Car won't start quit running lost power. 1998

My 98 Camry would turn over but wouldn't start one morning. Then it started to be an every now and then it would start type thing. When it would start, it wasnt idling properly. After changing the fuel pump, air filter, vacuum hoses and the intake air control valve, I finally realized it was the EFI water temp sensor. I couldn't figure it out because the EFI doesnt always throw a code. Try replacing the EFI water temp sensor which is about $40. If not that then try your intake air control valve, give it a good cleaning before replacing it. My 98 Camry would turn over but wouldn't start one morning. Then it started to be an every now and then it would start type thing. When it would start, it wasnt idling properly. After changing the fuel pump, air filter, vacuum hoses and the intake air control valve, I finally realized it was the EFI water temp sensor. I couldn't figure it out because the EFI doesnt always throw a code. Try replacing the EFI water temp sensor which is about $40. If not that then try your intake air control valve, give it a good cleaning before replacing it.