There are other possibilities that can cause fuel trim fault codes to log. This video is designed to give good information in a short time frame that can help you diagnose the fault for yourself, in this case a BMW E46 (it is not meant as a crossover for all vehicles with fuel trim faults) Fuel Trim fault codes are logged if the fuel trim correction limits are exceeded. Meaning you can list the following as possible causes in +/- fuel trims. **Multiple fuel delivery/pressure related faults, EVAP systems (seen in a recent video) Map Sensor (seen in another video), Air Mass fault,compression faults, ignition faults, Oxy Sensor, any leak before the upstream Oxy Sensor** I wanted to list this in the comments for others that may want/need the info. Thanks for watching
Thanks mate, The classic air entry and in the best place! Good score. With all that movement and age, they should almost be classified as a service item. 😉
I have a 2002 325i, and just replaced spark plugs and engine mounts. The shaking is not as bad, but is still there. Acceleration is close to what it should be, but not quite. Will be checking hoses today after work. Hopefully I find the issue
Guess Ill go look for vacuum leaks too just incase. Mine gave codes of maf and intake air temp. Signals respectively and the car runs rough, idles at around 400rpm and uses double the amount of fuel compared to before. I changed the maf but the symptoms stayed the same. I havent read codes again and I also think my scanner is pretty poor as it gave zero misfire codes even though it even ignites in the exhaust manifold occasionally and puffs black smoke when reved. Edit: m43b19 engine in mine
2:22 Could be too much air or not enough fuel eg low fuel pressure.... could even be a faulty plug or coil misfiring, causing unburnt fuel and oxygen to pass through to the oxygen sensor, making the car think the mixture is too lean...
I do not want to over complicate my videos for a DIY user, I may make a video in the future that relates to just fuel trim understanding and diagnosing. I am aware of the huge amount of possibilities that can cause fuel trim fault codes to log. Fuel Trim fault codes are logged if the fuel trim correction limits are exceeded. Meaning you can list - fuel related faults, EVAP systems (seen in a recent video) Map Sensor (seen in another video), compression faults, ignition faults, Oxy Sensor, any leak before the upstream Oxy sensor. We use experience and info to make real time decisions, these can turn into a really quick find and fix like in this video (rough idle that evens out when increasing RPM is a high % chance of an intake leak) most times we need to go much further and test many components but sometimes we get lucky :) Thanks for watching Aman, I appreciate your input.
I had the same problem with my intake boot (holes and cracks) I changed it out and now it seems to have throttle hesitation and has died on me twice when I try to excelerate from a stop light Does the ECU have to relearn after replacing that boot correcting the air flow?
Amazing stuff boss. My e46 saloon starts of very sluggish then as you pull away accelerating the power picks up. It's really irritating especially on traffic where most cars leave you stranded!!! What could this be?
Ger thanks for your videos ..im just after finally finding your channel ..top notch on the whole thing brother kudos for explaining everything in such an easy to understand type way for noddies like myself who find it hard to learn in the first....i hope you keep posting them as there so well put together and the quality is excellent both in a visual perspective 🤥🤓 and the sound is pretty good too, i find these videos very educational , and genuinely hope i see hundreds of videos here some day ..now that woukd be tge mother of all mothers of you tube content bro....god bless the hands, head and works you do...as without it alot if us on here be none of the fucking wiser ...anyways chop chop get back to work pal...chat one day maybe ..Ger from Galway city.
HELLO THERE, I JUST FIND YOUR VIDEO PRETTY MUCH INTERESTING. HERE IS MY CAR'S PROBLEM: HAVE a 2003 325i. PRETTY MUCH SIMILAR LIKE YOU HAVE SHOWN HERE. LOSING POWER WHEN I PRESS THE GAS PEDAL DOES NOT GO OVER 50. ALSO WANT to MENTION THAT SPEETDOMETER DOESN'T WORK. DOESN'T HAVE a CD PLAYER. THIS CAR WAS parTked OVER 2 YEARS. SO I JUST STARTED TO MAKE THE OIL SERVICE. IF YOU READ MY MESSAGE I REALLY APPRECIATE, IF YOU'LL BE KIND TO TELL ME, WHAT KIND OF SCANNER DO YOU RECOMMEND ME. NOT EXPENSIVE ONE, NEITHER CHEAPEST ONE. . THANK YOU 👍>by the way I'm a new subscriber 👍
I got this when I scanned my E46 , no powertrain DTCs or freeze frame data is presently stored in the vehicle's computer .. what does this mean ? Btw i don't have a check engine light on my car
There are other possibilities that can cause fuel trim fault codes to log.
This video is designed to give good information in a short time frame that can help you diagnose the fault for yourself, in this case a BMW E46 (it is not meant as a crossover for all vehicles with fuel trim faults)
Fuel Trim fault codes are logged if the fuel trim correction limits are exceeded.
Meaning you can list the following as possible causes in +/- fuel trims.
