Did you clean your guidetube or replace with superceded part? If not, take it for a long ride...at least an hour or two. See if that does anything for you.
How long have you had the car...and do you monitor your oil/coolant level well? If not, do so, just in case.
Upcoming comedy shows: March 3 at Broadway Comedy Club, NYC, 8 p.m. March 5, Tierney's Tavern, Montclair, NJ, 7:30 p.m. See Facebook for other shows and PM me if you can make one...love to see you there!
Mangofy your E46!