h22 in 94 dc2...maintainence req'ed lights flash when started is the 1st problem... the motor will bog down after a while of normal driving conditions...it will drop way low in RPMs almost stalling, then will bounce back up. Sometimes at red lights the car will stutter for a min then totally stall. Will also do it randomly throughout normal driving conditions. Sometimes car will run fine, then all of a sudden the car will cough and the CEL will pop on (once again going up and down in RPMs) When v-tec is engaged the a/f guage drops way lean even when the fuel is bumped up on the vafc. i have replaced the o2 sensor and it has not helped. also does this when hitting larger bumps, or tighter turns. If ne1 coud help it would be greatly appreciated.