Kiroshu

My Dads 1990 4runner 3.0 threw a code for ingnition signal issues i forgot what number the code was i believe it was 43. It does have a prob when you start it up no matter where or what temp when it starts it idles at like 200-400 rpms until you give it gas then after its warmed up it will idle about 600 which is still low.... i need to know about how to check the ingnition prob.