2D AI flips upside instead of rotating Left?

Basically whenever I go to the Left of my AI he flips upside but continues to keep moving, Any Fixes? I put example and my code!

 public Transform target;
 Quaternion enemyRotation;
 Vector2 playerPos, enemyPos;

 
 void Start ()
 {
     enemyRotation = this.transform.localRotation;
 }
 
 
 void Update ()
 {
     playerPos = new Vector2(target.localPosition.x, target.localPosition.y);//player position 
     enemyPos = new Vector2(this.transform.localPosition.x, this.transform.localPosition.y);//enemy position
     if (Vector3.Distance(transform.transform.position, target.transform.position) > 1.5)//move towards if not close by 
     {
         transform.position = Vector2.MoveTowards(enemyPos, playerPos, 2 * Time.deltaTime);
     }
     if (Vector3.Distance(transform.transform.position, target.transform.position) < .4)//move away if too close 
     {
         transform.position = Vector2.MoveTowards(enemyPos, playerPos, -1 * Time.deltaTime);
     }

     if (target.position.x > transform.position.x)//rotates enemy to the right if player is to the right  
     {
         enemyRotation.x = 90;
         transform.localRotation = enemyRotation;
     }
     if (target.position.x < transform.position.x)//rotates enemy to the left if player is to the left 
     {
         enemyRotation.x = 0;
         transform.localRotation = enemyRotation;
     }
 }![alt text][1]

[1]: /storage/temp/88746-zoe.png