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PART 1: HOW TO CLEAN MERCEDES C250 THROTTLE BODY & REPLACE MAP/BOOST SENSOR
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- Опубликовано: 20 сен 2018
- In this video, I show you how to replace your boost pressure sensor and MAP sensor along with how to remove your throttle body on your 2012-2015 Mercedes-Benz C250 1.8L 4 cylinder turbo engine (M271 EVO).
In the next video, I will show you how to replace the other map sensor and air sensor that’s hidden near the intake manifold.
Yes, the c250 has 4 total sensors that affects your air/fuel ratio.
DISCLAIMER: This video and description contains affiliate links, which means that if you click on one of the product links and make a purchase, I’ll receive a small commission. This helps support the channel and allows us to continue to make videos like this. Thank you for the support!
MAP Sensor for my 2012 C250 Coupe (M271 EVO engine)
Mercedes Number: A0081530228
BOSCH Number: 0261230250
EBAY: ebay.us/klnfZc
AMAZON: amzn.to/3DjV5Bh
BOOST Pressure Sensor for my 2012 C250 Coupe (M271 EVO engine)
Mercedes Number: A0051535028
BOSCH Number: 0261230189
EBAY: ebay.us/jTGLJg
AMAZON: amzn.to/3B74cEv
Throttle cleaner
EBAY: ebay.us/wtiOb2
AMAZON: amzn.to/3meZw9y
RUclips Music
The Brothers Record - "Palmtrees"
DISCLAIMER: This video is NOT endorsed by, directly affiliated with, maintained, authorized, or sponsored by Mercedes-Benz. All of the videos on this channel are for entertainment viewing purposes only. Due to factors beyond the control of FlexxAlexander, I cannot guarantee against improper use or unauthorized modifications of this information. FlexxAlexander assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. FlexxAlexander recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of FlexxAlexander, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not FlexxAlexander.
How to remove MAP sensor Mercedes Benz C250
How to remove Boost Sensor Mercedes Benz C250
How to remove Throttle Body Mercedes Benz C250
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Just replaced all four sensors and the throttle body. Your video made it super easy and saved me a fortune! Thank you!!!
This video was actually a huge help for a bigger project. I had to replace the high pressure fuel pump on my 2013 C250, and only one video existed for the job, and it was garbage. So i was left with looking over diagrams and piecing together videos, this being one of them. So I saw your other videos and I may rely on them for a lot of things. The C250 is very easy to work on, even easier than my Honda (as long as you have the tools.).
Once the throttle body is removed, it’s pretty easy removing the intake manifold (there are 9 bolts, not 8). One thing I will ad if you ever have to do that job (high pressure fuel pump), you may have to turn the engine to match the cams to the high pressure fuel pump.
Yeah...i had to do the same research when taking off my intake manifold to clean it. It's a pretty straight forward engine once you know where things are at. I never had to replace my fuel pump but glad you were able to do it!
Pull the oil filter out and cover filter housing . Pull the air filter and housing off, Put the engine at 53 a t d c ( after top dead center) on the front crank balancer, pump will slide right out without removing intake manifold. It's a tight fit leave the lower union nut loose for the fuel line till you get all the bolts started and the pump lines up. Make sure the old keyway comes out also before installing new pump that comes with new one.
@@davidwolf6776 hi David I got a question I have a c 250 2012 I refill the tank with gas the engine immediately start missing one started back right at the pump then run for few minutes and shut done I can never get it to start back I need help plz let me know what I can check
Thank you very much. I had trouble to start the car and the engine light was on as well. After cleaning the throttle body, it goes well.
Thanks Flexx this is exactly the video I was searching for . Appreciate that you have a clean engine !
I'm gonna be replacing my high pressure fuel pump next week (once I get it delivered) so this will help me at the same time when making the swap.
How did that go ? Did you do it yourself ?
Thanks brother. I appreciate your expertise help.
Took me quite awhile but I finally got it off. I’m replacing sensor just in case. Thanks Flex.
Hi Flex, my 2014 C250 is stalling when it idles and when I come to stops and stop lights. I was going to replace the Boost & MAP sensors and clean the throttle body also. does this sound like a good solution?
