2008 Smart Fortwo 451 84 BHP Lambda Probe and Exhaust Part 2 - Refitting
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- เผยแพร่เมื่อ 6 ต.ค. 2024
- In this video I fit a new NTK the number 2 lambda probe/oxygen sensor following a fault code of P0141 - O2 sensor heater circuit bank 1 sensor 2. Additionally I reassemble the exhaust system with genuine Smart parts, fitting a new elbow, bolts, springs and sealing washers.
This resolved the exhaust leak between the elbow and turbo that had been evident during the warm up phase.
Finally, to reduce engine movement, I remove the split and worn front engine mount. Prior to fitting the genuine Smart replacement mount, I fit Powerflex red inserts to tighten the arrangement. What a difference this made, with no more driveline shunt, lurching and movement when accelerating, decelerating and at gear changes.
For Part 1 - the removal , see • 2008 Smart Fortwo 451 ...
For my rear panel removal video, see • 2008 Smart Fortwo 451 ...
If you enjoy my videos and would like to help support Auto Knight in creating similar content, please click here: www.buymeacoff...
Disclaimer - Please be advised that my videos are not instructional and are merely footage of me, with many years of motor trade experience, carrying out vehicle repairs. Please conduct your own research, ensure you have the correct tools/necessary expertise and undertake your own due diligence before carrying out vehicle repairs. If in doubt, entrust an automotive technician.
Another pair of sensational videos there. Most engaging, the engine mounting info was most enlightening.
Amazing how those elbow to silencer and elbow to turbo gaskets had deteriorated to virtually nothing, largely due to the dynamic loading, itself the result of that engine mounting failure. Well done all round.
Cheers
10/10 from me.
Thank you, your comment is complimentary and motivational - I really appreciate it! I wonder how many people refit the old elbow, unaware that the inbuilt sealing ring has been worn away to nothing.
You’re welcome, you do make great videos.
I expect that a great many folks don’t realise the extent of the wear on these joints... and just refit them....
I’ll be checking my 451 very soon to be sure I’m all in order in this regard. I’ve only had mine a week or so, it’s off the road for winter as it’s a true gem of a car. Keep up the high quality work, I’m sure a lot of folks appreciate it, but won’t always take the time to say so..
cheers
Al
Excellent as always. I'm going onto Big Performance website straight away.
Thank you.
A really good, informative and interesting video 👍
Thank you! I aim to make them as interesting and useful as possible to others wishing to tackle similar jobs, if they are able to.
Great video but would be great if you included links to the parts you use!
Thanks thanks and thanks again !
wish my 450 had that type of centre engine mount , the one on mine had to have just the rubber insert changed as it was all built into the rear subframe , changing it meant having to drop the rear subframe to access for renewal, even the rubber bush was hard to source , if I ever buy another Smart I will make sure it has the modified mount .
The 450 is indeed much more difficult to do. Have had that on my previous 450 smarts. Horrible job!
I'm blaming that engine mount on me needing a new £350 exhaust just to replace the broken flexi pipe section (71bhp MHD) that got moved around too much.
I tried various places to get a repair section fitted but they didnt wish to (I purchased a nice quality 451 specific repair section thinking it would be fine), I kept my old exhaust in case its repairable in the future.
I have the powerflex inserts on a new mount to help stop this happening again. The whole car feels more solid. But I would say the vibrations and noise increase are significant. Though definately worth it.
Its also worth noting that powerflex dont supply the grease and dont reccomend using it now for the inserts, I enquired about this as my box didnt have any grease but the online instructions say to use grease, they have confirmed you are not meant to now and apparantly have updated their instructions for fitting.
That’s interesting to know about the grease and I’m curious why. You do get used to the vibration. I’ve certainly noticed it more now I have functioning air con, when it is switched on. I guess it’s a trade off.
@@autoknight747 I'm not sure why the change, I did notice that from the box as they come the inserts are quite greasy to touch, coated with something maybe, certainly not dry feeling.
The powerflex bushes for the rest of the car are quite expensive so I'm not sure about getting them, I might just get new standard versions of everything else if required. Though I was tempted by the front anti-roll bar bushes as they might get some stress.
Both the upstream and downstream Oxygen sensors can be cleaned in B12 carburator cleaner. BUT do not use any type of wire brush. Soak the very tip and clean with a toothbrush.
This wIll usually get you another 30K miles if you are dirt poor . . . like me.
Excellent video, very clear - keep them coming! I’ve recently bought the same car as yours (2008 84bhp) for my daughter to learn to drive in and going through the finding out what’s wrong with it phase so your content is well timed for me. Generally seems ok apart from a loud honking noise for about 10 to 15 seconds after starting the engine after which it runs ok. Any tips or thoughts welcomed!
Thank you! Ah yes, that phase when we usually discover the real reason people sold the car! I kind of enjoy ironing out all the problems, as you can see from my channel. 84bhp is the one to have. Could you maybe upload a video of it during the initial start up? I’d be interested to hear the sound.
