How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask sprinkles08 Your Own Question
sprinkles08, ASE Certified Technician
Category: Car
Satisfied Customers: 22986
Experience:  ASE Master and Advanced level certified. Factory trained with 15 years dealership experience
Type Your Car Question Here...
sprinkles08 is online now
A new question is answered every 9 seconds

Cadillac Deville: Have been experiencing a vibration like driving

This answer was rated:

Have been experiencing a vibration like driving over a rumble strip when I am accelerating up hill in my 2005 Deville. No one seems to be able to pinpoint the problem. Is torque converter a possibility? Transmission was completely rebuilt about a year and a half ago.

Hello and welcome to JustAnswer!


The torque converter is a very likely cause for the symptoms you have described. When the torque converter clutch chatters it will cause a vibration that feels like rumble strips, that is often how I describe converter clutch shudder myself. When accelerating while the converter clutch is still on you are obviously adding more load and this would be a prime time for it to shudder if it was going to.


One thing that I would do is ride with a scan tool attached and see if the converter is in lockup when this happens. If so, try pushing the throttle hard enough that it unlocks the converter or try tapping the brake pedal to try to unlock it, and see if it goes away. If it goes away when the converter unlocks then it's likely the converter.


Converter clutch shudder can be caused by the converter itself or sometimes a fluid issue will cause it. If the fluid is incorrect or there are additives in it then that could cause it to shudder. Flushing the trans using the correct fluid may help or take care of it, but it may need a converter.

sprinkles08 and 7 other Car Specialists are ready to help you