Fixed My MB W204 Power issue, It was a Blocked Catalytic Converter!
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- เผยแพร่เมื่อ 13 ก.พ. 2020
- Hi all following the Killarny Robot racing, seeing how the car just didnt perform right after some diagnosing from my brains and interballs I was sure one of my cats must have been blocked up the car had all the symptoms. Here you see me(Powerflow) fixing that issue!
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hey you said this is the m104? it sounded a bit supercharged maybe just a background sound lol.my slk230 has been dead for quite some time. no power so this clogged cat causes this huh. you had no codes right? the car felt like it was in limp mode?
Nope its a W204 with the M271 engine the supercharged version. Correct it showed no codes and it just felt like it was down on power after removing this one and some time later now i realize the First cat is also on its way out. they must have been damaged with the engine timing chain issues. so soon i will be removing the first cat too. It doesnt feel like limp mode totally the car will still drive and get up to normal speeds but when hammering it it just feels more and more sluggish as i found out going to the drag strip.
might be having the same problem. did you have any misfire codes come up or a check engine light?
Nope no codes just felt like a lack of power it was the heat coming from under the car after a drive that gave it away to me.
@@YusufPetersenCPT how frequent was the heat? my car has the same lack of power and sometimes a little heat comes from under. i feel like i have the same issue.
Yes just after a drive of like 20mins you will feel the heat coming from under the car is just not normal at all car is still warm under now after but it was way way warmer before these cars can do with side or bonnet vents
How's your car now? I've been having the similar problem since I bought the car, now it just got worse with the engine light permanently on. Not a single spare parts dealer around GP has stock.
Cars still running fine its constantly featured on my channel. To think it has no cats at all now. Its straight pipe till the resonator.
I have a W204 C200 CDi and battle to get beyond 160km/hr with my engine management light on, do you think removing the cat will sort this out?
If the management light is on its in sort of a limp mode, i get 160 so fast its scary.. so have the codes read see what it says coz if its a blocked cat it will come up in the codes. But i think you have a DPF they too tend to get blocked and can rob you of power like crazy.
@@YusufPetersenCPT hi did you have the cat deleted?
@@rew3363 yes totally removed both.
I have the strong smell of burnt exhaust I'm my E350 W212. Nothing inside the car and no smoke. I'm wondering of it's a slight Cat problem, fuel richness or port or normal? It's not crazy bad but, I've had in for the last 6 months.
Burn or warm with a blocked cat you could get really warm under the car so that burn could just be things getting really hot underneath the car unless its coming out the exhaust then its most likely the inside of the cat just burning away with oil and stuff thats built up inside. It could be something small or major try and find out where it could be coming from maybe something smoking when the car is hot to start off with.
@@YusufPetersenCPT It's not crazy hot or any smoke or anything inside the car. It's just like a diesel or a slight burnt exhaust smell for about 5 minutes after shutoff. I'm guessing a small cat issue and not thd port fuel filter/sprayer or something under the back seats. I've had the smell for the last 6 months. Perfect oil and fluid changes, everything cleaned out and fuel is from different stations at 93 octane. Hmm. I'm going with the Cat is slightly blocked. (No hesitation, accelerating loss or sputtering) The heat thing I haven't checked. Not a fan of 2000 degrees that a blocked cat could potentially get to. How would one check a blocked cat on their own? Service it is, I'm guessing. Thank you for the reply.
@@UhhhhhnooOOo00oO theres a way to check for a blocked cat, you have to remove the first O2 sensor before the cats after the engine. they insert a pressure gauge and when the car is running the pressure builds up over a certain amount, thats the one way i know of. other way would be to remove and shine some light through it. my car too drives fine until i step on it then i can feel theres some power loss so my first cat has got to go will be doing that one soon.
@@YusufPetersenCPT I know it well from Scotty many years ago. 😉 Well there is 73K miles on it. I'm guessing it's slightly clogged. I'm not going about removal and cleaning. I'll pay the crazy amount it will be at my Next B Service at the end of the year. It just had a B Service last December and they probably didn't do anything about it at a well known Mercedes Service center. You'd think they would have noted that. Would it have passed their inspection/emissions they marked as passed? (NY being very stringent) They also didn't reset the service counter. I had to go into the system and do it myself. I'll do nothing until about November of this year, unless the car falls apart. It is almost in brand new condition and treated like a baby otherwise. Thanks again
@@YusufPetersenCPT Added: I have a fancy scan tool: It isn't showing a check engine light but, do you think a blocked cat would show up, if I scanned the vehicle?
