Bad shake in heat at about 30-60mph1

[Punk23]

Having trouble figuring out why my ss shakes at only at about 30- 60mph in the heat drives fine in good weather but if its really hot out it shakes violently my engine temp is running normal at 210 but does seem to get a little hot after longer drives to where you can feel it from outside the hood

[dcairns]

Do you feel the shaking in the steering wheel or is it the engine shaking?

[Punk23]

It has to be the engine because it only does it in the heat it drives perfect during good weather i just replaced an 02 sensor because i was running lean in bank 2 but im also getting a code for a vacuum leak so im going to fix that next