desertdatsuns.net

On the trip up to Williams and back driving my 240Z, I had two things happen that have never happened before. At least three times on the way up I watched the temperature gauge drop all the way to the lowest temp shown on the gauge and then recover to where it typically sits. On the way home I stopped in Munds Park to gas up, and for the first time ever the gas gauge registered slightly over full. Like most 240Zs, It has never registered even 3/4 of a tank when topped off. Ron Q has me worried these two things happening together portend something significant failing in the near future. Anyone have a reasonable for explanation for this???

Assuming the car still has the typical fuel gauge and temp gauge voltage reducer - That is where I would start. I think you know someone who has a bunch of digital ones he installs on the cars........

Yep. Both sound like electrical issues, neither overly concerning.

Reset the 0-full sweep on the fuel gauge, and maybe test that temp sensor - sounds like it lost connection briefly.

Yes Paul, I do know someone that has some digital step down voltage reducers. I'm not aware the Z has that like the Roadster, though I confess I'm not sure about that. I thought maybe I had a loose connector on the temp sensor, but checked it when I got to Williams and it was firmly attached. I have not metered it out yet, but it's fairly new (within the last 3 years) so I'd be surprised if it had failed.

Randy, it would be great to have another group "class" discussing how to correct certain electrical issues, one being how to correct the flaky fuel level reflected on the gauge! This seems to be a typical problem that most of us share. Whether pulling the gauge to remedy, or use Paul's fix, I would love to hear more about it!

What do you think Marmot (Paul)? Up for a tech session teaching us how to remedy the fuel gauge issue? You can use my storage area for the class. We had 10-12 show up for the tech session on SU carbs. Might be quite a number of interested people between DD and DZA.

Great idea, Randy! There might be one or two other common electrical issues that Paul might want to discuss, ie, battery drains, blinker issues, etc, depending on what the group wants to see. Might also provide some business opportunities for him!