My 2000 4-cyl A/T OBW has 120K; all original suspension components; never wrecked; new tires. If I'm going about 50 mph and back off the throttle, the car 'trembles' briefly as it decelerates. Also trembles/shakes at low speeds with uneven curb cuts, speed bumps, etc. What is the likely explanation? What bushings/mounts/etc. typically wear out by this mileage and might explain this problem? TIA.

There are these things called tune-ups.

 

Thats the first place to start

New OE wires

New OE recomended plugs

fuel filter

PCV valve

Air Filter

 

If there is oil on the tip of the old plug wires you will need new valve cover gaskets and seals.

 

Then after that if we still have an issue we will dig further.

 

nipper

Nipper:

 

Thanks for the suggestion but all of that has been done within the past 10K. The 'tremble' that I describe is a suspension/engine mount/bushing sort of problem.

Any axles replaced?

 

 

Any Codes or CEL?

 

 

Inspect the transmission mount.

 

and thrpttttt for making life hard for me. ALso check for vacume leaks.

I truly hope an airfilter has been changed since 10,000 miles ago.

 

 

hehehehe

Front axles replaced about 12K ago, with MWE. Air filter replaced recently. No codes.

I dont like you.

 

 

 

 

 

 

 

 

How long have you had this problem. Is ti warm eh nough for you to use a spray bottle of water to look for vacume leaks?

Maybe a u-joint going bad

Maybe a u-joint going bad

 

or a carrier bearing.

something as simple as tires wearing out?

Raise each wheel and wiggle it around to see if there is play. Also if you can get under the car shake the driveshaft and see if there is any play up and down which could indicate the carrier bearing.