So using my (very basic) scanner, I keep getting these codes via OBDII
:
PO104 - B2/5 Hot film mass air flow sensor: Check wiring of signal line & voltage.
PO221 Fault of function monitor in electronic accelerator.
PO300 - Misfiring, Damages TWC
PO305 - Misfiring of cylinder # 5 (see currently valid STIP?)
PO306 - Misfiring of cyliner # 6 damages TWC (see currently valid STIP?)
and...
P0445 - Purge control valve (short circuit to UB or Ground / switchover valve currently open or closed).
So I presume I need a new MAS? clean or replace?
Also, I suppose this explains my accelerator hesitation sometimes w/ the electronic accelerator... what to do about this?
And I'm having a bad misfire that comes on after car is amply warmed up... sometimes it shuts down one cylinder, and sometimes 2 are shut down and then she's running REALLY rough. Will only be better after I let the car cool down and then restart. If I immediately restart - misfire coming RIGHT back.
I have replaced plugs & wires recently, used a couple of high quality fuel injection cleaners (Lucas, Techron), recently had a new fuel pump, filter & sending level unit. The only other things I can think of would be a bad fuel injector(s) or ignition coil?
And what is the Purge control valve? I'm going to look it up right now!
Car is a W211.065 with the M112.949 motor at 211,000 miles!
Please help! Thanks!