HELP Oil Pressure gauge install??? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

juls213 · 02-24-2008, 02:08 PM

HI I bought an oil pressure gauge from a member. I want to know how to install it. I installed it already but it is giving me the wrong readings. Its a 4 wire system. Here is how I installed it
red : 12v source voltage
black: Ground (-)
purple: 1 wire going to electronic oil pressure sensor
orange: ?????

What is happening is I am getting 60 psi in the highway and 0 at idle, but the weird is in the highway the 60 psi would change when i turn on the light the psi goes down to 50, then I put on another load and it goes down even more.

Can anyone tell me how they wired their oil psi gauge, thanks

importdude · 02-24-2008, 02:28 PM

ground to a good source metal"
use a volt meter to check the ground source
u want to be very close to 0.0 omh anything .3+ i would change

orange should be illumation(lights)

when i had a bad ground i had zero oil pressure too at idle
and when i drove long periods of time, it would drop drop drop
til it hit zero, and it wont be working until i stop/ restart the car

fixed it with a better ground

undesiredshoe · 02-24-2008, 05:14 PM

Why dont you type up the name of the company that makes the gauge in google and maybe they'll have instructions.

Gjohnson7 · 02-24-2008, 07:44 PM

I'm with importdude, you need a better ground.

gotta240 · 02-24-2008, 10:33 PM

Is the factory oil pressure sender accurate and trusted?

Sir · 02-24-2008, 11:37 PM

nope its junk and ends up leaking.
and by accurate do you mean when the light turns on are you fucked? yeah, pretty much.
it doesn't give you a readout like a gauge would.

gotta240 · 02-25-2008, 08:30 AM

So there is no point in adding an aftermarket electric oil pressure guage that connects to the factory sender.... correct?

bigOdom1 · 02-25-2008, 08:35 AM

i just tapped into my oil line off the turbo with an electrical gauge works perfectly fine

McRussellPants · 02-25-2008, 08:35 AM

no point to using the stock sender.

no point to using autometer.

both are just as inaccurate, but when their powers combine maybe...

bigOdom1 · 02-25-2008, 08:43 AM

autometer gauges aren't jdm so they are crap? how is it inaccurate when they are relied on more than any other gauges? think about it they are the most common brand when you see the muscle cars and other v8's they usually use autometer also. im just saying thats a pretty broad statement

punxva · 02-25-2008, 08:49 AM

i've got the autometer, and just got a defi unit, both read the same pressures throughout, i'd go and get the aftermarket sending unit from autometer and that'll make the readings correct

bigOdom1 · 02-25-2008, 08:52 AM

exactly, the autometer unit doesn't just happen to show what it should on five different gauges

punxva · 02-25-2008, 09:27 AM

i was stating that i changed it out with the defi unit as well and they read the same

240trainee · 02-25-2008, 11:51 AM

Where are you guys installing the sensors? I was thinking I'll just replace the shitty stock one with the shitty gauge I just got, no need for the stock one really. now to find out thread pitches and how I'm gonna do it, lol.

lonelydrifter · 02-25-2008, 02:57 PM

I installed mine in the stock location. Had to use some different NPT to BSPT adapters though.

Make sure your battery is all good. When my battery was starting to die both of my electronic gauges read horribly wrong.

If your battery is good then you are getting bad ground or bad power.

240trainee · 02-25-2008, 04:00 PM

They are both 1/8" right, just different threads?

friend of mine knows some folks at a machine shop or something, just have to tell him the right thing to pick up.

I'm gonna get a tomei oil adapter block thing in the future, just need a solution for now.

gotta240 · 02-25-2008, 07:12 PM

Do all mechanical guages have a supper crappy, thin, hard white plastic tube that carries the oil to the guage, or is mine just extra crappy?

I'm very nervous that the 1/8 tube could break or become punctured, causing a motor fatality...

anyone else know what i'm talking about?

lob@ller · 02-25-2008, 07:20 PM

Quote:

Originally Posted by gotta240

Do all mechanical guages have a supper crappy, thin, hard white plastic tube that carries the oil to the guage, or is mine just extra crappy?

I'm very nervous that the 1/8 tube could break or become punctured, causing a motor fatality...

anyone else know what i'm talking about?

Yeah that's like the super cheap/old school mechanical style gauge. Try to get one with an electric sensor...

slider2828 · 02-26-2008, 01:03 AM

Yes all mechanicals do have a thin tube. Get an autometer electronic for 50 or so dollars. Use an adapter from Nissport and is an adapter that tips to the stock sender location. Clean and easy and please tighten the hex caps on the sides when you buy and all products are CNC'ed. Nissport is awesome and no I don't work for them.

02-24-2008, 02:08 PM	#1
juls213 Leaky Injector Join Date: Feb 2006 Location: NJ Posts: 95 Trader Rating: (0) Feedback Score: 0 reviews	HELP Oil Pressure gauge install??? HI I bought an oil pressure gauge from a member. I want to know how to install it. I installed it already but it is giving me the wrong readings. Its a 4 wire system. Here is how I installed it red : 12v source voltage black: Ground (-) purple: 1 wire going to electronic oil pressure sensor orange: ????? What is happening is I am getting 60 psi in the highway and 0 at idle, but the weird is in the highway the 60 psi would change when i turn on the light the psi goes down to 50, then I put on another load and it goes down even more. Can anyone tell me how they wired their oil psi gauge, thanks

02-24-2008, 07:44 PM	#4
Gjohnson7 Zilvia Addict Join Date: Mar 2004 Location: Broken Arrow, OK Age: 44 Posts: 980 Trader Rating: (7) Feedback Score: 7 reviews	I'm with importdude, you need a better ground. __________________ LSX Kouki Project, swap completed in Dec 09

