Sounds about right - my car is almost to 104,000. It runs fine, but the CHECK ENGINE light has been on a lot, yesterday it flashed at me - never saw THAT before!
Read codes - none there. Odd - why was the light flashing and then on for about 20 seconds?

Anyway, last week it threw P0300/304/305/306, and in the past month I've seen P0401 - the famous air pump code, and a few P013x/P015x codes.

So, before I spend $$ at a garage, I'm ordering 12 plugs, 12 plug wires, and two O2 sensors. I will also yank the RCM out and resolder the hell out of it and look for bad relays.

Only after that will I even consider paying someone to look at it.