Replacing BMW N51 EAC (Environmental Air Catalyst Sensor) | DIY Sensor Replacement Guide

Тәжірибелік нұсқаулар және стиль

Welcome to our channel! In this video, we'll guide you through the process of replacing the Environmental Air Catalyst (EAC) sensor on your BMW N51 engine. Let's dive in!
What is an EAC sensor?
What is the purpose of the Engine Radiator's Environmental Air Catalyst (EAC) Sensor? ... The EAC Sensor is there to prevent a catalytic-coated radiator that requires replacement in conjunction with performing some other repair from being removed and replaced with a standard non-catalytic coated engine radiator.
Eac Sensor part number 221905560080 $174
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BMW OEM Radiator with Eac Sensor $600
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PEAK OET Blue 50/50 Prediluted Antifreeze/Coolant $19
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Coolant Temperature Sensor with O Rings $12.99
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Radiator | Compatible with 07-10 BMW 328 08-13 BMW 128i without Eac Sensor $93
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Loctite 26324 4204 Clear Prism Instant Adhesive $31
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0:00 Intro
03:06 What is Environmental Air Catalyst (EAC) Sensor?
07:34 Sulev
08:51 What to look for when buying!
12:30 How to convert the sensor
22:38 Which drain plug to use
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🔧 Steps Covered in This Video:
Introduction - Importance of the EAC sensor and its function in the vehicle.
Preparation - Tools needed and safety precautions before starting the replacement.
Replacement Process - Step-by-step guide to removing the old sensor and installing the new one.
Testing and Verification - Ensuring proper functionality after the replacement.
✨ Why You’ll Love This Tutorial:
Save Money: Perform sensor replacement yourself and save on dealership costs.
Ensure Reliability: Keep your BMW running smoothly by maintaining critical components.
DIY Friendly: Detailed instructions make it easy for anyone to follow along.
💬 Join the Conversation!
Have you replaced the EAC sensor on your BMW N51 engine? Share your experiences and tips in the comments below! Don’t forget to like, subscribe, and hit the bell icon to stay updated with our latest videos.
👉 Subscribe for More BMW Content: / @pistonplay
🔔 Follow Me on Social Media:
Instagram: / royblinge90
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Thanks for watching and see you in the next video!
#BMW #DIY #Maintenance #EAC #BMW #N51

Пікірлер: 102

  • @junkerjorg2
    @junkerjorg25 ай бұрын

    I installed an aftermarket radiator with out knowing I had a EAC 328i! As such, that radiator didn't have the adapter space... it worked, but I quickly found out about the CHECK ENGINE light. Although I just replaced the radiator, I ordered the one from your link, and followed your instructions. IT WORKED! Although I went through 2 radiators, it was still cheaper than the BMW OEM ($600)! GREAT VIDEO BRO

  • @PistonPlay

    @PistonPlay

    5 ай бұрын

    Sorry you had to go through all of that man but I’m happy you got it figured out

  • @mykeyloves
    @mykeyloves Жыл бұрын

    Roy, this info in priceless. Just found a wet spot under my son’s 328xi which has a N51 and was doing some research and came across your video….priceless. You save us a bunch of $$$$. THANK YOU ROY!!!

  • @PistonPlay

    @PistonPlay

    Жыл бұрын

    Happy to help my friend

  • @greggumbs1935
    @greggumbs19357 ай бұрын

    Big thanks Roy...big thanks to you...the person that showed you ...and to the person that showed them... I'll do my part and show this hack to the next person!!

  • @colerobinson1187
    @colerobinson1187 Жыл бұрын

    Super informative video. Thank you

  • @OscarSanchez-jv3mx
    @OscarSanchez-jv3mx Жыл бұрын

    Not all heroes wear capes! Thanks, man! This was really helpful 👍👍

  • @Sam-xm4kd
    @Sam-xm4kd4 ай бұрын

    Thanks a lot for the video very helpful couldn’t find anything on the n51 radiator

  • @ibireallday4449
    @ibireallday4449 Жыл бұрын

    Thank you so much although I paid someone to put the radiator in I was able to rewire myself. Saved me so much $$$$$

  • @gabymaldo2424
    @gabymaldo2424 Жыл бұрын

    I did it bro,works great, thank you so much 💪💪💪

  • @PistonPlay

    @PistonPlay

    Жыл бұрын

    Happy to assist

  • @eiyekeye
    @eiyekeye24 күн бұрын

    Thanks!

