Today I removed the top of the intake manifold again and found a piece of plastic that was partially blocking the throttle linkage. Damn, that was simple. Now my car idles almost perfectly. But alas, my troubles have not yet passed as I am still having trouble with the ac. To be more specific, if I turn it on full blast in park, it will kill the engine. At a warmer temp setting and with a slower fan speed, the engine will die occasionally, but often times it catches itself just in time not to. Just as before, it will run fine if I turn it on during a drive. Is this a frozen ac compressor? Would it still blow out air with a bad compressor?