Can be many things. If the car is over 10 years old suspect a vacuum leak.
Check the idle, crankshaft and camshaft sensors.
miss alignment of tires
what does idle funny mean? Does the whole car shake? (upper engine mount collapsed) Or does the engine shake/misfire? (Intake manifold gasket)
have you tried to get your wheel realigned
Yes they can. It can also be a vacuum leak, or defective idle control valve.
Cylinder misfire. Possibly failed or failing engine mounts.
Check your motor mounts.
Engine miss or rough idle, or broken motor mount
its probably just your idle kicking in when u stop, this keeps your car ideling at a certain RPM so your car dont stall, and die.
If a 2001 Cadillac DeVille shakes when the car is idle, there could be an issue with the powertrain. There could also be a problem with the crankshaft position sensor.
Yes. A disconnected vacuum line will cause the engine not to idle at a constant rpm, therefore causing the car to shake.
Im betteing one of your motor mounts is broken and making the car shake. does the engine move when you gun it in neutral? ajust the idle of the car. The car has no idle ajustment it is controled by the PCM check the motor mounts and check your idle control motor. Also have you intake and plentium checked and cleaned also run some fuel injector cleaner every tank full. dirt420ba BE SAFE!!!!!