When driving short trips @ 45-55mph my automatic shifts by itself down into first leaving me to be towed or limp home. Throttle valve has been changed but it still does this. It’s my pleasure car so i don’t have to rely on it but i want to solve this problem. My mechanic is stumped.
Talk to a good independent transmission shop in your area. It seems the transmission is going into “limp” mode and needs attention.
Thanks - I’ll try that. Think it’s time for a new mechanic - he told me no it’s not the trani when i suggested that.