code PO300

PO303, PO304 PO302 PO301 PO305

i replaced the Mass air flow sensor today. Wasted $100.

Went to autozone and the salesman said based on my multi cyl mis fires..he thought spark plugs or wires. Too hard for me to comprehend that in 20,000 miles my 12 new Bosch platinum 2 plugs all failed. And Mercedes over engineered wires ? 2 per cyl.

I accelerate really slow to keep it going. any extra gas and it mis-fires.
at stop lights when it idles rough i will restart and it idles smooth.
Go Figure. I am all ears. I just hate replacing new plugs with newer plugs. I now have a spare MAS.

__________________
Steve Danville
what i did myself.
CPS
rear shocks
MAS x 3.
SparkPlugs (twice)
Fuel pump & Filter
Window switch
replaced both failed horns with Honda horns.
Cleaned ERG Tube
Oil changes
Oil consumption Fix
Brake Pads
A/C Recharge
Anti-Freeze change X 2.
Front Shocks. Monroe. $90
Mercedes Warrenty Work:
Harmonic balancer,power steering clamp. Cat converters.Drive Shaft Bearing.s
Replaced Outer Lower Tie Rods and front lower ball joints at 156,000 miles