[C_a_R_f_R_e_A_k]

Check over all the grounds, the mr2's are very fussy with grounds, also unplug the fuel pressure regulator and see if theres gas in the vacum line if there is then the reg is shot, if not start the car and apply vacum to the reg if the idle doesn't change you either have a weak fuel pump or a bad reg, also check all the fuel lines for kinks or restrictions, when was the last time you changed the fuel filter, it could be plugged up, check spark, using a spark tester check for a good strong spark, at the coil and the plugs, if its a strong blue then its good if its a whiteish yellow check your coil resistence, if the coil checks out good check for a bad(cracked, pitted, heat scarred, oil soaked) pickup in the distributor, as for the airflow meter when air is sucking across the flap and the flaps open it completes the ground side of the fuel pump, so once you unplug it the ground can't be completed and hence the no starting and for the TPS its just a measuring device, the car will go into a limp mode(predetremined value set by the ecu) and run fine enough to make it to a repair shop, one more thing to check is the ecu, I was having running problems and checked everything then opened the ecm to find 3 capaciters blown apart and 2 diodes cooked