My car decides when it wants to start

[west_side_supra]

exhaust smell is from running rich. as for it starting fine when cold but dieing when warm makes me wonder if your injectors are messing up. the IAT "intake air temp sensor" is exactly what it says, it reads air temp to adjust the amount of fuel, the 02 sensor usally doesnt do anything, at least it never did for me. the nuteral switch is just for your clutch pedal, its a little switch that when the pedal is fully depressed that it hits the button so power can continue through the system to allow you to start it. i recommend testing your IAT first, because i have seen many cars run very like crap with this part messed up or missing. as for the location of the IAT i have no clue, thats something someone else could help you out with or look in the TSRM for all the information

[carfanatic89]

well now it changed it will start all the time but now when its warm it you have give it gas right after it starts or it wil die and it misses for about 40 sec the runs smooth without missing at all, doesnt really make sense but im gonna check the sensor and see what i can find

[suprra_girl]

sounds like your afm has bitten the dust
code 31 is a sure sign of that or you have bad wiring from the afm to the ecu

[carfanatic89]

i think its the injectors im going to do a fuel pressure test and go from there. If it is the injectors, on a NA whats the bigest cc injector I can go with out flooding out the motor or changing out or adjusting the ecu

[carfanatic89]

was looking around on the internet an I saw that you could adjust the AFM, and that the OHM resistance of the new injector needs to be the same. so how big could I go if I adjusted the AFM and cept the ohm resistance the same

[carfanatic89]

anyone????