During acceleration when it gets to 2200rpm it lurches and wont accelerate. The tach bounces between 2000-2400rpm until i press the gas enough to downshift where now at 3000rpm it accelerates cleanly. Once I hit 4th gear(65/70mph~2100/2400rpm)missing returns and continues unless i go faster or slower(above or below 2200rpm). It lurches like its out of gas but gets really bad when i use the lights or elec. defrost. I've checked the plugs,cap/rotor,wire routing. It really only started after i changed the oil and disconnected the battery to solve radio coding. 93oct gas lessens the problem slightly. The temp wont come up on the guage like the thermos stuck open. All this started after i changed the oil to full synth but has nothing to do with oil! Also my heater motor wont blow over 1st setting and wont blow HOT air. My radio wont respond to the code no matter what. No radio, no heat, and crap performance. Where's the luxury in this thing? Nothing has worked for long or at all with this sinse i got it.