Hi! I have been taking the car into Bill Gray - a huge dealership in Pittsburgh. The guys are nice - but, I always get the impression they are way too busy to put alot of thought into unusual problems. I am pretty particular about filling up the gas tank - usually when it hits a quarter tank - I fill'er up. I am aware of the gas cap connection, but, is there a correlation between the tank being full (or not)? The cap is still pretty tight, so I am guessing that is not the problem. Plus, the guys at the shop check it every time & it has never shown up in the diagnostics.
Thanks for the coaching about the spark plugs - I definitely will have that conversation about changing them. Also, got some additional advice about requesting an updated ECM - plan to look into that too. Again, appreciate the help - I'll let you know how it goes.