My 200 Subaru Outback is stalling, lurching and having a very rough idle when I come to a stop and when I start moving again. The check engine light has not gone on and there are no error codes when a computer check is done. It was intermittent (every 2 - 3 days) for a while, but now is a constant problem. No bad vacuum hoses, TPS was replaced about six weeks ago, throttle plate was cleaned. Any ideas? I can't use the car any more and I'm desperate to get it back to working order. Thanks.