@@autoknight747 Yes, there’s a degree of sleuthing out the issues that is ok - so long as there’s nothing major. I’d be delighted to share a video, I tried it this morning but typically it only made the noise for about a second for the first time ever, normally longer. I’ll tag you when I have a decent example thanks.
Hey, thanks for sharing these videos. It really helps a lot, and you are doing it in a super clean way and easy to understand and follow. would you mind sharing the purchasing links for the parts? or the website.... Thanks.
Thank you - I like to keep things organised! Most of the parts came from my MB/Smart dealer and some dealers in the UK sell on eBay which can enable a bit of a saving. The Lambda probe was from eBay but I’m very selective to ensure that the brand is reputable (ideally Germanic when possible) and that the seller is genuine. I don’t fit unbranded Chinese parts.
Hello great video, can i ask where you ordered the exhaust parts from? Thanks
Most from Mercedes/Smart dealer but the Lambda probe/Oxygen sensor I located on eBay.
Hello and thank you for the valuable information you share. I am among those who, despite all its defects, appreciate the 451 84 Hp and spare no expense to fix it properly, in short exactly like you. I take this opportunity to ask you for advice on how to resolve a vibration that is really driving me crazy: it occurs when starting off and disappears when driving, really annoying. I swear that if you help me solve it, I'll send you a bottle of Sardinian wine.
Hello! Where does the vibration appear to be coming from? Engine? Transmission? Rotational? What influences it? Where do you feel it - through body, steering wheel, brake pedal etc?
@@autoknight747 I can hear the noise on the rear left side of the engine, but only for a few seconds during acceleration, then it goes away
@@autoknight747 I also noticed that the muffler is noisier than normal, I wouldn't want it to be something inside the muffler that vibrates
@@danielsun7214 What year is it please? The exhaust system changed over the years and the later 451s have a flexi joint section that can fail.
@@autoknight747 The car was registered in 2008
Hi, thanks for a very informative video, I have an 84bhp and suspected I have the same issue the the exhaust elbow joint. Would you have the part numbers for the joint, seals, springs and bolts please.
Thank you! The following is from the invoice. Obviously this is specific to my vehicle so cannot be sure they’d fit yours.
Elbow SA4514900119
Bolt SA0019906600 Quantity 4
Spring SA0089933201 Quantity 4
Seal SA0004921681 Quantity 2
@@autoknight747 Thanks a million, really appreciate the reply and the videos your are posting. I will check against my own chassis number before ordering. Cheers.
Great video ! I am having the exact same problems on my Smart 451 2009. Subscirbed and liked.
Where do you get your parts from ? I heard going direct to mercedes for parts might be cheaper but i'm unsure.
Thank you! I usually use my nearest Smart/MB dealer for most things. Some UK dealers also sell through eBay which can save a couple of quid too. Have to shop around for some bits though which are too dear through the dealer. Always try to get OEM or quality German brands though.
Hello mate.... Thanks for sharing those inserts for the engine mount... How are they doing now... Engine vibration not too crazy?... Still in place?.... Thanks in advance...
Still doing well. They can’t really escape as they are sandwiched in there but I did have a look under there recently and all intact. I’m good with the slightly increased vibration, knowing that the engine is more ‘retained’ and my exhaust joints are not being stressed.
@@autoknight747 cheers mate. I incline with the Hardrace engine mount strong recommendation from Christos X-motors Greece ...This one shouldn't increase vibration at iddle...
top job mate,is there a link to where you got the parts
Thank you! I gave the part numbers in response to a another question just the other day. Scroll down a little and you can see. Here is the link to the lambda probe that I bought. Naturally you’ll need to make sure that these will fit your car as it may be different from mine!
www.ebay.co.uk/itm/181503439130?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=gt2bXHAaQNG&sssrc=2349624&ssuid=b9o5VfnnRQi&var=&widget_ver=artemis&media=COPY
@@autoknight747 lovely thank you very much.mine is exactly the same .pretty fast these 1litre turbos unlike the other models that have the same acceleration as a red london bus
I'm interested in that the exhaust on your 09 Smart Turbo 84bhpis a completely different set up to the exhaust on my 2014 Smart Turbo 84bhp. Both inlet & outlet are both on the same end on mine and there's a flexi joint joining the exhaust to the rest of the system. The flexi started to part company with the exhaust .... £450 from MB ... £130 for a pattern
You have the later arrangement with a flexi. The earlier system, as on mine, has no flexi pipe and the catalytic converter is built into the silencer. The later system (to meet different emission regulations) has a separate cat and then a silencer with flexi section, the braiding of which can fail, along with inner structure.
Just a further thing, if possible, it’s best to find a good second hand genuine component than fit anything aftermarket!
@@autoknight747 The aftermarket exhaust isn't too bad - so far. I did find a suitable flexi & kept the original .... One day 🙄 I'll take it to work & weld it in!
@@EmilysDadd I think there are definite advantages to having a separate cat!
@@autoknight747 Definitely a financial advantage ... 😉
Donde compro esas piezas rojas por que yo tengo un Smart 2008 y lo que Uste ase es muy bueno
Great video ! Really enjoyed this 1
Thank you! It’s great to get it all back together so I can drive this one again.