I am having trouble starting my 1998 toyota tacoma 2.4 sr5 ext cab. I have to press down on the gas to get it going in the morning especialy when cold or the engine is cold. No performance issues when running nor check engine light I cleaned the IAC, I took it of the throttle body and cleaned it. The problem went away now came back after 2 months i think.Mabey it is the iac or something else. It has a kn filter and some Downey longtube headers.If anybody could help thanks