car runs like crap only at night.. -__- help!! [Archive] - Toyota MR2 Message Board

sensor, notice, temp, night, guys, tested, plugs, wires, coil, coolant, hell, replaced, lights, fine, gauge, alot, volt, giving, happen, turn, imagination, starts, till, problems, 5sfte, crap, runs, leave, misfire, 19.7, 17.1-, backfire, time, lean, heats, work, normal, ratios, air/fuel

hey guys i have a 5sfte. ive had it for a while now and havent gotten a any problems till now. every night when i leave work i notice my car heats up normal and then the air/fuel ratios lean out to about 17.1- 19.7 and it starts to misfire and backfire. now in the day time. this does not happen!! lol what the hell am i looking at?! ive tested the air temp sensor, coolant temp sensor (replaced), map sensor, tps sensor, plugs. wires, coil. lol now i do notice that if i turn my lights off it