02-25-2008, 08:35 AM	#8
bigOdom1 Nissanaholic! Join Date: Nov 2005 Location: Auburn/Birmingham AL Age: 41 Posts: 1,817 Trader Rating: (4) Rides Gallery: bigOdom1 Feedback Score: 4 reviews	i just tapped into my oil line off the turbo with an electrical gauge works perfectly fine __________________ my car domain that good review thread

02-25-2008, 08:43 AM	#10
bigOdom1 Nissanaholic! Join Date: Nov 2005 Location: Auburn/Birmingham AL Age: 41 Posts: 1,817 Trader Rating: (4) Rides Gallery: bigOdom1 Feedback Score: 4 reviews	autometer gauges aren't jdm so they are crap? how is it inaccurate when they are relied on more than any other gauges? think about it they are the most common brand when you see the muscle cars and other v8's they usually use autometer also. im just saying thats a pretty broad statement __________________ my car domain that good review thread

02-25-2008, 08:52 AM	#12
bigOdom1 Nissanaholic! Join Date: Nov 2005 Location: Auburn/Birmingham AL Age: 41 Posts: 1,817 Trader Rating: (4) Rides Gallery: bigOdom1 Feedback Score: 4 reviews	exactly, the autometer unit doesn't just happen to show what it should on five different gauges __________________ my car domain that good review thread

02-24-2008, 02:28 PM	#2
importdude Zilvia FREAK! Join Date: Nov 2006 Location: san j0 Posts: 1,391 Trader Rating: (19) Feedback Score: 19 reviews	ground to a good source metal" use a volt meter to check the ground source u want to be very close to 0.0 omh anything .3+ i would change orange should be illumation(lights) when i had a bad ground i had zero oil pressure too at idle and when i drove long periods of time, it would drop drop drop til it hit zero, and it wont be working until i stop/ restart the car fixed it with a better ground

02-24-2008, 05:14 PM	#3
undesiredshoe Zilvia Addict Join Date: Sep 2005 Location: Wisco Age: 36 Posts: 787 Trader Rating: (2) Feedback Score: 2 reviews	Why dont you type up the name of the company that makes the gauge in google and maybe they'll have instructions.

02-24-2008, 10:33 PM	#5
gotta240 Post Whore! Join Date: Dec 2005 Location: so cal Posts: 3,496 Trader Rating: (21) Feedback Score: 21 reviews	Is the factory oil pressure sender accurate and trusted?

02-25-2008, 08:30 AM	#7
gotta240 Post Whore! Join Date: Dec 2005 Location: so cal Posts: 3,496 Trader Rating: (21) Feedback Score: 21 reviews	So there is no point in adding an aftermarket electric oil pressure guage that connects to the factory sender.... correct?

02-25-2008, 08:35 AM	#9
McRussellPants Nissanaholic! Join Date: Oct 2005 Location: Austin, Tx Posts: 2,168 Trader Rating: (0) Feedback Score: 0 reviews	no point to using the stock sender. no point to using autometer. both are just as inaccurate, but when their powers combine maybe...

02-25-2008, 11:51 AM	#14
240trainee Post Whore! Join Date: Jun 2003 Location: Richmond, VA Age: 38 Posts: 3,861 Trader Rating: (1) Feedback Score: 1 reviews	Where are you guys installing the sensors? I was thinking I'll just replace the shitty stock one with the shitty gauge I just got, no need for the stock one really. now to find out thread pitches and how I'm gonna do it, lol. __________________ Team Pterodactyl SHARK ATTACK!!! LookoutDrift

02-25-2008, 02:57 PM	#15
lonelydrifter Zilvia Member Join Date: Sep 2006 Location: florida Age: 39 Posts: 270 Trader Rating: (0) Feedback Score: 0 reviews	I installed mine in the stock location. Had to use some different NPT to BSPT adapters though. Make sure your battery is all good. When my battery was starting to die both of my electronic gauges read horribly wrong. If your battery is good then you are getting bad ground or bad power.

02-25-2008, 04:00 PM	#16
240trainee Post Whore! Join Date: Jun 2003 Location: Richmond, VA Age: 38 Posts: 3,861 Trader Rating: (1) Feedback Score: 1 reviews	They are both 1/8" right, just different threads? friend of mine knows some folks at a machine shop or something, just have to tell him the right thing to pick up. I'm gonna get a tomei oil adapter block thing in the future, just need a solution for now. __________________ Team Pterodactyl SHARK ATTACK!!! LookoutDrift

02-25-2008, 07:12 PM	#17
gotta240 Post Whore! Join Date: Dec 2005 Location: so cal Posts: 3,496 Trader Rating: (21) Feedback Score: 21 reviews	Do all mechanical guages have a supper crappy, thin, hard white plastic tube that carries the oil to the guage, or is mine just extra crappy? I'm very nervous that the 1/8 tube could break or become punctured, causing a motor fatality... anyone else know what i'm talking about?

02-26-2008, 01:03 AM	#19
slider2828 Post Whore! Join Date: Oct 2004 Location: San Francisco, CA Posts: 6,040 Trader Rating: (13) Feedback Score: 13 reviews	Yes all mechanicals do have a thin tube. Get an autometer electronic for 50 or so dollars. Use an adapter from Nissport and is an adapter that tips to the stock sender location. Clean and easy and please tighten the hex caps on the sides when you buy and all products are CNC'ed. Nissport is awesome and no I don't work for them. __________________ Turn and Burn!