A NEW EXHAUST EXPOSES BIGGER ISSUES FOR THE BMW E46 M3

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My BMW E46 M3 which i found abandoned at the side of a racetrack has been well and truly miss treated for most of its life. Its suffered from nearly every common problem, from cracks in the boot, to broken rod bearings im working through each of them bit by bit. In this video im going to reassemble to rear subframe and then install a new @scorpionexhaustsyt but after fitting it all back together it revealed even more issues!
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[@MrAnderson321]

Gotta say Mat, apart from the bad news with the diff, this is becoming my favourite build, mainly because it’s being kept ‘near’ original and not messed about with.

[@marcuspaddock1108]

Have you tried coding the key? Replace the battery. Put it in the ignition, turn the key on and off so the dash lights come on 5 times, then take the key out, hold the unlock button and press the lock button at the same time and your key will then be coded to the car. Worth a try 🤷🏼‍♂️

[@vr6Hero]

Yeah was thinking the same, of the key has been knackered for a while then it won't activate the coded control unit. Try the key and will be easier and cheaper to test than new control unit.

[@fozpringle1]

Should still open locks when you physically turn the key in the lock

[@statementleaver8095]

Looks to me like the lock rods are missing the plastic ends. That button on the interior is linked to the inner door handle not the key handle.

[@ReignofStorms]

I had to do this with a blank key from Amazon as replacing the battery didn't work for me. Also the physical mechanism (where you put the key into the door) has a rebuild kit. Have done this twice since it is hot where I live and the spring just fails in them.

[@juangouveia8098]

was just about to write this....

[@Stctom1]

Loving the series, look forward to the new episodes every week 👌 such a genuine person and keep it fresh every week. Better than any TV you can watch.

[@Gameday2159]

For real. Just a guy living his dream on a website. So happy for Mat

[@VXRretro]

Personally I would take the diff out and strip it, might be the bearings for the diff rather than the helical gears. If it is the bearings and you change them and if there is too much backlash I would just swap the diff for a Wavetrac or Quaife LSD, the wavetrac is the better diff, has a cam inside it to help with loading on the free wheeling side of the diff. But before you do any of that take the drive shafts and prop shaft off and rock the diff back and forth to double check it is coming from the diff.

[@EmperorConnor]

Unlike a lot of car KZbinrs who dedicate whole episodes to just doing one thing on the car, it makes me so happy that you get loads done in a video. I don't know if other people feel the same but if a build series has loads and loads of videos on it I kinda get abit bored of it, great stuff matt Keep it up mate

[@MatArmstrongbmx]

I always prefer watching a more productive video. A lot of people ask for more videos which is easily done if I break it up into smaller episodes but I think bigger episodes makes better content

[@EmperorConnor]

@@MatArmstrongbmx I agree, bigger more produced videos work better in my opinion

[@steveb4012]

All credit to you Matt for your tenacity and resilience. Love this car.

[@francisrogers7664]

Keep up the great work brotha! You have such a great attitude and outlook on everything...esp when you discover/handed the bad news and problems with all your builds...its a breath of fresh air and motivating to all who watch!

[@colinward1007]

Loving these videos with this old M3. Great to see you bring this old beast back to life again mate. Keep up the good work!

[@knoxpriest8473]

Great effort Mat. Solution to your diff issue mentioned below. Dedication has been impressive, keep it up man.

[@olivers.6420]

That is one of your best projects if not the best. Everyone can wrap a car or put in an hydraulic suspension but this is real craftsmanship!! Well done so far Mat!!

[@kullyl]

Enjoying the updates! Diff is definitely past it's best. Time for a diff rebuild. I used Heasman Differentials 😁 cured all my remaining rear clunking issues/noise for sure!

[@jbond3200]

I have been following your videos since the BMW 1 serie and you're still making great videos. Thanks for sharing your passion.

[@benfrost7111]

Good work as always Matt, been watching all the videos as of late always a pleasure to watch and gives me the motivation to work on my own motor. Keep up the good work 👍🏻

[@stiflaah]

This is probably one of the best Cars you’ve ever got KZbin wise. This series is the best to me you’ve ever done. Greetings from Germany Mat ✌🏽

[@Daniel.Haywood]

Try doing some figure of 8’s in that car park to get the oil going round the diff, I had the same problem. If not I ended up getting an exchange diff with a slightly higher ratio to improve low down torque. Good luck, love the channel 👊🏻👍🏻

[@donkov5322]

I've been trying to find one like this myself, I love that styling of bmw. Keep up the great work Matt, can't wait to see this one done.

