transmission does not work
speedometer does not work
cant go over forty
three problems
first guessing your exhaust is plugged why you cant go but 40
dodges are bad about transmission problems
i have one my self and speedo wel that might be fix coul dbe a few things dash speedo cable or a sensor but id have the trans check and the exhaust
yep sounds like ur speed sensor took a sh!t......replace it and hopefully that fixes it.....also on dodges to reset the trans computer u disconnect neg batt cable for 8 seconds then reconnect and repeat 5-6 times.....