If my car has been sitting for a day or longer and the engine is cold, the car fires right up on the first crank, but after I go for a spin and the engine warms up, the car cranks and will only start if I give it gas litke its a carborated motor. Any and all help would be greatly appreciated.
92 SC3 5-speed
-Newer fuel pump and injectors, less than 2000 miles on them
Thanks in advance

 

I'm having a similar issue, SC400 though auto... I'm thinking it's a misfire issue as it will turn on, but turn off right after. Turn over again and give it gas until it appears to stay on, will follow with really low idle so I'll have to make it idle at stops with gas and brake like a manual with a clutch, only reason I know is because the tachometer is operational, so I'm able to monitor which is rare... I also think it's the IAC valve as my Celica use to do this too, cleaned it and it stopped doing this... I also recently recharged the battery, so it may be something there too, and my wires are 10 years old, so that may be it too.... just my .02 cents

 

Hard start when warm is sometimes caused by a bad fuel pressure regulator or possibly a bad coolant temp sensor (sensor for the ecu).

 

I also have issues when its cold... its sat for 8 hours and when I go to turn it on it's hard to start as well... I recently topped off coolant as well and its surge idle has almost completely settled..

 

thank you, I was affraid of that, really wasnt trying to mess with the fuel pressure regulator, but Im going to check it next, The coolant temp switchs are all brand new as well.

 

thank you, I was affraid of that, really wasnt trying to mess with the fuel pressure regulator, but Im going to check it next, The coolant temp switchs are all brand new as well.