For a while some of registers are caution (yellow) until you put a certain distance. Drive the car like you normally do for another week. How many miles do I have to drive for all registers to be reset. Put the vehicle in gear, drive up to 35mph, and come to a complete stop. It is true that your car will not pass inspection if the check engine light is on. How long should it take to re-calibrate for extra air? 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. I did a search and came across several answers, 50 miles, 300 miles and 500 miles among the many. I've seen a car that needed over 1,000 miles put on before the readiness codes were gone. 2002 Dodge Ram 2500 Diesel 4x4. 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. So should I reset the ECU? After resetting changing a sensor, clearing toruble codes, or resetting the ECU (unhook battery, etc. 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?) What difference would this make if they are sticking the tester in the exhaust pipe? They said any driving would do it, city or highway, as long as it was 80-100 miles since battery replacement. The first requirement of the drive cycle is that your engine must be at … I was told that it was cumulative miles. In this first step, you’ll slowly accelerate to (generally) 25 miles per hour. I had something like that happen after I had replaced a battery. There is no "drive X miles to reset". The engine may run rough or idle poorly right after ECU reset. 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. The only "reset" you or I can do is to disconnect the battery for a few minutes. This should just be natural city driving for a few minutes. to know that it now needs to lean things out. I purchased a 2005 Altima 2.5 SL, auto tranny, with 26,000 miles and have put about 6,000 miles on it. Not a daily driver vehicle. 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 … Submitted: 10 years ago. See if it changes. It would either come out clean or not clean. 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? After you have completed the freeway trip, drive through the city streets for a repeat of the second part of Step Two. Maybe your mechanic or a dealer could do the same for you. Sometimes an O2 sensor fails, and you need to replace it. It's some sort of computer reset afaik. 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? the gauges will make a sweep. Jump to Latest Follow 1 - 9 of 9 Posts. I think though it would be safe with a good half an hour of freeway driving after you complete your two trip reset. However there is more to it than simply turn… The first phase will be a short city driving test. 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. _____ when i reset my ecu to clear a code it took a few days in order to pass the emissions test. Why? idk if that helps any Honestly, if it was going to pass smog, it should have after a week of driving. Disconnected battery. ECU re-learning after reset. I just today took my 2002 Subaru in for smog test. (RESOLVED - Click To View) I took my car to a smog check station and was asked if the battery had been changed. S ... How many KM's Miles do i have to drive and at what speed? It might take a day or two of driving in traffic before the engine will settle down again. drive it about 30 to 50 miles,you reset the computer when you replaced the battery. Certain parameters need to be met and multiple drive cycles need to be made in order for the car to run certain tests. So, I’m going with that. Porsche Boxter Drive Cycle - How to Complete the OBD II Emission Monitors . 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. 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. 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. It is always recommended that you reset you ECM after adding a mod do that ECM can imediately take advantage of the modification. Anytime you stop the vehicle — for stop signs, traffic, or other … Q: Car does not run well, after installing cold air intake. Reset car computer. All cars are different. Etc.. like a ritual with exact timing . (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. Took 3 days of city driving for it to be ready. 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 I am working slowly through all of my boost leaks (work+family=not much time). ... you need to wait 30minues at the least. I'm wondering if it would be worth it to reset the computer by disconnecting the battery for 5 minutes. No check engine light on but they told me it had to be driven 80-100 miles so the memory (history) reset. I don't drive my car much so I hadn't driven it the required amount of miles for the computer thing to reset. A. Google 'drive cycle after reset'. I replaced the thermostat and went to pickup a spare tire. The ECU then adjusts the air-to-fuel ratio to optimize the fuel combustion. How to Reset Your Car’s Computer, Old School Scotty Kilmer, DIY and car review. Also do not exceed 3,000 rpm or 60 mph during any portion of the drive cycle. How many miles of driving does it take for a chrysler to reset a reflashed/refurbished pcm. Did that and the car passed no problem. My car has 111000 miles… after typing i just realized how old this thread was . It had been awhile back. After 50 miles, all monitors were ready. Again, don't roll through the stop and make sure to accelerate normally. I reset the ECU, and now the car runs rough! Category: Dodge. If your trying to reset it the hard way, it takes 20 cold starts to reset, a code reader is way faster. I discovered the problem and with my OBDII instrument, cancelled the warning lite (reset the registers in the truck computer). 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. 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. Need echeck soon. Prior to starting the driving cycle ensure your Boxter has only between 1/4 and 3/4 of fuel in the gas tank. 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. Start your Porsche Boxter and let it idle for approximately 2 1/2 minutes. 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. 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. They first told me to drive it down the highway for a lil while so i did, came back and still wasnt ready. I put 38 miles on mine last time before emissions testing (it had been sitting with the battery disconnected) and it passed. These codes will guide you towards the root of the problem and … I have a 1998 GMC Sierra 1/2 ton truck, 6 cylinder. The amount of driving required depends on the particular model and perhaps the type of driving you do, whether stop-and-go or highway. ), it will take some amount of driving before everything is considered "ready." 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. posted by southern_sky at 5:19 AM on January 29, 2015 [2 favorites] 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. 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. Before that, I drove over 400 miles following the manufacturer drive cycle many times without hope. 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. 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 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.. then you need to drive your car so the ECu can relearn your driving habits. The road test of a typical drive cycle involves a highway and two road driving sessions. Engine analyzer shows fault with mass airflow sensor. Step Four: More City Driving. Starting the driving cycle ensure your Boxter has only between 1/4 and 3/4 of fuel the... January 29, 2015 [ 2 favorites ] all cars are different it idle in the computer... Last time before emissions testing ( it had been sitting with the battery for 5.... 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