My engine shake when iidling

If your car is shaking while it's on but not actually moving, then it's likely not the tires. This usually means there is something broken in the engine, such as the radiator fan or engine mounts. Fuel system issues can also cause the car to shake even while standing still.

Why Is My Car Shaking and What to Do About It? - EnkiVillage

www.enkivillage.com/why-is-my-car-shaking.html 5 Causes of Engine Vibration

If your car is shaking while it's on but not actually moving, then it's likely not the tires. This usually means there is something broken in the engine, such as the radiator fan or engine mounts. Fuel system issues can also cause the car to shake even while standing still.

Why Is My Car Shaking and What to Do About It? - EnkiVillage

5 Causes of Engine Vibration

no engine stated (fail time. that)
why the pump , tell reason first not mid story.... works best......!!
engine starts and stalls and misfires badly.
this can be caused by 50 thing's , NO KIDDING!
but in a real shop? we use Physics to find it. 5 rules.
5 tools. to measure the physics.... far more easier than guessing ever will be....
Ill give wild useless guessing now, as most seem to want here.
no tools, no gauges, no $10 elm scan tool.. (USA answers all)

1: lost 12vdc power to the EFI and spark systems.
2: bad engine, low compression , or never changed the cam belt.
3: bad spark, not doing a full tunup in a decade. top cause world wide.
4: EFI system OVER or under fueling for any of 20+ reasons... scan it yet?
5: other causes, making engine useless. EGR stuck open, or CAT melted closed.

each path as a simple tests.
wanna gue$$ or TEST?
your call......

no engine stated.??????????
303 is gross misfire on #3 cylinder. on all cars.
its a for sure thing, means bad combustion on #3 and its power is weak. 1763 is tranny The 7 means that. and is problem2.

ever get a 60k miles tunup this decade?
sparks plugs, spark wires, filters, air and fuel>?
spark plugs dont last life of any engine.
THE CEL blinking (oper guide tells) means that misfire
is burning the CAT converter to a crisp. (raw fuel + air does that)
the opr. guide says get it serviced, fast, dont drive fast or tow anything. all great advice in the glove box.

get a cheap tuneup, and magic can happen in most cases.
misfire has many causes. over 20.
but a tuneup not done, is 99% cause. (due to nobody doing them)
only fate , determines truth, not statistics....
for example you sucked a valve on #3..

if the new spark parts dont fix #3 a compression tests is next.
or an injector balance test say from #3 to one other injector.
all this is like 1hr work, but no engine stated, so.....

Mrs Amanda when you said on pushing the gas pedal is shaking do you mean the whilst accelerating with engine running ( reving) you do receive a shake? or when pushing the pedal you do feel on the pedal with engine off a shake? If it is the first check for any spark plug or spark plug HT Lead not working and cause the engine to shake. If is the second cause then check for your pedal connection cable etc.

AC compressor put load on engine causing engine shake vibrate.but check make sure AC compressor mounting bolts tight and drive belt correct tension.now if AC compressor very old most time bad compressor cause more load on engine causing shaking real bad.

c/k the tunup sounds like miss fire

If it ain't broke don't fix it.:) Just oil is all that is really necessary

there are a couple of hunderd diff things that can turn this light on, u need to have the system tested to determine what the code is that was stored with the when the light came on.

Your egr valve is stuck open tap on it with a small hammer to losen up the carbon build up.