MAF cleaning/maintanance before install - Benzworld.org

burbur · 04-09-2008, 06:30 PM

Hi Everybody
I will try to replace MAF tomorrow hopefully I will get the part. I got some interesting info that MAF clean itself by allowing high current right before start up. Could anybody confirm? It is used MAF I cant afford new one now any info will be greatly appreciate esspecially tips during un/installation. Is there any way to check MAF before installation?
Thanks in advance wish me good luck
Burbur

bigwiki · 04-09-2008, 07:59 PM

I used to have a BMW and I used MAF cleaner to clean the MAF. I clean my 300e MAF with the same cleaner. It's available at Kragen for $9 a bottle. I heard everytime the car starts, the thin wire in MAF will go red hot for a couple second to clean any dusts out.

chrisdpham · 04-09-2008, 09:13 PM

I did this task over the weekend and it's defintiely easy to do on the E420. I got the "MAF" Cleaning spray at my local parts store for around $7. I also cleaned my friends MAF on his W208 CLK430 and he told me he feels a difference as well.

If helped a lot and I noticed the difference between the dirty, contaminated MAF vs. a clean MAF but it turns out the MAF sensor alone - the unit is going bad so I'm replacing it with a new this Friday.