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i just recently purchased a 2004 350z- base model. At the dealership- the fuel level low light was on and the DTE was “- - -“ I just thought the car’s fuel was low. Of course the purchase was “as is” but after my purchase I had a 3 hour drive home so the first thing I did was hit the gas station and well- the fuel gauge didn’t work.
When I got home I cleaned the fuel level sending unit mechanism with a Q tip, re-installed everything and still nothing is reading on the gauge. I went ahead and bought a new fuel pump. I installed it yesterday and I’m still reading empty; I made sure the float wasn’t hung up on the wire in there too.
I’m not sure what to do now- any pointers are appreciated. I was thinking on grounding out the sensor wire and seeing if that did anything on the gauge but other than that not sure what to do. I have code P0461 too for the fuel level sensor “A”
Last edited by M1dn1ght_Z; Oct 7, 2018 at 04:34 AM.
Reason: Adding info
I really appreciate that- I will give it a try. I was thinking possible connection problem too; if that harness isn’t connected just right to the fuel pump, I noticed it cuts off. Think some dielectric grease would do the trick?
Dielectric grease will certainly help. Remember there are two fuel level sensors wired in series; one on the fuel pimp assembly and one on the other side of the tank behind the driver's seat.
I’d shake your hand if I could, thanks for that info! I didn’t realize there was another fuel level sensor located behind the drivers seat; definitely going to investigate that sensor. This is a completely new platform for me; I’ve had a 2001 Integra Type R for years and I finally wanted to get into a newer car. Thanks again and I’ll keep you posted!
Glad to help. You really need to get a copy of the Service Manual. Unfortunately the free downloads were pulled from the web. For model year 2004 Nissan published 2 manuals; MY2004 and MY2004.5. The later cars had several changes, most notably in the engine management area.
Just wanted to give a quick update. I managed to locate my problem. As soon as I took the subwoofer out and went to reach for the fuel sensor wires- I found they were both torn in half. I de-pinned the plug and ran two fresh wires and now I’m golden! Thanks again for your help telling me where that sensor was.
Glad to help. You really need to get a copy of the Service Manual. Unfortunately the free downloads were pulled from the web. For model year 2004 Nissan published 2 manuals; MY2004 and MY2004.5. The later cars had several changes, most notably in the engine management area.
OP - hit me up if you want a link to a downloadable copy of the FSM. The link I found a while back is still active
350Z Fuel Gauge Reads Empty
