Jasssc

i am getting very bad mileage, 12 mpg on the last tank.
what the heck is going on?
check engine light came on and the code reader said egr
could a bad egr valve cause such bad mileage?

i have all tires properly inflated, no excess weight,

so whats up?

DRBC43AMG

Faulty MAF or gas leak somewhere? Or you forgot to take off your cast iron shoes

i_am_amused

i'm thinking it's the shoes, or his lead socks

in my S55 I average 16 mpg overall, 20+ hwy and 13 around town, but if I drive like a jackass I only get 9.

Jasssc

its not my lead shoes, trust me it gets worse when i put those on.
somethings faulty and i need to get to the bottom of it! haha

DRBC43AMG

Get the car on a Star diagnosis

Jasssc

gonna get it checked as soon as possible

edemac8

What wheels does you 36 have? It doesnt have the sl wheels does it...I almost bought that car last summer, if I remember correctly it was a 96

Jasssc

when i bought the car , it had amg wheels that were options on a variety of models
but i have monos on it now

really? the one in san jose?

austinholloman

Did you get this fixed? How many miles are on the car? Most of the time its an 02 sensor with higher miles (100,000+) these going bad will cause very bad gas mileage and check engine light for sure. However, your code states EGR failed right? If its the EGR valve you car should have some issue when stopped and in gear (Vibration or odd idle) This fault can be caused by a lot of short trip or mainly city driving. I know on the W210 there was a way to clean the part and it saved some people money. Do a search over there and see what comes up and find a trust worthy MB tech in your area that wont charge you $120 bucks just to say hello.

Jasssc

nope, haha
other stuff came up and never had time or money
it has 155,000 miles
i had a guy with a code reader tell me emissions or egr, i dont really remember
but i will get it check out this holiday season and let you know
hope its not a bad egr valve, $100+
how much is an o2 sensor?

austinholloman

I know there are 4 on the C43 but not sure about the C36, I would bet there are four. They are about $120 each. I hope you just need one.

OgdenC36

Lucky for us there are only 2 o2 sensors, one before the cat and one after.
Here they are at autopartsway:
http://www.autopartsway.com/PartList.../pagenum1/tabS

RANDY_P

get the code.

O2 sensor- change the upstream one and leave the other one alone till it throws a code- it's just there to test cat function, does not control mixture.

rjp

austinholloman

Much cheaper here and free shipping!
http://www.autohausaz.com/search/pro...xygen%20Sensor

austinholloman

Almost the same price as the EGR valve so either way, you shouldnt be out too much.
http://www.autohausaz.com/search/pro...68@EGR%20Valve

Jasssc

are these brands like pierman for egr valve and then there are brake pads by mintex
how are these brands? they say OEM on the website. is this alright?

austinholloman

All the parts listed as OEM are OEM. If not then it states alternate brand. I've used this site for years and can say they are the best on the web!

RANDY_P

Should be OK

I didn't like Mintex pads myself, not much cold torque- then again I tried them on my 911 and a BMW-

Benz could be different. Low dust tho.