Fitted a Bosch 023 fuel pump to my car when I first bought it, went fine for about 9 months when all of a sudden the pump started making a lot of noise, loud buzzing. Changed the pump and thougth it was wrong with the pump. Now, roughly 9 months later I've got the same problem again! Suggestions please! Changing fuel pump every 9 months will get expensive in the long run... And its a boring job.

 

Do you let the fuel level run low ? You might have debris in the tank that the pump is sucking up. Just a shot.

 

Normally fill between 35 and 40 litres, so should be plenty left everytime. So shouldt run dry or anything really...

 

Mine used to do that from time to time, just left i alone. seemed to come and go.