You sir... I thank your mother for you
Hello thank you so much for your help on this, I have a problem with my c250 same 2013, same engine model, I notice this cold start every time I turn the engine off for a long time, it will just kick and kick but refuse to start, but when I remove the throttle connector it will start immediately, I have replaced the engine but its same problem
ruclips.net/video/rwtAdVvZqdk/видео.htmlsi=uJvaHUQUshSygNRz
Flexo: my 2012 c250 under acceleration makes a noise similar to exhaust manifold leaks..., but is not exhaust manifold leak and the noise comes from the left side of the engine bay..., Do you have any advice to find that "chu chu chu" noise. ?? Thanks
Hey Flexx,
I love your channel! I have a question about the power loss. I’m not getting any codes and my car feels like the turbo is nonexistent! I clean the throttle body to see if that would help but it didn’t. Would you suggest replace the map and airflow sensors? Thanks
You might also want to check for any boost leaks. I had a couple on my OEM Diverter Valve (rubber on the plunger was torn, so it kept releasing boost), and one on my air intake tube (Small tube that cracked). Check out his diverter valve/blow off valve and Silicone/Aluminum Air Intake tube videos if these are what's wrong with yours! Otherwise, check along the air intake/turbo routing.
My exact problem. Can you remember how you solved youre
I have a GLA250, I think its the same engine but it looks differently set under the bonet. Will keep looking for a video specific to that one. One question, tho. I have 4 years with my car, still at 55k KMs, Should I wory about this soon? Every oil change has been on time if not prematurely. Extra gently with my car.
Excuse me, I have a 2012 Benz C300 Recedes which is giving me codes that are P0174 and P0171, and the fault that I see is that when I drive the revolutions they fluctuate between 2 to 2.5k, which do you think could be bad? I hope you can help me, thank you
First off, awesome videos! Very informative.
I'm a recent owner of a 2012 C250 1.8l (non-diesel) Benz and I scanned it and got a P0100 code. (Mass or Volume Air Flow Circuit Malfunction) So my question is, does my vehicle have a Mass Airflow Sensor!? Or is the code referring to something else? I can't seem to locate a Mass Airflow Sensor. Any input is appreciated.
There’s no “MAF”. There’s the sensor in this video and go watch my other video for the other 2 sensors. All 3 are related to air.
@@TheFlexxGarage I really appreciate the response! Going to watch a majority of your videos. Thanks again and keep the videos coming! 🤘🏼
Thank you!
Yes sir,can plz help me out of my problem, I had a 2009model c200 kompresor, and the troble code is p0045,its say supercharger boost control solenoid circuit A / open, where can fine the boost solenoid,tnx
Mercedes e2501.8 petrol turbo coolant leaked from backside near air cleaner box need help
Thanks sir for video could tell me that can i clean map sensor over replace it please answer sir thanks
You can use Electric Parts Cleaner on the sensor. Spray it on, blow off any excess, and let it air dry.
@@TheFlexxGarage sir as a last question i clean air flow sensor because it has some parts that get dirty by carbon like red thing but second map sensor doesn't have such part to get dirty so you mean i should just clean electric part of it thanks a lot my car is benz c250.
HI Bro, may i know how many torque you need to screw the nuts back in to the throttle body mount?
Flex
Tried to drain coolant in 250c. Turned counter clockwise 1/4 turn but nothing came out. Totally stumped.
Flexx!!!!! i miss the W204 days with you but i know things change & we must move on. however i have question for you if you help with. what tools did you use to remove the throttle body? i changed the sensor & my check engine light is off but its running really strange & think its the throttle body.
Hi Flexx! I'm getting a code 505 with no check engine light. Sounds like an idle issue. You mentioned my slk have the same engine as your car. Do you know where the Idle Air Control Valve is located? Thank you!
Would cleaning the sensors with maf cleaner be better ?
Also the air intake doesn't pull back that easy and lift up. Must be more to getting it off?
Hey man I’ve been feeling a rough idle on my car , which one of these things is more likely to be the best for that if I’m not able to do all?
Take care
I have a question this sensors are the same for the c250 sport sedan 2120
Hey flex I need help I recently bought and and installed a high pressure fuel pump immediately went out went full throttle and it failed again need help!!!!
That sucks but you need a mechanic who can diagnose your issue. I can’t really do anything for you cause I’ve never had to swap out my pump.
I have so many questions
Like do you since you unplugged the battery do you need to reprogram anything and what kinda T bit did you use to take out the throttle body ?
Literally I’ve disconnected many of my cars and never dealt with reprogramming anything. Never even had to reprogram my radio presents or clock.
@@TheFlexxGarage Interesting. I needed to “reprogram” even when I changed one oX sensor.
Flex I have 2013 C250 with Code P0234. I removed the throttle body and cleaned. And the same code is still there. I have replace the boost sensor ( part Number 005 153 50 28) the car seems to run worse now. Can you point me in the right direction on what to do next?
Don’t really know. But these are the possible issues listed when I did a simple google search.
