You're not likely having hard hot starting problems because of sensors.

Instead your engine's likely flooded and you can test by holding throttle partially open while cranking.

Flooding is result of leaking injectors and the fix is new ones.

Flooding has drained away and otherwise isn't a problem with cold engine.

Messing with sensors obviously doesn't "unflood" the engine, and in fact will cause an even richer mixture making the problem worse.

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Kent Christensen
Albuquerque
'07 GL320CDI, '10 CL550. '01 Porsche Boxster
Two BMW motorcycles