Having problems with your 1989 Plymouth Sundance ?
Is a plymouth sundance 1989 with a rear end clunk/rattle noise when driving over rough roads
I believe your car is equipped with Rear Coil springs and Shocks. You should start with inspecting the Shocks and the mount points on the top and bottom. Also check the Sway bar bushings and end links. When the Sway bar end links brake you don't notice much difference in the way the car drives except for the noise when you hid bumps, so that may be a likely source of the noise.
Check shock mounts,check exhaust system for loose, check brake hardware. check spare tire not secured tight. remove or strap dowm any loose objects flying around in trunk
Repair Help & Product Troubleshooting for 1989 Plymouth Sundance
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