SW problem on TC74 temperature sensor (PICDEM2 plus board)

void main()
{
	int i;
	TRISB=0x0;
  	OpenI2C(MASTER, SLEW_ON);// Initialize I2C module
	init_LCD();

    SSPADD = 9;              //400kHz Baud clock(9) @16MHz
                           //100kHz Baud clock(39) @16MHz
                           
	// generates a start condition
	while(1)
	{
	

	
		
	Delay1KTCYx(10);
	StartI2C();                     // initiate START condition
	WriteI2C( 0x9A );
	WriteI2C( 0x00 );
	//StopI2C();


	StartI2C();                     // initiate START condition
	WriteI2C( 0x9B );
	data = ReadI2C();
	
	//NotAckI2C();
	StopI2C();

	fahr = (9*(long)data);
	fahr = fahr/5;
	fahr = fahr +32;

	for(i=0; i<10; i++)
	Delay10KTCYx(100);
	//floatToStr(fahr);
	//chaintxt(str,0);
	}
	
	
}

#define		TC74_READ	   0x9B
#define		TC74_WRITE	   0x9A   

//////////////////////////////////////////////////////////////
void tc74_write(unsigned char reg,unsigned char val)
{
i2c_start(); 
i2c_write(TC74_WRITE);    
i2c_write(reg);  
i2c_write(val); 
i2c_stop(); 
}  
//////////////////////////////////////////////////////////////
void tc74_read(unsigned char reg,unsigned char *value)
{
i2c_start();
i2c_write(TC74_WRITE);
i2c_write(reg); 
i2c_repStart();
i2c_write(TC74_READ);
*value=i2c_read(0);  //ACK 
i2c_stop();   
}