I recently bought a 2003 350z to replace my automatic 350z. Recently it has had a loss of power under any amount of acceleration. I put fuel cleaner in it just to see and it solved the issue. The issue came back 2 days later. I’m thinking it could be the fuel pump as the fuel pump is MUCH louder than the one in my last z. If not what could the cause be? Car has a clean bill of health from nissan.

 

Did you pull codes? As is the case with so many posts about power loss/limp mode here, no one can say with any certainty what the problem might be without codes, if present. All speculation and throwing guess parts at it.

 

I am in full agreement with Mic. When you experience a problem with your Z, connect a code reader. This is such an elemental step.

Something else...you get the best readings (i.e., information) with Consult for Nissan cars.