Date registered: Mar 2006
Vehicle: 1997 W210 E320, 1999 W163 ML430, 2002 W203 C240
Location: Los Angeles Killa Cali
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Air Mass Meter works when you clean it
I was at my mechanic the other day and had some repairs done under warranty. Turns out they installed the fuel pump / filter wrong and i had a noise that sounded like a jet engine coming out the rear drivers side fender. Well I had that fixed for FREE since they had just replaced it a few days ago.
Then the mechanic came and told me that when he took the ML around the block he noticed I had no horse power (BALLS). He told me I needed new plugs, plug wires, coil pack, and a new Air Mass Meter (Funny thing is that I had no engine lights or horse powers issues before i brought my ML in). I told him I had just had the plugs changed a few miles ago, that is when he quoted me $1500 for the new wires, coil pack, and Air Mass meter replacement (WOW THATS HIGH).
I left the shop with a Check engine light on, no horse power, and a very vivid image of that mechanic hanging upside down from a cherry picker (USED TO LIFT OUT ENGINES). When I got home I went to our sponsor Autohaus and bought all the parts for under $250 And I also learned you can just replace the Meter unit on the Air Mass sensor for about $100 so I bought one just for future sake.
Turns out the Air mass meter was dirty and all it needed was a spray of a $3 cleaner to get it back up and running. I also noticed wrench markings on the Air mass meter as if someone had taken my unit off and replaced it with a dirty one (HMMM). I did the plug wire changes in a snap, changed the bad coil pack, cleaned the Air Mass Meter, and now my ML runs like a Beast (I LOVE IT). That will be the last time I go to that mechanic for service (I THOUGHT WE WERE FRIENDS).
So the lesson is revise your ML before you go to a mechanic and make sure you know what your parts look like and what condition they are in before they swap your part for a bad one and Rape your wallet.
I went out and bought a paint marker and have marked my parts so that I know if they were my parts to begin with or some else's bad parts they had saved.
Trust me it will save you time and money.
Life is the thing that gets in the way of plans.