Hi , my goodman furnace gmp075 3 furnace ,inducer turns on ignitor glows ,burners fire for about 5-7 sec,then turn off blower doesn't come on,but if I let it cycle about 5 times then the blower does come on and it works fine,can anyone tell me what's wrong, thank you

The sensor is dirty remove and clean with a brillo pad it is usually is located on the left side of the burners

Did someone say flame sensor?