e30t387

so my check engine light came on the other day and car is not right , when im in neutral and try to rev up the car it sputers and when i take of it sputers, but its on at high rpms, what do u think it could be guys please help if its something i could do ill do it cuz its way to expensive to take it anywhere to get fixed.

ohlord

it in neutral?Most benz have not only a speed limiter but also a park rev limiter that kicks in at about 4000rpm.
Where are you located?
Get the codes read for free at autozone or shucks
or buy the 94169 obd2 scanner from
http://www.harborfreight.com/cpi/ctaf/retail_stores.taf
they will meet the internet price if you have a store near you.
Post the codes,it usually is an easy fix.
ohlord

Z06EATER

Sensor went out man...i member when i cleaned mine and put it back on the hose i didn't plug it in so then i took it for a drive, and it was doing the same as urs lol...tryin cleanin urs or replacing it, i kno this are expensive but wat can ya do..

good luck!

e30t387

no i know what the rev limiter does im talkin about when ur driving taking off it sputers but at higher rpms is fine

e30t387

what sensor? the maf?

Z06EATER

sire the MAF sensor not sure where's it's located on the 43's but on any care it should be between the air box and throttle body somewhere, take it out and spray it good with CRC MAF sensor cleaner, and let it sit for a half hour to dry, u may get a weird smell after you start the car after cleaning it, this is normal..

ohlord

need to read the codes,before cleaning or replacing anything.
Z06 is talking about your mass air sensor.And while not expensive at $168 no need to clean or replace it,until you have the codes read.
post them when you get them.
ohlord

Z06EATER

ohlord has a point get the codes read first just to make sure....

e30t387

yea i just ordered the obd2 scanner its was only 60 bucks, where do i post the codes anywhere i can find out what they are?

MarcusF

You can post the codes here, or look them up at this web page

e30t387

thanks for the help guys, will post them when i get the reader in.

StapleGun

P0130 and P0133 - are indicators of a bad MAF. Your described symptoms sounds like a bad MAF - extremely simple DIY. IM me if you wish, I'll give you phone # so I can walk you through, if need be.

svt ricco

any updates here?

ohlord

codes usually ar p0170 and p0173.
p013* codes are usually indicative of o2 sensors.
Post the codes if you still need help.
ohlord

SeeKlasse

actually MAF codes return values for fuel trim on banks 1 and 2. bad MAF can cause 02 to give bad readings so if you get an 02 sens code check and see if its sens 1 or 2 and on bank 1 or 2. then clear the code and see if the exact same o2 sens is reporting, then you must replace the o2 sens. as for the fuel trim, if you have one o2 sens reporting and youre strill getting fuel trim on both banks then it means its the MAF...

something like P0170 and 0171 i think...

ohlord

fuel trim codes if both are present at the same time maf out of range or faulty.
Clean it with crc brand maf cleaner or replace it and the ecu will adapt.
One o2 sensor will not report to or affect both banks thus not affect both fuel trim codes and only cause a fuel trim code on one bank,therefore not the maf.
He needs to get the codes or code or we're all pissing in the dark
So where is the op amd if he is concerned with the problem please post the codes
ohlord

MBHustla858

why spend the 130 some dollars when you can buy just the insert from your local audi dealer for 68 bux or something........

part #

06a906461a

SeeKlasse

whos talking about audis?

oh by the way i dont know why you made yourself wait for a code reader, you should have driven to walmart (dont tell me there isnt one near you) and buy one for 90 bucks. sure its more than what you paid but who cares its there when you need it right? it reads obd2 and can...

happy coding

StapleGun

Ohlord - you're correct, my relying on my memory. P0170 and P0173, something akin to 'fuel trim left, right trim' was what I remember reading...

e30t387

yea your right but i didnt even know they sold those there so now im stuck waiting, still waiting for it i know its the maf because it happened before but i just wanna be sure and plus the reader is something good to have anyway.

Z06EATER

well keep us updated, i rememebr once i forgot to plug mine back in and i drove the car and man, it drive like SHI* lol So i def, feel ya bro

e30t387

ok got the obd2 reader the only code that came up was p0100, witch is maf i believe so im gonna try to clean it today.

ohlord

p010* are maf range high or low values
P0100 is most likely a circuit malfunction,meaning the thermistor that gets cooled by the passing volume of air is shot.
Try cleaning it per the diy on benzworld w210 diy section,but I think it is just time for a new one.
www.autohausaz.com
also make sure the harness is plugged in fully to rule out a bad connection.
When you get a p0170 and p0173 fuel trim code that is a sign to try and clean with the crc brand maf cleaner,when you get a clear p010* code it is usually time for a new maf.
Toss in a new air filter from autohausaz while you have it apart.
ohlord

Dr. C36

do three things....

1) clean MAS w/ crc mass air sensor cleaner
2) after you do that clean with 91% isopropyl alcohol to clean an excess residue
3) check your rubber air intake couplers (both before and after mass air sensor). Mine were cracked on the bottom side thereby giving false readings. Check my "Silicone intake coupler" thread in my signature for more info, this is very common. I thought it would be expensive fix, ended up costing me $15 total, haven't had the problem since.

Z06EATER

took the words outta my mouth you got it if you clean that sucker good you should be fine...but if yyou get a check engine light again, i would buy a new one