Boost pressure sensor harness is open or shorted
Boost pressure sensor circuit poor electrical connection
Faulty boost pressure sensor
Faulty Turbo/Super Charger
Engine over temperature
Ignition misfire exceeds the calibrated threshold
Faulty Knock sensor (KS)
Flexx where do you found that air system diagram?
is replacing the sensors necessary??
Cel goes off for a while then returns. Cycle is continuous. Car running fine except for a rumble at low speed.
I love your videos but think maybe the sensor names in this one are not correct. What you are calling the booster sensor is actually the ambient air sensor. It is located before the turbo so it cannot be measuring turbo boost pressure since the sensor is "upstream." When I unplug it I get a computer error letting me know it is indeed the ambient sensor. What you show as the MAP sensor on the air intake is actually the booster sensor (again, I tested this with the computer to make sure). Unfortunate I learned all of this the hard way chasing an issue where my boost sensor was bad, and using this video I replaced the ambient air senor 3 times before I figured it out. Your video explaining how the turbo system works helped me understand what was wrong. Thanks to you may car is back better then ever now! I appreciate you.
Yes and no. If you watch my latest video, I was with a Mercedes Benz tech and while we were shooting the video…that specific topic came up on sensors and their names and he told me there’s no consistent term used in these sensors. Some dealerships will call it this, some that, and the aftermarket resellers will also call it something else. Some will even have a few different part numbers and work the same way. A lot of them are interchangeable.
@@TheFlexxGarage Hi Flexx, love your channel - keep it up. I'm having that P0068 error code and I want to replace all the sensors while I have the throttle body out cleaning it. Do you happen to have part numbers for these (MAP, Boost, secondary sensors, etc...) because there are so many different names online, I don't know what is what. Like Shawn mentioned and you confirmed, some call it this, some call it that - nothing consistent. Please help!
If you do all that but the p0068 code is still there what can it be? It is at the dealer now and they are saying when testing the pressure no leaks but it shows when the DV+ releasing pressure is throwing the code because the MAP sensor is showing too much pressure is released. They cleared the codes and are suggesting if it comes up again to put oem back and see if that was the issue.
The only thing I have installed is the dv+ / turbo muffler delete / metal air intake/ intercooler blue pipes from tornado tuning.
They are stating since vehicle is tuned for oem DV that aftermarket pressure could be throwing code and I do not want to tune the car to avoid issues like this in the future. I really like the basic upgrades I have done.
Please advise
I had a p0068 and it went away on its own. And my cars been fine and Still with all my mods on the car.
And I know other people with the p0068 with a stock engine.
I wish I knew the fix but nobody has a true fix.
Some people found a lose air hose. Some people reinstalled their JB tune and that fixed the issue. And like me, it just went away on its own.
Oh yeah, tons of people are running the DV+ with zero issues. And a lot are even running the new version that dumps all the air pressure cause it’s a blow off valve. Again, no issues that I’ve experienced or heard about.
@@TheFlexxGarage AWESOME! I had the aftermarket parts installed for about 4 months and no code but ever since the new fuel pump was replaced it is now there. There is no performance loss with the p0068 code so I will just let it ride and see if it disappears how yours did. Thank you for that!
If not the dealer wants me to install original oem DV and if code comes up then they will investigate further. If the light never disappears then I will try to swap it for the original dv as instructed by dealer. If the light is on after oem dv installed, then its still under warranty so the dealer will tell me what they can find from there. Ill keep you posted if it goes that far in case others have the issue!
I have high hopes it'll disappear though! You have been awesome thus far. Thank you for all the mod videos! I would have never attempted any of this with you! lol
Definitely keep us posted. The P0068 was a tricky one. I was like past due on my annual car inspection in late 2018 because of that damn code. I was freaking out everywhere I drove because I had an expired inspection sticker and I couldn't figure out the culprit. And I even uninstalled ALL my performance mods too and changed my spark plugs and stock airbox and airfilter, etc.... It didn't fix anything so I slapped everything back on...a few days later...it went away and I passed inspection with no check engine light and it never came back. Really really weird. And like you said...the car drove normal with the code. Just really weird.
Flexx Alexander disapeared! Throttle was disgusting! You are the man!
are both the same sensor? can you give us de part number?
Can I get those torque screws from MB parts department? Can't find them online. Mine are missing in action.
Mercedes should have them.
Thanks Flex
Yo flex i need your help I got 2 codes on my car! p2300 & p061A-98 and I can’t find anything related to them to help me fix it
P2300 it’s your pcm most likely. Check your coils or any connections related to that. P061A-98 internal control module torque performance.
thank a lot.
