The loud hum could be caused by some of the teeth going out on the transmission or that the transmission is failing.
If it's knocking it's probably a rod going out - if it's ticking it could just be the valves - Rodeos are notorious for value noise...
Your transmission could be going bad
if you have an automatic transmission there should be cooling lines going to the radiator to cool the transmission fluid the lines could be leaking or the tank could be leaking
Depending on the speed you are going, yes it could really kill your transmission and your engine! But don't be afraid, your car is not suppose to allow your transmission to downshit if your going to fast for that gear.
It could be a number of things going wrong. Try dropping the transmission pan and changing the transmission oil filter and transmission fluid.
by me knocking u out
Could be low fluid,a bad sensor or transmission going bad.
It seems to me that it could be the transmission going bad I am not 100% sure. Visit www.siennaclub.org I am sure you can get better answers there.
because the world is going to end
Could be the brake caliper or the CV joint going.
I would check the suspension bushings, if one of them is worn it would cause a knocking noise.
There are a couple of reasons why you car is jerking when you are going below 60. It could be the result of a problem with your transmission, or your fuel pump could be going.
The transmission is the same.
you could be running low on transmission fluid, or your torque converter could be going out
Could also be the harmonic balancer. When they go bad they make a knocking noise when the engine is idling. If it has a rod or main bearing going bad it would NOT affect the way it runs so you could have a serious problem in the motor itself. If the rod or main is going out it will not run long like that. SORRY TO BE THE ONE TO TELL YOU THIS. Ray
my mother has a 2003 town and country and for months we heard the same noise then her transmission wouldn't shift out of 2nd gear here it turns out the computer (tcm) was going bad and it was in need of replacement,if the tcm isn't working properly then the transmission doesnt shift right
get a new trany or rebildit cuz its going out unless the knocking is from moter it might be timing
This problem could be the linkage in the transmission. The transmission could also be going out and would need replaced.
First you should Check out your Transmission oil level that could cause your car too jerk into gear. The only other thing it might be if the transmission is going bad and you should have it checked by a transmission specialist
Possibley, the Clutch sensor, or the transmission is going.
it sounds like a bad throw out bearing or clutch plate. not a major deal it just starts to get louder but eventually you going to have to replace it when you do your next clutch job. chris
water in distributer, wet spark wires
If your transmission is manual, you will have to change gear. If it is automatic, you won't.