  • @PistonPlay

    @PistonPlay

    22 күн бұрын

    I’m happy the same information was very helpful for you

  • @rachelleanglin9650
    @rachelleanglin9650 Жыл бұрын

    Hi there so I was at bmw for a diagnosis on different issue and they said I need a new EAC sensor and I then got my registration due letter right after and I need smog. So super happy to come across your vid and hope this works. I just want to ask do you know will it work on my car? 2009 328i. I looked under the hood and it says california sulev so I’m guessing it will but I wanted to check before I order the part. Thanks so much!!

  • @michaelroth7709
    @michaelroth77099 ай бұрын

    excellent video,what kind of glue do you use

  • @gpjstn
    @gpjstn Жыл бұрын

    This is amazingly informative! My CEL came on and after some research I found out my EAC sensor went bad. This video is exactly what I was looking for, thank you for creating this! Is it possible in any way to replace the sensor without having to take out the radiator though?

  • @PistonPlay

    @PistonPlay

    Жыл бұрын

    Yes the radiator has to space for the sensor so if you’re replacing the sensor for the first time there should be another empty spot there for you to buy the new sensor do the re-wiring and insert it

  • @94805Richmond
    @94805Richmond Жыл бұрын

    Thank you so much !!!! This was a lot of help ! The sensor cost me 195 :( at oreilys auto parts

  • @colerobinson1187
    @colerobinson1187 Жыл бұрын

    2008 BMW 328i 6MT here btw!

  • @jthunders
    @jthunders Жыл бұрын

    Good présentation. I was wondering why i have this stupid sensor in my car that makes the radiator $900 fron the dealer. We need more Jamaica every day in our lives

  • @johndoe-xx8wu
    @johndoe-xx8wu8 ай бұрын

    BMW hero thank you very much

  • @scottalston8670
    @scottalston8670 Жыл бұрын

    Thank you for the video Have a N26 Do you know if same part is used today - 2016 BMW 228i

  • @RoyBling

    @RoyBling

    Жыл бұрын

    Honestly, they’re supposed to be the same thing. The parts has never really changed but for me to confirm that I’m going to check right now and hit you back.

  • @RoyBling

    @RoyBling

    Жыл бұрын

    OK I found the exact sensor you need I’m gonna send you a link for it. If you’re planning to do the project yourself it’s not hard.

  • @scottalston8670

    @scottalston8670

    Жыл бұрын

    @@RoyBling thanks a million

  • @rahinskii

    @rahinskii

    7 ай бұрын

    ⁠@@RoyBlinghi, send me please part number of the sensor for n26

  • @nenuko03
    @nenuko036 ай бұрын

    small plug for bmw with transmission cooler . I have n51 sulev sport pkg that came with transmission cooler! so I need the short plug!

  • @salehdinkhah6854
    @salehdinkhah685410 ай бұрын

    Do you need to put the glue?

  • @lancejohnson4203
    @lancejohnson420311 ай бұрын

    Thanks. good video

  • @PistonPlay

    @PistonPlay

    11 ай бұрын

    HAPPY TO HELP

  • @cesarcarranza42
    @cesarcarranza422 ай бұрын

    can this be adapted to any radiator? I bought an N51 but the guy said he changed the radiator hence the code... little did I know that I think it has to be an special kind of radiator and I have my suspicions that he replaced it with the regular kind and not theone that comes with the n51s... So if I have a non N51 radiator, can I install this sensor and make it work or do I have to get another radiator? Also I just happen to have another bmw exact year (2009) and model (328 i) the only difference is the chassis (e90 vs e92), would it work if I exchange the radiator? I need this one to pass smog... thanks!

  • @PistonPlay

    @PistonPlay

    2 ай бұрын

    No, because there’s no sensor port on those other radiators There are some little holes that the sensor has to go into so you have to replace the radiator again

  • @MeadowviewRiko
    @MeadowviewRiko Жыл бұрын

    What kind of Mercedes is that sensor for? I’m trying to find it because it’s all out of stock but have no idea what’s model Mercedes

  • @PistonPlay

    @PistonPlay

    Жыл бұрын

    There’s a link in the description

  • @colerobinson1187
    @colerobinson1187 Жыл бұрын

    do you know if the manual trans piece for drain is crucial to using this radiator with a manual? i used the same one and used the shorter piece, maybe i broke it, but it is spewing coolant out of the little hole on bottom driver side. please help as i have no connection that needs to go there for my car

  • @PistonPlay

    @PistonPlay

    Жыл бұрын

    If you’re running a manual transmission, you need to use the manual drain plug inside the radiator it is critical when the plugs go in there’s certain channels inside the rod that it blocks off if you noticed one plug is longer than one automatic transmission requires more cooling than manual, so yes, it’s very critical

  • @colerobinson1187

    @colerobinson1187

    Жыл бұрын

    @@PistonPlay got her done today just need to replace the coolant level sensor now. these cars man!