Hi flexx. my car is 2009 mercedez benz c class. My problem is that my car won't accelerate, it's not engaging in gears, it's like it's In limp mode. The check engine light came on and it's me 3281 fault code saying the boost pressure control flap is malfunctioning. Kindly help me out
Hey Flexx, My wife's W204 just died at 102k miles while getting out of the garage. Very shaky and wont start. Reader said it was a P029921, P030300, P030400, P030200 and P030000. I replaced the turbo valve and that plastic end turbo hose since i discovered it was brittle and leaking. I also replaced 4 spark plugs and cleared the codes. Now, car wont start. It ran once, died and now it just cranks but doesnt start. Any thoughts? I dont see any codes on the reader. Probably since i already cleared it and needs to run a little bit. any thoughts? I just ordered 4 ignition coils too.
Sounds fuel related. Either the car ran outta fuel, fuel filter is clogged, or the Fuel pump is probably dead if it cranks and doesn’t start. I bet the lack of fuel or little amount of fuel going through the engine was what was causing the shakes and misfires. If the fuel filter has never been a changed…that might be the easiest check/fix before throwing money at the car and guessing. As always, please get a reputable professional to diagnose it.
@@TheFlexxGarage thanks Flexx I will try to replace the filter. I can hear the pump from the back seat when I turn the car on.
@@TheFlexxGarage so start with the fuel filter and (maybe) the fuel pump? I've had the car since 52k miles and I'm not sure either was replaced.
What kind of “reader” are you using? When changing important components like you did, you need the Mercedes specific software diagnostics (Xentry…etc.) to actuate and enable the replaced components. Its simple, but you need the darn thing.
@@bohrora2293 I cant clear the p0299 code on my 2015 c300 with my autel scanner. Is this only able to be done with xentry?
you should also consider cleaning or replacing the crankase breather that is responsible for engine oil deposits inside the intake manifold, onto valves, sensors etc
FYI, just because it’s not in the video doesn’t mean I didn’t do it. Haha
Are the map sensors identical?
Some are. And they are called something different depends who you ask or where you buy them. Best to stick with the actual part number on that specific sensor that you’re replacing
I got the p0068 code
Map / Maf throttle position correlation
Did u find the problem/fix?
no @@supeme3153
I'm getting the same code on my 2012 c250. If you find the solution, please give me a feedback. Thanks
Any one know how I can fix P0086 code on my C250 W204
Are the map and boost pressure sensors the same thing ?
so what ended up being the problem you were chasing? purge valve?
I forgot but funny thing was it went away all by itself...so random. And never came back.
Will this clear p0068 error code?
It could but not 100% sure. I had that code and did a lot but it eventually went away by itself. I wish I knew how but I don’t know how it went away.
how many mile should clean thottle body?
There’s no set time. I just do mine every 30-50k miles. Doesn’t hurt to do it as long as you know what you’re doing.
Replaced map sensor, cleaned throttle body. Car now displays poor excelleration. Replaced map return to original 1. Running well but cel still aluminated.
If you have a CEL, then you should pull the fault code to know what's really the problem.
I had a P0068 fault that nobody can figure out so that's the only reason why I did my swaps and cleanings. Car ran fine and the code eventually disappeared on it's own. Very common problem in the C250 for some strange reason.
It was p0068
CEL still but car running fine.
I hear a rumble at very low speed. Not there previously. Any knowledge on this Flexx (sorry for the missing x in my earlier comment)?
Am I the only c250 owner that’s getting a raddle / rumbling sound when slowing down?
NVM I found them
You know what, I loved your videos, but this small crap like you have two screws on top, but you have to go in blind on the bottom you could’ve added. I’m not trying to put you down, but you could’ve also added how to takeoff that plug on the throttlebody instead of people, ripping it off, the best videos are the 100% honest videos even if they take an hour and a half. Quit editing.
Thanks for the kind words but you are expecting something that’s not suppose to be there.
My videos are not detailed maintenance guides. They are just videos on how I work on my car and a rough guide.
Any capable backyard mechanic can watch, get inspired, and do the work without needing to know screw sizes, torque specs, what tools to use, or how to remove a clip.
If you’re not comfortable or don’t have the knowledge or skill to take a clip off or remove this or whatever, don’t do it. Have a mechanic do it. Don’t rely on a RUclipsr to show you everything.
I’m not here for that level of detail. At the end of the day, I’m just entertaining and inspiring people. I’m not a certified mechanic telling you this is exactly how you should do it. Whatever you end up doing to your car is on you.
It’s common sense bro I ain’t no mechanic or nun and I did this in 30 minutes
So where is actually the Mass Air Flow sensor in this engine? I have the exact same engine as your. 🙏🙏 I just bought MAF Sensor Cleaner 🥲🥲
There’s no MAF in a c250.
@@TheFlexxGarageHey bro, I got a code p0172 a little help please