat of the second part of Step Two. Q: Car does not run well, after installing cold air intake. Etc.. like a ritual with exact timing . Disconnected battery. After reading this article you will have a better idea of how many miles you will need to drive your car to get the computer to reset, but more importantly, you will know the conditions required to get your car’s computer monitoring to reset. How to Reset Your Car’s Computer, Old School Scotty Kilmer, DIY and car review. S ... How many KM's Miles do i have to drive and at what speed? Start your Porsche Boxter and let it idle for approximately 2 1/2 minutes. I am working slowly through all of my boost leaks (work+family=not much time). I was told that it was cumulative miles. Certain parameters need to be met and multiple drive cycles need to be made in order for the car to run certain tests. Does anybody know how many miles or how much time is required after clearing the cel codes to pass emissions test ? They also let it idle in the parking lot for 15 minutes or so, no good. My car<1997, Toyota, Corolla> failed smog test a month ago and an auto repair shop did fixing and cost me $550. I had an engine warning lite. What you need to do may vary based on the make and model of your car - when this happened to me, my mechanic was able to print out a sheet for me with the specific drive cycle for my car. These codes will guide you towards the root of the problem and … Step Four: More City Driving. No check engine light on but they told me it had to be driven 80-100 miles so the memory (history) reset. My car has 111000 miles… I discovered the problem and with my OBDII instrument, cancelled the warning lite (reset the registers in the truck computer). Not a daily driver vehicle. For a while some of registers are caution (yellow) until you put a certain distance. It's some sort of computer reset afaik. Anytime you stop the vehicle — for stop signs, traffic, or other … I put 38 miles on mine last time before emissions testing (it had been sitting with the battery disconnected) and it passed. It is true that your car will not pass inspection if the check engine light is on. The ECU then adjusts the air-to-fuel ratio to optimize the fuel combustion. idk if that helps any Need echeck soon. Category: Dodge. Now if you have disconnected the battery to reset it, it takes time not miles, usually 20 minutes of normal driving for the system to relearn, this has to be done in … then you need to drive your car so the ECu can relearn your driving habits. Took 3 days of city driving for it to be ready. How far should I have to drive for the computer to reset itself after the battery has been disconnected in order for it to pass smog? 2002 Dodge Ram 2500 Diesel 4x4. Jump to Latest Follow 1 - 9 of 9 Posts. This should just be natural city driving for a few minutes. The first phase will be a short city driving test. How many miles do I have to drive for all registers to be reset. I was told it could not pass a smog test until the computer was reset; at a cost of $135.00.This car has always past before. The ECU now has default numbers in its trim memory - it has to adjust them to match the tune of your engine and its sensors and actuators. After driving 200 miles, today I went back to the smog test only center, but I was told to drive 100 miles more because the Catalyst monitor is still not ready.
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