  • @PistonPlay

    @PistonPlay

    Жыл бұрын

    @@colerobinson1187 I feel you with that one BMW is a car If you’re going to do some work in a specific area and you might think other things need to be taken care of just do it at the same time when I replace the radiator sensor. And the radiator I did the water pump thermostat. Vanos gasket. Everything that needed to be taken care of in the front. I change the hose, change the belt and just call it a day. Right now I need to do the oil catch pan gasket and I’m gonna buy the engine mounts to the replace them at the same time. Because I’m going to drop the sub frame.

  • @mattporto4530
    @mattporto4530 Жыл бұрын

    Nice vid man. I have a question. I bought my 328i this week and the guy sold me saying that he took to the dealer cause it had some lights on the dash, so they said that he has a bad catalytic converter. So me and my friend were checking with a computer and we find out that they replaced the radiator for another one with no sensor. My question is, while the ECA is a environmental catalytic thing, could that be the reason for the catalytic converter lights? Or you think it might be the bad catalytic converters bad? “My has 196k miles thanks

  • @RoyBling

    @RoyBling

    Жыл бұрын

    If your car is a sulev mode you will need to replace the radiator get the one with the sensor the way you can tell is there’s a sticker on the hood if your car is sulev then you definitely have a bad catalyst converter, but it would say something at lean in bank, 1&2

  • @PistonPlay

    @PistonPlay

    Жыл бұрын

    @@RoyBling this is correct

  • @mattporto4530

    @mattporto4530

    Жыл бұрын

    So I just changed the radiator today, bought the OEM with sensor, the codes went off. Even the bad catalyst converter. Let’s see… thanks man

  • @PistonPlay

    @PistonPlay

    Жыл бұрын

    @@mattporto4530 happy to help

  • @zeno9248
    @zeno9248 Жыл бұрын

    i bought CSF radiator but it when mounting the fan it won’t sit properly. did you have any trouble installing it?

  • @PistonPlay

    @PistonPlay

    Жыл бұрын

    If you bought the exact radiator that I have in the description, it’s a perfect fit there’s two plastic pieces you have to remove from the old radiator to put on the new one for the radiator fan to sit properly and if you try to install both at the same time, it’s going to be a tight fit. You should install one at a time. Sometime oil cooler lines block it from sitting down properly, so you might need to shift that out the way from the bottom. Make sure you install the correct drain plug. Also, one is for manual one is for automatic.

  • @likits1999
    @likits1999 Жыл бұрын

    Excellent video brother. You should be a college professor. I found a radiator leak on my sisters 2007 328i today and I just learned it's a SULEV because FCP EURO wants $640 for a genuine radiator. I did my research and found out why it had to be a genuine radiator, the sensor. Now that I've ran into your video, can I purchase a CSF radiator with the mounting holes like the one you got and reuse the sensor from the old one so I will be able to pass smog? Please advise. Thanks in advance.

  • @PistonPlay

    @PistonPlay

    Жыл бұрын

    100% but remember you need to get a replacement sensor. Also all the links are in the description and wiring diagram is there. you will pass smog

  • @likits1999

    @likits1999

    Жыл бұрын

    Very nice. Good looking out! You're a blessing to the SULEV community. Thank you for taking the time to reply once again and have a nice evening!

  • @nenuko03

    @nenuko03

    6 ай бұрын

    I did same thing

  • @mykeyloves
    @mykeyloves Жыл бұрын

    One question Roy. Is it really necessary to use the super glue on the sensor?

  • @PistonPlay

    @PistonPlay

    Жыл бұрын

    Well, yes, use the glue that I listed in the description because you don’t want it to fall out and that’s the recommended glue to use so the sensor is able to read through the glue we don’t want the glue to block signals. I didn’t even know that was a thing glue can block signals. So everything is in the description with the links for everything you need.

  • @colerobinson1187
    @colerobinson1187 Жыл бұрын

    What was the car you were driving in intro with exhaust?

