i have a 90 4runner sr5 3L v6 automatic . and have been having some inconsistent problems for the 2 years iv owned it. when coming up to a red light or stop the idol will jump around and potentially stalls if gas is not immediately applied. when using things such as heat wipers and signals play effect with idol but not all ways . Now recently it doesn't like starting every time .some times i have to give it a little shot of starter fluid and then when she starts it will run like crap even when you rev it up it will sound inconsistent but then it eventually works it self out and will run fine for a random length of time . what do i do ????