[@michaelrose7258]

Absolutely loving this project Mat. This should be a TV show I love it, I look forward to the videos and hate it when they end

[@anthonybrand6137]

Another great amount of work done on the latest episode of the E46 M3! 👍This build is proving to be very interesting as it covers a range of issues that us home mechanics might face when working on older cars. Bad news about the diff, but not that surprising considering the car has been tracked. Perhaps you should check all the drive train components for wear/ worn components. Keep up the great work!😊

[@ericmcmanus5179]

Always check to make sure the job is finished and everything works properly before putting everything back together. It saves a lot of time and hassle doing those checks before buttoning everything back up.

[@1881Gordon]

Jeez Mat. This E46 M3 Project has morphed into a Full-on restoration Build. Even your voice sounds hoarse... Fantastic job! 👌

[@credilbecars9713]

Your doing a fantastic job on it matt. Cant wait to see it finished its going to look awesome this one has got to be a keeper

[@alanhyper2855]

Matt, your work ethic is very impressive, nothing seems to phase you, you just get busy and crack on with it. Kudos to you man

[@gaz--b]

I'm lovin your channel, totally positive vibes, even when things go wrong, like you say, you enjoy what you do. I repaired a couple of cars (RS México) yeah, long time ago, one step forward three back fun.

[@Bin_Truck_Fan87]

Loving the series! Who would love to see an hour long video or 40 mins etc? That would be dope! Please try doing a longer video Mat and love the content as always

[@timothyclapham936]

its refreshing to know I'm not the only one who has bad luck with cars!! 13.45 I genuinely felt your pain Matt!! Then the diff as well - oh man!! But your strength of character is amazing. As always your positivity will get you through just like with the Lamborghini in Spain!! Loving this build this is by far the BEST car you have done!

[@mortenvinding]

Love this build . Don’t even worry about the diff. Get a new one . This car deserves it

[@adropo20]

Loving this project!! Keep the good work! That blue beauty deserves it. E46 M3 is an automotive legend.

[@tommyknightly1659]

Love the M3, great video and some work put into it by you, de have sky rocketed in value.

[@KopCole]

What I love about Mat and this excellent channel is that Mat doesn’t know what he’s doing but he does know what he’s doing at the same time..and that’s exactly how I am. I watch a lot KZbin videos on a certain job that I need to do on my car, then that gives me the confidence to tackle the job myself. Sod paying some garage hundreds of £’s to do it. I think Mat has given so many of us the inclination to ‘have a go’ ourselves.

[@dom7215]

Stay strong the M Starts to Look so good and you did a good Job again ! It's an older car and it was used hard . Give him Love and you will have a Long Time fun and joy with it.

[@WeSwedish]

Love the content bro! Love the way you showcase that you can buy any car and fix it if you have the time, knowledge and money. The car is looking hella fire 🔥, love to someday do the same with and old BMW. Greetings from Sweden 🇸🇪!

[@CanterRsps]

Loving the videos Matt. Just got made redundant and I have two young kids and it’s going to be a struggle this Christmas but your videos make everything a bit better

[@Scottyschannelmtb]

Love it bud I’ve got one I’ve had mine for 16 years and my diff has not done the clonking but on full lock you can feel the lsd from when I first got it and that was with only 30k on the clock so that’s no worries 👊🏻👌🏻❤️

[@Jim-iy6ue]

Loving the progress Matt, keep smashing it pal 👌🏼💯

[@darrenm7964]

Hi Matt you should also check the fuses in glovebox if I remember correctly there should be 3 fuses for the central locking/alarm, there should be a white plastic diagram sheet to help find the fuses, the 5amp fuse is the most common one to blow hope this helps

[@steeg8051]

Iv had the same issue in the past with the central locking on e46s there's a sequence you have to do with the key in the ignition to resink it to the module. There's plenty of tutorials on KZbin 👍🏻

[@AlexSanchez-re3jn]

I hop on KZbin everyday after work looking forward to watch your videos. It’s like a reward.

[@arbal691]

This car with this color its my wet dream... Im so jealous of it not gonna lie. This car will definetely give back in joyrides when you finish it. Keep it up with this amazing job. Cheers mate, I love what you are doing.

[@z7olliez7518]

Mate, the work you put into these videos is incredible!