**Multiple fuel delivery/pressure related faults, EVAP systems (seen in a recent video) Map Sensor (seen in another video), Air Mass fault,compression faults, ignition faults, Oxy Sensor, any leak before the upstream Oxy Sensor**
I wanted to list this in the comments for others that may want/need the info. Thanks for watching
Thanks mate,
The classic air entry and in the best place! Good score. With all that movement and age, they should almost be classified as a service item. 😉
Thanks Max,
Sometimes work goes smoothly 😂
Let's not talk about the other times 🤔🤣
@@GerardBurkeBurkesGarage Ain't that the truth!
very clear and informative - I hope this helps... I just did plugs and coils and my rough start persists. Thanks again!
I have a 2002 325i, and just replaced spark plugs and engine mounts. The shaking is not as bad, but is still there. Acceleration is close to what it should be, but not quite. Will be checking hoses today after work.
Hopefully I find the issue
Thanks for video and FT advice. Anything made of rubber or plastic on these engines should be replaced as a matter of course.
Thank you ur a life saver!!! Took apart the top half of my engine b4 seeing this 😂😂😂😂 i guess it needed a clean anyhow! Thanks again happy new year!!!
🤣🤣 Cheers Gary 👌👍
It would be very nice if you once had time to make a video with a more detailed explanation on fuel trim. If I had time of course. Thanks so much .
Very well explained Gerard , invaluable, thankyou:):)
Thanks Pat, tried to pack in a lot of usable info in a short time frame 🙏👍👌
Guess Ill go look for vacuum leaks too just incase. Mine gave codes of maf and intake air temp. Signals respectively and the car runs rough, idles at around 400rpm and uses double the amount of fuel compared to before. I changed the maf but the symptoms stayed the same. I havent read codes again and I also think my scanner is pretty poor as it gave zero misfire codes even though it even ignites in the exhaust manifold occasionally and puffs black smoke when reved.
Edit: m43b19 engine in mine
Great fix and explanation
Thank you 🙏👍👌
2:22 Could be too much air or not enough fuel eg low fuel pressure.... could even be a faulty plug or coil misfiring, causing unburnt fuel and oxygen to pass through to the oxygen sensor, making the car think the mixture is too lean...
I do not want to over complicate my videos for a DIY user, I may make a video in the future that relates to just fuel trim understanding and diagnosing.
I am aware of the huge amount of possibilities that can cause fuel trim fault codes to log.
Fuel Trim fault codes are logged if the fuel trim correction limits are exceeded.
Meaning you can list - fuel related faults, EVAP systems (seen in a recent video) Map Sensor (seen in another video), compression faults, ignition faults, Oxy Sensor, any leak before the upstream Oxy sensor.
We use experience and info to make real time decisions, these can turn into a really quick find and fix like in this video (rough idle that evens out when increasing RPM is a high % chance of an intake leak) most times we need to go much further and test many components but sometimes we get lucky :)
Thanks for watching Aman, I appreciate your input.
I had the same problem with my intake boot (holes and cracks) I changed it out and now it seems to have throttle hesitation and has died on me twice when I try to excelerate from a stop light
Does the ECU have to relearn after replacing that boot correcting the air flow?
Amazing stuff boss. My e46 saloon starts of very sluggish then as you pull away accelerating the power picks up. It's really irritating especially on traffic where most cars leave you stranded!!! What could this be?
Ger thanks for your videos ..im just after finally finding your channel ..top notch on the whole thing brother kudos for explaining everything in such an easy to understand type way for noddies like myself who find it hard to learn in the first....i hope you keep posting them as there so well put together and the quality is excellent both in a visual perspective 🤥🤓 and the sound is pretty good too, i find these videos very educational , and genuinely hope i see hundreds of videos here some day ..now that woukd be tge mother of all mothers of you tube content bro....god bless the hands, head and works you do...as without it alot if us on here be none of the fucking wiser ...anyways chop chop get back to work pal...chat one day maybe ..Ger from Galway city.
Very informative...thank you
HELLO THERE, I JUST FIND YOUR VIDEO PRETTY MUCH INTERESTING. HERE IS MY CAR'S PROBLEM: HAVE a 2003 325i. PRETTY MUCH SIMILAR LIKE YOU HAVE SHOWN HERE. LOSING POWER WHEN I PRESS THE GAS PEDAL DOES NOT GO OVER 50. ALSO WANT to MENTION THAT SPEETDOMETER DOESN'T WORK. DOESN'T HAVE a CD PLAYER. THIS CAR WAS parTked OVER 2 YEARS. SO I JUST STARTED TO MAKE THE OIL SERVICE. IF YOU READ MY MESSAGE I REALLY APPRECIATE, IF YOU'LL BE KIND TO TELL ME, WHAT KIND OF SCANNER DO YOU RECOMMEND ME. NOT EXPENSIVE ONE, NEITHER CHEAPEST ONE. . THANK YOU 👍>by the way I'm a new subscriber 👍
I got this when I scanned my E46 , no powertrain DTCs or freeze frame data is presently stored in the vehicle's computer .. what does this mean ? Btw i don't have a check engine light on my car
thx!
Thanks man
👍👌
Hello where is your garage based, if I want to bring my car to you?
I am in Perth, I do not have my own workshop in Ireland anymore I moved over a year ago to Western Australia.
You want the short term fuel trim to be near 0, not the long term.
quick and dirty no smoke pro needed lol
Also no smoke pro available in my workshop 😜