C180 Coupe '02' plate (yellow engine light)

[RaySloane]

Help please...?
I was going down the motorway, at about 65 and the yellow engine management light came on. Thew manual says its either, exhaust, ignition or injection system.
I have noticed that the engine is not as smooth and fuel economy is down from an average of 40-42 to approx 35-37, also engine is slightly chuggy, but not much...any ideas..?

Many thanks in advance

 

[television]

Hello and welcome, your car, is it a 202 or 203 180

 

[RaySloane]

Please excuse my lack of knowledge on the vehicle, only had it 5weeks and not had the log book back yet.

From memory it is a 1996 (or thereabouts) cc, even though it is a c180

sorry i havent more info

 

[television]

Please excuse my lack of knowledge on the vehicle, only had it 5weeks and not had the log book back yet.

From memory it is a 1996 (or thereabouts) cc, even though it is a c180

sorry i havent more info

That will be a 202 see what I can find on Sat

 

[RaySloane]

thought it was a bit strange that it was a c180, but is a 2L car..!

Not yet used to all the little electrical quirks..! and warning lights.

Only thing i can think of so far is the air mass meter..?

Many thanks for you help

 

[television]

Yes the air mass sensor is the first port of call that is if it has one.

we do need to know if it is a 202018, or 202078 there is a chassis number at the bottom of the windscreen or chassis plate under the bonnet, no rush till tommorow

 

[bry220cdi]

Ray said it was an 02 plate C180 which would make his car a W203 NOT a W202 ?? Yes !
Bry.

 

[Ron Palfrey]

Please excuse my lack of knowledge on the vehicle, only had it 5weeks and not had the log book back yet.

From memory it is a 1996 (or thereabouts) cc, even though it is a c180

sorry i havent more info

NOT IF HE SAYS IT IS A 1996 CAR...

 

[television]

NOT IF HE SAYS IT IS A 1996 CAR...

No point in thinking until the VIN comes up

 

[mercman_1]

He didn`t say it was a 1996 car said it was a 1996 cc
Bob.T.

 

[Ron Palfrey]

Whoops, sorry Bob (and Bry). I stand corrected.
Ron

 

[television]

I missed that as well, what a life, any way it should be the MAF sensor. get one from Bosch, much cheaper than MB

 

[RaySloane]

Many thenks to you all for your help, sorry for ignorance but what does MAF stand for...?

Regards

 

[television]

Many thenks to you all for your help, sorry for ignorance but what does MAF stand for...?

Regards

Air Mass filter, it is a sensor that monitors the air flow into the engine and adjust the fuel to suit, when dirty or out of spec the MAF normally puts the engine in what we call a limp home mode.

It is the cure for 95% of this type of fault

 

[RaySloane]

many thanks

 

[coolpot]

i have a 2002 W203 Coupe
it might be worth mentioning my recent going ons.

I had rough running poor idle etc. If your idle is rough open the bonnet, and see if your engine is "vibrating/shaking" mine was, and it was diagnosed as a faulty MAF, there was nothing wrong with it and at a cost of £370 fitted! my problem turned out to be a £2.70 breather pipe had a tear in it, the tear was enough to cause the MAF to show up as faulty, the problem with alot of mechanics is they see a sensor is giving invalid data and just swap it, instead of thinking, well what could be causing that?!
Also, at certain point when idle i could quite clearly here the car sounded like it was sucking air in when i lifted the bonnet, which was a give away.