From what I have read in the trade press, they do talk about cleaning this device, as I have said ealier deisels do get dirtier than petrol. From the mid1995 we went over to thin film sensors that have a much faster reaction time.cobalt said:Hi folks.
After reading the excelent HOW TO CLEAN MAF my car a S280 is running fine is it worth doimg my MAF or does the old adage "if its not broken........ apply
Thanks Cobalt
psmart said:Clean as a new born baby
Before... I havent cleaned it. The car went in for a Gasket replacing, which would have entailed disconnecting the combined MAF/Airfilter cover, but I could see no signs of cleaning. Still looks as new, the photos dont do it justice.Sprint'n'Go said:Is that before or after cleaning?
If that is before it's very reassuring as I was wondering how my 3yr old 105k van would be getting on.
Royville said:Hi there,
Where can I find my MAF? I have looked every where on my c180 elegance and I don't seem to have one fitted. Is this correct for my car (1996)
Regards Roy.
Yes that is the MAFanyweb said:take a look at the photo linked below:-
http://anyweb.homedns.org/car/car_interior/july_2006%20097.html
i presume the MAF is the device thats directly to the left of the engine (look left of where you put the OIL in), you can see an electrical cable coming out of the tubing that leads out of the AIR filter,
this is a photo of the engine on my C220 (1995 model) so I assume that that component is the MAF, and that your's is located in the same area
if i'm wrong then someone will chip in and point it out
cheers
anyweb
SnG, Id be a bit concerned on the oil, even though quite a few people seem to mention this. I had this argument out with good 'ol Malcom, and if you look at your air intake system, then theoretically, no oil can get from the breather onto the MAF because of that damn great vacuum cleaner called the Turbo turbine. Either your turbo is wearing fast and some unnatural eddies are setting up, allowing pressure from the turbine to go in the wrong direction, or the other possibility is that your shutting down your engine without spindown time for the turbo, which could theoretically allow the turbine to pressurise the inlet manifold (if the valves were in such a position that no overlap occurred) and when the turbine stops, the higher pressure in the inlet manifold pushes airflow and thus breather oil flow up towards the air filter.Sprint'n'Go said:upon opening the air intake piping was suprised by the amount of oil that dribbled out from within the pipes.
If youve got the time and patience, thoroughly cleaning your intercooler and all pipework from the turbo to the inlet manifold will help tremendously. Ok, I also replaced the turbo on mine at the same time, but the performance pre and post was very noticeable. Loads of oil comes from the breather through the turbo and some cakes and settles in the pipework and the intercooler, reducing its effective cooling properties, thus reducing charge efficiency.anyweb said:well i cleaned mine (merc c220 - 1995) and there was no oil pouring out by any means,
it didnt make any noticeable difference to my engine running either sadly
cheers
anyweb
psmart said:SnG, Id be a bit concerned on the oil, even though quite a few people seem to mention this. I had this argument out with good 'ol Malcom, and if you look at your air intake system, then theoretically, no oil can get from the breather onto the MAF because of that damn great vacuum cleaner called the Turbo turbine. Either your turbo is wearing fast and some unnatural eddies are setting up, allowing pressure from the turbine to go in the wrong direction, or the other possibility is that your shutting down your engine without spindown time for the turbo, which could theoretically allow the turbine to pressurise the inlet manifold (if the valves were in such a position that no overlap occurred) and when the turbine stops, the higher pressure in the inlet manifold pushes airflow and thus breather oil flow up towards the air filter.
I would say oil on the MAF thermistor or platinum wire wouldnt be good, as it would insulate them from the true air cooling heat conduction properties, thus your ECU seeing incorrect values.