[@blackjackzw]

Your technique painting the calipers is how it should be - nice and quick 👍

[@Holdeenio]

I’m loving this project! Mat you said it came with a spare key, did you try the buttons one too? Often the spare is better than the main one when worn out! Please stick a Wavetrac LSD on there 🙏🏼👀

[@darrenm7964]

Hi Matt check your gm5 module behind the glovebox if yours is a later module it wil say (star12) on the module,and these very rarely go wrong they can be swapped like for like same part numbers if is playing up,also check your fzv anttena which is behind the panel on n/s c pillar it's the grey box plenty on eBay doesn't need to be the same part numbers, hope this helps.All the best!

[@ianmulley2013]

Loving the content on the E46 probably saved it from being broken for parts. And your right that is the joy of working on older cars lol

[@themc2806]

Class again matt! Go down the CSL route mate get the front bumper and boot/spoiler 👌🏼 keep it up look forward to more of this content

[@andrewkidger7048]

Great Car Mat, yeah try resyncing the key, shame about the diff, are you sure it's not a rear wheel bearing issue ?, Looking forward to the next vid, well done

[@davej6335]

Great video! Consider getting the diff rebuilt. Looking forward to the next video.

[@waynerussell5265]

Well done Mat, alot completed this week. Definitely think door is coding. Car will be fantastic when finished. Scorpion exhaust top draw. Keep up the great work, peace out 😉😘🥂🥂🥂🥳🥳🥳

[@joseffujan3760]

love this series, brought me to you… keep it up

[@davidwindress9579]

Fantastic build. Its all part of the journey with older cars but worth it in the end. 👍

[@itztherealaaronworld_3]

you have magic hands i am 1000% sure you will be able to fix the gorgeous Laguna Sec Blue E46 M3 in no time bro!!!!!! we have faith in you mat.

[@Herbs420xx]

Best build ever loving this series 💯

[@patrikmarcinek]

This is the most exciting project so far! Can’t wait for the new vid.

[@SpottedUK]

Not to worry! We stand behind you! Bring on the content! 👍💪

[@ter3360]

Have a bit of a soft spot for a laguna 46, good find and well worth a save! Csl bootlid and front bumper would look the nuts! Sounding a bit under the weather Matt?

[@jujujonbitcoinisplanbcrypt9618]

Im loving this project, all the problems you have and how you solve them is so interesting! Do you weld the cracks and then add the strengthen plates and there welded on? Really interesting never seen it before 😎 great job well done! 👍love this project 😍 please don't rush it..... loving every second 👌

[@sash328]

You have to add FM booster to diff oil. I had a noise problem when cornering and the oil change with aditive helped.

[@Smokey8080]

Great series Matt! Had the same issue with locking system, turned out to be the barrel! Bought a rebuild key off ebay (about 5 pounds) and it fixed it! Good luck with the rest

[@chrissmiffo72]

Second this comment less than a tenner off ebay and a fairly easy job solved the problem on my e46

[@repairupdaterepeat5815]

It's amazing. I've got a rover 75 and it's amazing how many parts and design ideas I recognize on the E46 and r75

[@yhshah21]

Top job, Sounds exactly how it should.

[@gearstick_g]

Mat I love your videos! I'd love to see the M3 back on the road

[@petricatofan1158]

Keep up the good work matt love all your video can wait this project to be done 🥇🥇😃💪💪🤙🤙👏

[@ash_mk1_escort]

Looking good mate, my e46 key doesn’t work on the remote either.. you can try and reset the frequency in the key few vids on here for it. I’d check the bearings in that Diff!

[@AliShah-ux6mu]

Loving the content as always Mat your truly gifted. 👍

[@stuartbarratt85]

Loving the content mat 👌 , wouldn't worry too much about the rear diff , just had my 1 series refurbished for less than £300 , drives like a new one 😀

[@twistedl2009]

Keep at it, loving this one more than the newer cars!

[@Hcarmad]

Great progress, great car, great guy! Keep up the good work bud, this car will be and absolute beaut when it’s done 😎

[@richmarsh85]

Good work Matt, you need to get in touch with Everything m3s in Banbury. Great bunch of guys. Also do dif rebuilds

[@stuartwatkinson9720]

Your commitment to your videos are outstanding

[@em8969]

Love it Matt! You got this!!

[@faniskalamata2264]

good work man ...Keep the good work!

[@mathewash1620]

Loving this build 🙌

[@DailyDrivenDude]

Just love the E46 M3. That engine sounds healthy , and it's spitting water out the tailpipes like a boss , around the 17min mark ...

