Today it was about 100 degrees here in Des Moines, and my poor maxima sat outside in direct sun for the whole day. When I started it today, the engine just didnt seem to want to go...I had to put my foot on the gas to get it to start up, but then everything was fine...I'm bone stock as of right now and 76K on the odo. I haven't had time to do any diagnostics, but Im fairly sure the slow starts had to do with heat...anyone having this happen on hot days???