I have 2001 MDX w/162,500 miles. I'm original owner. I see these same issues in other threads here. Had issues on/off for the past 2 years - Check Engine and Vtm-4 lights come on and 4WD doesn't work, car idles & runs a bit rough, and just in the past week something new - it stalled out 2x after the engine went from being under load to dropping to idle. Issues seem more likely to crop up when it's very cold outside. I've been putting Sea Foam in the gas since the problem started every 3-4 months and it helps the problem go away - for a while. My mechanic pulled the following codes P0700,P0303,P0304,P1740 (auto trans fault, cyl 3 misfire, cyl 4 misfire, problem with 4th gear clutch pressure switch circuit) but they are not Acura specialists and don't have clear idea what to do. I've seen advice on this forum including valve adjustment, replace EGR valve, replace VTM temp. sensor. SEEMS LIKE VALVE ADJUST IS THE MOST OFTEN RECOMMENDED COURSE OF ACTION. Wonder if you guys who are tech savy could point me in the right direction. Thanks.