Hi everyone i have this problem with my gearbox on a 4.0 lt non vvti 4speed automatic lexus v8 ....so some times it changes up to fast and it doesn'twhant to kick back down as you whant to go faster and when you slow down it stalls my van so i have to stop completely and put it in park then start and go or the time it doesn't stall it wil almost stall and the refs drop then it kicks back to 1st hard...or just simply stay in 2nd or 3rd gear when i whant to pull away again soo then i have to put it in 1st then pull away or park and switch off my van then start and select drive and go but the main problem is that the van is stalling when i drive and i slow down to stop can some one please give my advice as to resolve this issue...wayne