Shudder when I let off the gas.

Code read time. Maybe a misfire code . 2z A cycle seems to have head gasket sealing issues at mileage..purdy common it seems

 

What shudders? The steering wheel? Engine?
Need more information.
Check your wheel lugs, are they loose? Is the axel nut coming loose?
Is your tire tread coming off?

 

Maybe the wheel is out of balance, you could have lost a wheel weight.
Swop the front wheels, or swop with the left rear wheel.
If the shudder transfers to the rear, you know it's the wheel.

 

What’s the miles?

 

Ok man sounds good . Move coils and plugs around and play that game If it moves then you know what you got I kind of doubt it though unless they've been seriously neglected I don't know what oil changes equals head gasket blowing I don't think that really has a big thing to do with the head gasket blowing personally That's like engine flex between all the pieces that kind of thing open deck Good luck.

 

Since the "engine" appears to be okay, don't be fooled into switching coils and plugs around.
Without driving and experiencing in person, my "guess" would be a bad tire, or out of balance wheel.

Have you switched them and then driven the car yet?

 

Just for giggles have a look at the EGR pipe; it takes an hour or two::

I don't see frequent oil changes making any difference to the degree of carbon clogging in the EGR system. If you do opt to clean it, first two links in my sgnature have info. On a phone turn it landscape to see signature.

 

Okay, but did it change to the rear????
If it didn't, check the rotor, it may be warped. But you'd really feel it when braking.
Did you check the nut holding the axel in place?
If the shudder stays at the front left, you should check the whole suspension, brakes, and axel.
Something could be loose.

 

You should have said that in your first post.....
Time for new rotors. I doubt they are thick enough to turn.
At least they are easy to change, and not too expensive.

 

Haha I’ve been saying that for years here. It keeps ya guessing and speculating then bam! The most important info then gets added.