View Single Post
  #2  
Old 02-22-2006, 11:16 PM
KManiac's Avatar
KManiac KManiac is offline
AF Enthusiast
 
Join Date: Aug 2005
Posts: 579
Thanks: 0
Thanked 0 Times in 0 Posts
Re: Strange Sound On Shifting Gears

I knew it when I read your title. You just bought this car and it is the first Chrysler "ultradrive" 4-speed automatic you have ever driven.

The noise you hear sounds like a "buzzing" or "ratcheting" sound. It occurs whenever you pull your shift lever into "Drive", whenever the transmission upshifts out of low range on take off and downshifts into low range whenever you come to a stop. It is not very loud, but it is always there.

This noise is nothing to worry about. It is inherent to the operation of this particular transmission. The tranny is electronically controlled and the noise I believe comes from the electronic circuitry that shifts the gears. You can't get rid of it unless you sell your car. It is harmless and you will just have to get used to it.

I had a 1989 Dodge Caravan (1989 was the first year for Ultradrive) that made that noise and my 1998 Town&Country makes the same noise. I am so acustom to that sound that whenever I hear it, especially at a stoplight, I know immediately that the car next to me is a 1989 or newer Chrysler product.

Another feature of this transmission may not know about yet is "limp mode". It will surprise you the first time it occurs. When the computer senses a functional anomoly with the transmission, it will automatically shift into and hold the second gear range. It is a shock when it drops into limp mode above 45 mph! I would suggest you read about this in your owners manual as soon as possible. Limp mode can be cleared by shutting off the car and restarting it. I encountered limp mode once in my 1989 Caravan. It occured when I was driving in a heavy downpour. Good thing I knew what it was and how to clear it immediately. It never did it again. I have never had it occur in the 1998 T&C during the last six years, but I know that someday it will.

Just smile and enjoy your new to you car.
Reply With Quote