  • @RoyBling

    @RoyBling

    Жыл бұрын

    2012 335i only muffler, delete

  • @ginatran4362
    @ginatran43622 ай бұрын

    If the sensor is bad. Can I just replace the sensor only or will I have to replace the radiator also? (Noticed a lot of the comments talked about glue)

  • @PistonPlay

    @PistonPlay

    2 ай бұрын

    There should be a second sensor hole there so you should be able to just buy a new sensor and put it in the second hole because once you remove the sensor it’s gonna break off so you should have one more hole there

  • @AffectionateStripedTiger-cq9pl
    @AffectionateStripedTiger-cq9pl3 ай бұрын

    My man roy I bought the radiator that you said to get now I can’t put my fan back in I don’t know if I’m doing something wrong, but the fan is very tight to get back in there

  • @PistonPlay

    @PistonPlay

    3 ай бұрын

    You should have any problem is it the same E90 ?!

  • @AffectionateStripedTiger-cq9pl

    @AffectionateStripedTiger-cq9pl

    3 ай бұрын

    Mine is a 2007 bmw 328 n51 engine

  • @dbanga5
    @dbanga55 ай бұрын

    I got same radiator but the sensor doesn’t fit

  • @zeno9248
    @zeno9248 Жыл бұрын

    can you use the volvo sensor for this?

  • @PistonPlay

    @PistonPlay

    Жыл бұрын

    if the parts number match sure just remember to rewire

  • @lost0824
    @lost0824 Жыл бұрын

    Correct me if I’m wrong don’t we have a 15 year warranty on this car? in California at least ?

  • @PistonPlay

    @PistonPlay

    Жыл бұрын

    Are 150,000 miles your correct it’s which ever come first

  • @lost0824

    @lost0824

    Жыл бұрын

    @@PistonPlay I’m just surprised you didn’t take it to BMW make them pay for once lol

  • @jaredfletcher1587
    @jaredfletcher158711 ай бұрын

    Can you get a radiator from a n51 car from a junkyard?

  • @PistonPlay

    @PistonPlay

    11 ай бұрын

    Sure, you can do only problem with that is I’m not sure if the lifespan of the radiator you could still get probably five years out of a used one

  • @aaronmcelhinney1436
    @aaronmcelhinney14362 ай бұрын

    You put the new sensor into radiator incorrectly. You pushed the far side clip into the radiator fins. It would probably still work, but each clip has a home on the radiator port.

  • @user-wc9cy1wv2f
    @user-wc9cy1wv2f Жыл бұрын

    版主 你好: 我是台灣人 我有一輛二手的~外匯.09年~.E90 328 N51的BMW ~因為水箱漏水 ~ 我更換了 台灣製造N52引擎的水箱 但此N52水箱 沒有N51原廠的那一個插座~~所以我將感應器放置旁邊~~ 裝上使用後 顯示~~故障碼:臭氧淨化催化劑溫度傳感器 線路高 是不是我買錯了 需要再更換N51引擎 專用的水箱 ~ 要不然儀表板 故障燈都亮著?

  • @PistonPlay

    @PistonPlay

    Жыл бұрын

    The tank you install does not have the sensor. That’s why you’re having a problem you need to replace the tank. If you check the link in my bio, you will see the original tank it’s you’ll also see the off the market so you know which one to buy based on price once you replace the tank and get the sensor you’re good you can’t reuse the oil sensor it has to be replaced also

  • @user-wc9cy1wv2f

    @user-wc9cy1wv2f

    Жыл бұрын

    ​@@PistonPlay 那請教版主好朋友~~ 是否能在感應器上 做一個絕緣體 讓儀錶板的 故障燈 不再亮起?

  • @AffectionateStripedTiger-cq9pl
    @AffectionateStripedTiger-cq9pl4 ай бұрын

    Hey buddy where did u get the sensor I try clicking on the link but nothing pops up

  • @RoyBling

    @RoyBling

    4 ай бұрын

    Let me check on that for you. I got it from Amazon.

  • @PistonPlay

    @PistonPlay

    4 ай бұрын

    fixed

  • @AffectionateStripedTiger-cq9pl

    @AffectionateStripedTiger-cq9pl

    4 ай бұрын

    Thank u the man🤜🏼🙏🏻

  • @akon5130
    @akon5130 Жыл бұрын

    is it the same sensor for N26 ?

  • @rahinskii

    @rahinskii

    7 ай бұрын

    Also interested of it, so is it same or not?

  • @isrealperez9069
    @isrealperez9069 Жыл бұрын

    My only question is where is it located where does a pen connect to You're not telling me that it's my first E90 I don't know if it needs I don't know how to tell if it needs one or not do I have to remove the radiator fan

  • @RoyBling

    @RoyBling

    Жыл бұрын

    Which engine do you have?

