If a wisdom tooth is trying to come through but can't due to the back molars being there can this cause dizziness lightheaded? had these symptoms.

Not likely: These symptoms are most likely caused by other issues. Wisdom teeth erupting are often symptom free and if they are impacted with partial eruption into the mouth they can sometimes become infected around the gums of the area of impaction causing pain, swelling, and other locaized symptoms.

Wisdom teeth: No. Impacted wisdom teeth are not likely to make you dizzy. They can be potentially painful and depending upon the level of impaction may lead to infection, but it is likely that your lightheadedness is from a different cause. Best to consult your doctor.