Hello. I'm new to the board. I'm sure the answer to my question is on a thread somewhere. Anyway, I have a 2000 Foresster L with about 130k on it. Love it (paid for), starting to get that wonderful "Check Engine Light" that will come on the first few minutes I travel. Doesn't happen every time, but it does seem to happen after a small studder in the engine. I suspect something like the coil pack (I guess that's what they are called) or maybe a plug wire. What's the easiest (cheapest) way to diagnose this? I really don't want to go to the dealer and get hosed. I keep reading things on here about codes. How do I find those.
Thanks in advance for direction.