  • @isrealperez9069

    @isrealperez9069

    Жыл бұрын

    ​​@@RoyBling n51 so if I order this it will work correct you don't have any problems no check engine light turns out that I do need one I had a leak at Walmart and when I removed everything and try to carefully remove it of course it breaks off now I'm watching your video and I need to order this Will I be able to still drive the car with the check engine light with this sensor being not there until I order the part

  • @PistonPlay

    @PistonPlay

    Жыл бұрын

    @@isrealperez9069 this will solve your problem 100%

  • @isrealperez9069

    @isrealperez9069

    Жыл бұрын

    @@PistonPlay thank you very much can I still drive My car until my part arrives

  • @isrealperez9069

    @isrealperez9069

    Жыл бұрын

    I got it in the mail and I did the quick switch I guess I'm supposed to erase my check engine light cuz when I stuck it in it stayed on but when I remove the check engine light hopefully everything works out fine I also had to change out a battery had to register a die-hard battery 70 ah I had it off my E46 with a warranty so you said I shouldn't have no problem correct thank you

  • @soccershorts3744
    @soccershorts3744 Жыл бұрын

    this is for code p2570 and 2ada correct?

  • @PistonPlay

    @PistonPlay

    Жыл бұрын

    For 2ada I normally get that code when the coolant level is low p2570 means of sensor is going bad is your radiator leaking? Also, did you check if the sensor was disconnected? Check if the Sproat of the air sensor is broken off

  • @waltccc4

    @waltccc4

    Жыл бұрын

    @@PistonPlay I have the same code and the radiator is leaking on the 2007 n51 sulev. Got this Volvo Radiator Anti-Tamper Device - Genuine Volvo 31321504 from FCP Euro for $72.00 It's the same part as the Mercedes with a different connector.

  • @PistonPlay

    @PistonPlay

    Жыл бұрын

    @@waltccc4if the part numbers the same you’re good to go just remember you need to rewire

  • @soccershorts3744

    @soccershorts3744

    Жыл бұрын

    @@PistonPlay i checked the sensor on the radiator and it looked like it wasn’t properly put on my radiator is doing it’s job tho the car has some lag

  • @soccershorts3744

    @soccershorts3744

    Жыл бұрын

    @@PistonPlay it’s topped off and it doesn’t over heat

  • @soccershorts3744
    @soccershorts3744 Жыл бұрын

    just asking one more time before dropping 350$ on a new radiator and sensor

  • @PistonPlay

    @PistonPlay

    Жыл бұрын

    As you can see from the comments, the problems got solved from my video but make sure to do a diagnostic check even though you scanned and it tells you the error code to check if things are unplugged check if your radiator is leaking

  • @bknissimdoglife9484
    @bknissimdoglife948410 ай бұрын

    Can someone like my comment

  • @charlenebleeker1343
    @charlenebleeker1343 Жыл бұрын

    OH YOU DO KNOW HOW TO MAKE YOUR OWN VIDEOS! QUIT STEALING CONTENT AND POSTING IT AS YOUR OWN

  • @PistonPlay

    @PistonPlay

    Жыл бұрын

    You’re like one of the worst investigators all the rip your videos on KZread of mine I mean, if you listen to the videos, you will hear the same fucking voice retard 😂🤣 but since you don’t have anything to do keep watching the videos

  • @irvinggarcia5087
    @irvinggarcia50876 ай бұрын

    Your him for doing this video!!🫡🫡🫡

  • @scottalston8670
    @scottalston8670 Жыл бұрын

    I purchased same part - Mercedes Engine Coolant Temperature Sensor - Genuine Mercedes 221905560080 from Fcp $139.99 new part no core. Please advise if this works before I open it. Thx

  • @RoyBling

    @RoyBling

    Жыл бұрын

    100% sure it works

  • @RoyBling

    @RoyBling

    Жыл бұрын

    Just follow my video diagram how to re-wire

  • @MrLuist12
    @MrLuist12 Жыл бұрын

    Can the the eac sensor give u misfires also, ⟟ have tha code for the sensor and bank 2 all three coils misfiring will that be the cause.

  • @PistonPlay

    @PistonPlay

    Жыл бұрын

    Yes also, did you scan the car and get some codes?

  • @humanbeing4life

    @humanbeing4life

    6 ай бұрын

    I need your services. Are you in Miami Florida 😅

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