Probably not - it helps to say the make and model of your Heating System.
The flames make the water hot and the pump moves the heated water around the system - if the pump is defective then the risk is that the water might boil and there's a mighty explosion.
You need an expert to look at it - avoid the big firms.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix home heating systems.