Well, we swapped out his T-stat yesterday...turns out the kid put a 160* in there the first time (supposedly under the impression it was a 180*...), so there's half his problem... However, we put both the t stats in boiling water, and they both opened exactly when they're supposed to; 160 and 180, so the 160 didn't seem defective...
However, it still took his car upwards of 25 minutes to warm up @ idle to reach the 2nd thin line of the stock gauge and settle into a quasi-decent idle. I think his tune is WAY off. The problem is/was is that the shop could never actually set initial timing, as the "pointer" that came with the new (ATI?) damper does not actaully have "point", but rather a round-shaped protrusion - has anyone ever seen this? I'll try to get him to post a pic if he can.
So they don't even know what his initial timing is, Iwhich I would think could explain some of his warm-up problems.
However, after we let it warm up for 30 min., we took it for a drive and it went right to the half-way point on the gauge and stayed there with no problems, hich it wouldn't do before. So, the 180* helped somewhat, and he said it was driving alot smoother. Now we just have to figure out why it takes so long to generate heat and find a liveable idle and temp...
Any ideas?