low oil pressure light (75 280z)

[Dave WM]

there is a mention in the owners manual about a low oil pressure light? this is addition to the oil pressure gauge. I never saw a provision for a light like that in my 75.

[zKars]

There is no provision for low oil pressure warning lights up to 78, maybe you're looking at a ZX manual?

The oil pressure gauges don't have a warning light, just the voltmeter. Let us know where you saw this mentioned in the manual.

 

[Dave WM]

recently down loaded pdf of a 1975 on this site. Page 14

 

Thanks 2377kN!

Edited November 15, 2018 by Dave WM

[Dave WM]

more fun, page 98 front end shimmy, lol no kidding even when new. IIRC our 74 260 shimmy was fixed by getting rid of the turbine mags and going with stock steel rims. Always fun to read old owner manuals to see what the issues were back when new.

[2377kN]

I had to do a double take when I read about the oil pressure light, or lack thereof.  Page 94 is a fun read with passing times.

[Dave WM]

pg 35 fan control setting "4" is for emergency air... I guess the implication is you should not run it in that position for extended periods. perhaps the fuse getting hot was an issue even back then.

[Zed Head]

They fixed it in 76.  No mention.

[Captain Obvious]

I have one in my 77. Tied into both the temp and oil pressure:

 

[Zed Head]

Does it show in the FSM?  You made me go out to the garage to confirm that my 76 has no light there.  Maybe Nissan was foreshadowing.

76 FSM - 

Thy do show the Fuel Warning lamp -

[Zed Head]

31 minutes ago, Captain Obvious said:

I have one in my 77. Tied into both the temp and oil pressure:

That's a CO mod isn't it?  Dang it.  I want one.

[Captain Obvious]

Haha! Yeah, I put that in.

Here's a thread about the mechanical part of the project. Pretty straight-forward:
https://www.classiczcars.com/forums/topic/59361-temp-gauge-warning-idiot-lamp/

The real magic (and difficult part of the project) was the electronics behind the scenes to unobtrusively sense the signals and light the LED.

It all sounded so simple at the beginning... Couple of comparators, some resistors... You're done, right? Well, to make a long story short... After scoffing at a friend's suggestion that I should just put a microcontroller in there and do everything in the digital realm, I ended up doing just that. After much comparison of different designs, I was able to Muntz a microcontroller based version down to about half the number of components required to do it all analog. Counter-intuitive, but true.

So, in the end... the only computer controlled electronics in the car is that warning lamp, and I've got more processing horsepower in that little gauge than the first desktop PC computers. It cost about five bucks worth of parts and took me pretty much all of last winter. So it cost $thousands in labor.  

Another typical case of processors working differently in a sterile bench-top environment as opposed to the real world installation.

It's done.
It works.
And I'm glad it's over.  

Edited November 16, 2018 by Captain Obvious
speling

[Dave WM]

lol to the Muntz reference !