...Just got my car on the road, drove it around for about a week then all of a sudden it wouldn't idle when I shift into drive anymore (or reverse). When it's in park it idles fine, then when I put it in gear the rpm drop so much it dies. The engine is a 350 with a th400 trans. Its pulling 12" of vacuum at idle in park. Anyone know what could be causing this? Is my torque converter messed up and not letting the engine idle in gear?