[@e46rush]

hey mat, good job doing this car right, you should look into the GM5 module, they often go wrong and can be sent out and rebuilt for only $100 US. That should fix your issue with the locking!

[@jamesparsons8348]

Keep up the good work matt, 1 small step at a time pal..you'll get there...

[@davetreanor5303]

Superb content, as the 2002 M3 I owned was the best car I’ve ever had this series is fascinating

[@khamamwandira4209]

The m3 is fighting back, actually making these vids even more interesting. It will be worth it in the end.

[@frasersmith2810]

mine did the same on the diff after 5 years off the road. You need to put the friction modifier in the diff and it completely fixes it after 500 miles.

[@adamlong628]

Loving this build, reminds me of the days of the Audi TT. Current i own a BMW F30 Series and had a E92 also but would love to own a E36. Please but this up for raffle! I would buy the lot!!

[@jackmillin]

One of my favourite projects of yours this 👍

[@michalmachata6648]

Mat Armstrong I had similar issue with my BMW E46 320D, I could not open with keys after pressing button, it only worked rarely. It turned out to be some electrical relay issue, guy who was doing it said it looked like relay got stuck between switching circuits and stayed in one position. But it does not have to work for you, just my experience.

[@bulldog333]

Amazing. You make it look easy mate

[@markmemory6363]

Hi Mat had the same problem, footwell control module as you are aware what it controls my’n was just the n.s.f light. Looked all over for one but there are three different ones. Cut a long story short had to go to BMW. £650 and it had to be programmed. On the up side they did valet it for me free. 🤣😂

[@JLexMcT]

Definitely becoming my favourite series so far 👌

[@dees3866]

Try going to the rear of the car and point the key at the rear window, I had the same problem with my key and central locking. There’s a video on KZbin that shows you that you have to press the button a few times or something for it to work. Mines started working instantly

[@luvit7567]

Absolute favourite series upto now Matt, just wish the vid was 2hrs long 👍

[@darrellbrixey5341]

Awesome video Mat, thank you

[@templarsurfa1585]

Can’t wait till you finish this one Matt I love this car 🔥🔥

[@Sdw77]

You are bonkers boss and I love it! Just discovered your channel, all subbed up, and going through your back Catalogue. You have got some skills and buck knows where you get the money from, your Mrs must be an Angel😂 I love cars but would never normally do anything even slightly complex but you have certainly given me the confidence to give a good goo, c’moooonnnnn😂you sound like a midlands boy too? Keep up the crazy content, brilliant 👌🏽

[@simonturner5067]

Another Crackin’ video Mat ! Keep ‘em coming !

[@mikolv21]

Chrisfix done a video on rebuilding diffs, it's pretty easy as fixing cars go, give it a go Mat

[@DerTyp1804]

you've got to get the csl air intake, that carbon fibre one makes the car sound so good!

[@paul230373]

Loving this build great looking car keep up the great work Matt 🎉🎉❤️💪🏼✌🏻👍🏻🤟🏻

[@aaronsbestlife]

The productivity is crazy! Smashing it Matt

[@itztherealaaronworld_3]

you know what time is it!!!!! sheeeeesh anotehr banger video from the man the myth and legend Mat Armstrong let's get it!!!!

[@d.c.Jones70]

Think your being a bit hard on yourself, you are definitely making progress and this will be one of the best you’ve done

[@trzarector]

Ya sounding a bit rough dude take care of yourself! That shape BM is just gorgeous. Still looks so good!

[@tommjj]

Love the E46 content - one day I'll have one!

[@GridTalkUK]

I don't know why, but for some reason this is becoming my favourite build! Hanging out for the next update.

[@silent00assassin]

Great video, yet again, trials of fixing old cars hey, keep it up Mat..👍

[@ConnorSimpson007]

I've been jumping between wanting a scorpion exhaust and a Megan racing exhaust on my car, but hearing the scorpion it's a proper bit of kit. You might have just persuaded me. Also The noise from the differential noise is common. If you've just changed the oil you need to do a figure of 8 on full lock to allow the oil to get in the clutch plates inside the differential. Also being the car has stood still for a while could also have something to do with it aswell. Clutch plates could have dried out. If that doesn't sort the problem then I'm afraid a diff rebuild is probably the best best. Could do a 4.10 drive ratio swap while in there. Hope this helps matt!! Loving the e46 videos

[@danbourne11]

Was gonna suggest this too. Glad someone has pointed it out. Might *might* get away with it!

[@sash328]

Castrol SAF-XJ 75w140 With FM Booster will help you with noisy diff