Quite possibly a vacuum leak, or problem with fuel flow. Vacuum leaks can be bad at idle and cause it to stall, a fuel problem would make it very difficult to move at all.
I am currently going thru the same thing. It is either the throttle plate or the recall that during engine movement causes the throttle-cable housing to pull out of its guide.
If you mean when you are coming to a stop, and press on the brakes, you feel a vibration- this most likely means that your brake rotors are warped and need to be turned. If you mean you are already at a full stop, in idle, and you press the brake and feel a vibration- it may mean a vacuum problem in the engine or something like that. So it depends- is it your brakes vibrating, you feel it in the pedal? Or is it your engine suddenly running rough and the whole front end of the car shakes?
A faulty fuel injector can cause your Ford Windstar to run rough and feel like it's going to stall. A dirty or plugged air filter can also cause the vehicle to stall.
Well, the compressor might be loose, so when it's engaged, it shakes and thus shakes the entire engine. Or, you may have a loose or broken motor or transmission mount. If this is the case, you would commonly feel some shaking that doesn't feel right and this shaking could be worsened by the compressor being engaged.
You may have something wrong with your engine.
pcm is going into default mode you likely have a bad cam sensor
if the steering wheel shakes there can be a problem with alignment. shaking when braking would probably be a brake problem. constant shaking i'd expect you should check the muffler If the front end of your car shakes when just driving normally, your front end probably needs re-aligning. If it shakes when you apply the brakes only, your brake rotors are probably warped and need re-surfaceing. Impossible to answer question, please be more specific. It shakes when... I feel it shake in the steering wheel when... I'm driving along and... etc. It depends on WHEN it shakes. Low speed driving: damaged tire, U-Joint, ignition misfire, burned valve, low engine RPM. Highway driving: loose steering, faulty ball joints, tire balance, bent wheel, tire damage. Engine idle: burned valve, ignition misfire, motor mounts, low engine RPM, dirty injectors, EGR valve... All of the above plus quite a few other possibilities.
When you stop and feel a pulsation in the front wheels which you will feel in the steering wheel, this is a sign you have a wrapped rotor. But you mention it is worse when you turn on the A/C which would indicate your idle control motor may be bad. This increases the idle when the engine is loaded, as in the A/C on.
It's difficult to get a feel for what you mean when you say your engine shakes. Do you mean a regular shake? If that's the case it might be a bad valve, sparkplug, plug wire or injector. If you mean that the engine moves quite a distance when you put it in reverse, but then comes back, it could be a motor mount. Please feel free to send an e-mail directly if you want to discuss the situation further.
bad tires or bad alignment or both.
If the coolant reservoir is low or empty, I would say you have a bad head gasket.
One common problems is a plugged catalytic converter, if the engine starts fine and then starts to stall or feel like it does not have any power after running for a while it could be the catalytic converter.. the engine starts loosing power because the exhaust has nowhere to go (the catalytic converter is partially or totally plugged) Compression starts to go down causing the engine to stall or die. If you leave the car alone for a while the pressure in the engine goes out slowly thru the catalytic converter leaving the car ready to start again for a few minutes but it will shut down again.