You don't set off a knock sensor, the knock sensor retards the timing when it detects a knock. You can test it with a timing light. Watch the timing marks as you tap on the engine block right near the knock sensor and you should see the timing retard when you tap.
The reason I thought maybe motor mounts is because if the engine lifted up going around a turn, it might pull on a wire or fuel line, etc making is misfire.
Is it sputtering when making a sharp right hand turn or will it also sputter just in park and turning the steering wheel to the right?
What I would do is hook up a fuel pressure gauge, a voltmeter to the alternator, a tachometer if it don't already have one and anything else you might have and watch these items as you make it sputter and try to catch whatever it is in the act. The tach would should if the ignition is loosing primary voltage, of course the fuel pressure gauge if the fuel pump is shutting off, the voltmeter is the alternator quits, etc.
Also, retrieve them codes.
I don't know what " survival mode " is, perhaps lymp mode.