So i just introduced myself a few nights ago and im already having a problem here. I think i may know what it is already. After you run the car a bit if you shut it off and then go to start it 10-15minutes later it does that start sputter and die crap. If you feed the beast a little gas and try a few more times it will get up run rough for a minute and then just smooth out and be fine...of course you can just shut it off and start it right back up. I had this problem happen to me once right after i bought the car brought it up to my mechanic they couldnt pull any codes and thought i was on crack . Anyway i looked it up and I see dan posted a few times about a Heat soak problem with the 98's and an update available for them. I think this maybe the problem. on the post he states something about the 2.7l thermostat and 2.7l heater hose modifications. What exactly are those and what exactly should i be telling my mechanic to get this fixed/diagnosed? Im guessing since its a computer thing if i kept that computer in during a swap my next engine would have this problem too? the only thing i noticed is that the temp gauge gets JUST above 1/2 and the rad. fans kick on...this is abnormal compared to how the car was when i went back to college a few months ago...it barely ever got above that quarter mark and i never remember hearing the fans being so loud....but just seeing what you guys think.