Im having an issue with my 2008 W204 , not sure if its the cat , car hard changes from 1 to 2 and then sometimes on the freeway the engine wont go pass 80 or 100 , it gets sluggy .. petrol is very high as well. And when on freeway can get petrol burning smell
Oh wow thats crazy i would have it checked out yes there is a pressure test you can do to see if its the cats i wouldnt be shocked if its your cats mine felt very sluggish but it didnt limit itself in speed just took longer to build speed. The petrol smell also sounds a bit off. But assuming all else is well its probably the cats
@YusufPetersenCPT what symptoms were u experiencing
@cellmo1907 super sluggish felt like no boost reving it up took a bit long and car got really hot underneath thats about it.
@cellmo1907 your car sounds like its in some sort of limp mode maybe have someone run diagnostics on the fuel system if your engine light isnt on coupd be vacuum/boost leaks or the gearbox needs some resetting there is a way to reset the gearbox its on youtube.
Can I do this too on my 2013 C350 V6 petrol engine?
Oh yes for sure my bro inlaw did this to his W203 C230 Coupe same engine as the C350 and it sounds amazing kinda like a 350Z.
Do you hear the sound at a 4000 rpm?
Because i have the same problem in my w204
Yeah you hear it through the whole rev range it will also rev up slugishly.
How much you paid for this?
It could technically be free, they charge around R1000 to cut out and replace with a stainless piece of pipe. But most places will buy the cat from you for more than that so find out by the place how much they will pay you for it. If they don't want to, get the job done keep the cat and sell it to a buyer.
Tell me how is the smell after you remove it it's dioxide carbon foams which making cancer, and your mechanic sold the old one for 1 k
He most likely did and gave me nothing for it the bastard till today im cross at powerflow as i didnt know back then. Smells just like a normal car from back in the day to me so nothing im not used to cold starts are smelly tho but as it gets warm its not bad just smells like a warm engine running.
Did you have to delete the cat out of the software?
Nope i just put a fooler in and the software doesnt car no engine light.
@@YusufPetersenCPT i want to remove the Cat but don't want any codes coming up, what exactly is a fooler that you used? got any pics or links? Thanks man
@@OzarkLivin hi there yes I used a fooler and I got no codes at all been driving like that since. The car will burn a bit more rich to be safe but once it's warm it's normal. It looks just like a hollow extention for where the O2 sensor sits, it goes in the thread first and then the o2 sensor goes into that so it just pulls the sensor out of the direct flow and just a little away thats how it fools the ecu... @B is For Build made something similar on their LS boat engines same concept. Hope this helps.
@@YusufPetersenCPT so did you actually cut the cats out physically or just remove/trick O2 sensor? sorry for all the questions was just thinking if you removed the cats there would be know where to put the hollow extentions thanks!
@@OzarkLivin so the location of the sensors are in the same place but I cut out the cats completely and put in str8 pipe sections so the only stuff left is the resonator that sits before the diff and the silence at the back with the tail pipe on thats stock. From the engine till the resonator is str8 pipe
Hi are you in australia, where is the garage shop located ?, i think i ve got the same problem
I'm in South Africa... but I'm sure there has to be an exhaust place close to you that can do that job for you it's not too crazy it's just cut off and replace with a stainless steel bend.
So, you didnt replace it with original mercedes catalyc converter? Just after market stainless steel ?
@@satyorabbani2983 yeah I didnt replace it I totally removed the cat and put in a str8 pipe to replace it. Theres no sensors after this cat so to the car it's like nothing's changed you will pick up a bit of power and it sounds a bit more meaty you can go str8 pipe all the way to the back from here if you wanted to..🤗 the first cat right after the exhaust manifold that one needs to be replaced if faulty.
@@YusufPetersenCPT, where in South Africa brother? I really do need to do this on my Merc.
@@YusufPetersenCPT I'm kn SA. Johannesburg. Do you know anyone who can replace my converter because mercedes benz will charge me an arm and a leg my power is low and petrol consumption is high due. Please help. I have a 2008 w204