Ever since a couple of weeks ago, about once a week, my car wouldn't want to turn on. I would have to take keys out and try 3-4 times again before turning on, and then it would run without any problems for at least another week. I started noticing that it was the fuel pump that wasnt turning on because I wouldn't hear it turn on whenever I got this problem.

Friday my car turned on, ran fine, and then when I tried to turn it on again later that same day, the fuel pump wouldnt turn on, at all.

I changed the fuel pump back to the stock, then back to the walbro 255, and neither turns on/powers.

I am starting to think that its the fuel assembly, and will be trying on a local's Z fuel assembly on my car tomm and hopefully it starts.

But until then, anyone else had such problem, or have any ideas?

 

I'd be more inclined to look at the relay that provides power to the fuel pump. It's in the IPDM, which is near the windshield under the hood on the passenger side. It's the middle relay in the stack of three on the engine side of the IPDM, according to the 2007 service manual.

 

checked today, and there is no power going to the fuel pump at all (voltmeter) and there is also no spark. I am guessing its in limp mode, having it towed to nissan tomm

 

If all elese fails check the ECU. Happened to me.