Jump to content

alanburton

Oil pressure sensor 1983 280zx NT

Recommended Posts

Trying to figure out completely erratic readings on my oil pressure gauge. I ordered a NOS sender and it’s still crazy. So I’m wanting to narrow this down. There are two prongs on my sender and somewhere I read that one prong was for the meter and the other prong was for the oil warning light, is that true. If so the changes in pressure would result in changes in resistance to ground for reference. What I wanted to know was is the Oil pressure reading resistance across the two prongs for both the light and meter or is it reading reference of resistance to ground on each with one going for the meter and the other going for the light. Any insight here appreciated.

 

 

Sent from my iPhone using Classic Zcar Club mobile

Share this post


Link to post
Share on other sites
18 hours ago, alanburton said:

 What I wanted to know was is the Oil pressure reading resistance across the two prongs for both the light and meter or is it reading reference of resistance to ground on each with one going for the meter and the other going for the light. Any insight here appreciated.

You would measure from prong to ground, for each prong.  Edit - that would be with the sender in the block.  Otherwise, measure from prong to sender threads.  Grounding is through the threads.  One will be a switch and the other a variable resistance.

It's weird how bad the 280ZX FSM's are, considering how good the last 280Z FSM's were.  But I did find it illustrated on page EL-90.  I don't think that they wrote a single word about the oil pressure sender.  This diagram is all there is. @alanburton

image.png

Edited by Zed Head

Share this post


Link to post
Share on other sites

Appreciate the feedback. Looks like the variable resistance connector goes to the meter with the changes in resistance to ground results in changes to the oil pressure meter while the other prong goes to the oil light and goes to full ground potential when oil pressure is not present. If that’s correct I at least know how to start testing.


Sent from my iPhone using Classic Zcar Club mobile

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Recently Browsing   0 members

    No registered users viewing this page.

  • Who's Online   5 Members, 1 Anonymous, 41 Guests (See full list)

  • Search Engine Meta Tags:
    classic, z, datsun, 240z, 260z, 280z, zcar, zed, s30, classiczcars.com, 240z.org, fairlady, 240, 260, 280, nissan, 240 z, 260 z, 280 z, zx, turbo, classic z, 280z cars, cars 240z, car forums, datsun, nissan, cars datsun, car club, 280zx, car, nissan zcar, classic z car,performance,300zx, car years, car raced, texas 350z, 300z, 350z, nissan racing , clubs car, zcca, club datsun
×

Important Information

By using this site, you agree to our Terms of Use. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.