no valid response for ps noise
 

Please, I really need all your help.

This is the case.

Before the winter, I added Lucas PS additive in my pump. Once it started to get cold, -5 degrees celcius, it started to make a noise for 1 second on start up. Thwen it went away. afterwards, once it is warm, it does not do anymore. but, the next day upon cold start up it happens again. i have already flushed the ps pump 5 times from the top.

now, either it is the strap, or is the ps pump screwed


i really need help please.

thanks