Engine shake - Gen3 2013 Prius

Clean the the intake manifold and throttle body add a oil catch can, if it consumes antifreeze then you have blown head gasket

 

Did you clean the EGR cooler and pipe? These will be pretty clogged up when approaching 100K miles. Clean the EGR Throttle is not the same as cleaning the EGR cooler.

 

Watch Video #17 here for complete EGR cleaning:

Nutz About Bolts Prius Maintenance Videos | PriusChat

There's several other related videos worth to watch too, in particular EGR Pipe Cleaning (#16), Intake Manifold Cleaning (#24) and Oil Catch Can Install (#25).

More info:

The simplest way to see where you're at, is to check the degree of carbon build up in the EGR pipe, a stainless steel connecting pipe between the EGR valve and intake manifold. Watch @NutzAboutBolts video #16 here:

Nutz About Bolts Prius Maintenance Videos | PriusChat

Two or three other videos linked there too, for the full cleaning of the intake manifold, full EGR clean, and Oil Catch Can install.

Good thread:

EGR & Intake Manifold Clean Results | PriusChat

Another:

Oil Catch Can, Eliminate that knock! | PriusChat

Some tools worth having:

E8 Torx socket (mandatory)
E6 Torx socket (optional, but good to have, to remove the throttle body studs from intake manifold)
3/8" ratchet wrench, regular and long handle, flex head, you can never have enough (or 1/2 plus reducer)
1/4" ratchet wrench, or 3/8" to 1/4" reducer
Ratchet extensions: you can never have enough
Long needle nose piers, straight and bent tip
Ratcheting 12mm box wrench (optional, but makes disconnection of the EGR cooler from exhaust easier)
Torque wrench (3/8" and 1/4" both good to have)
Floor jack and safety stands (or ramps): basically some method to raise front, if you need to take underpanel off, which you may need to, both for access and to recover dropped items.

 

Of course they will. It’s a way to get you back in the door again. Hook line sinker, They’ll then take the cooler out and clean to milk you for more money.