Just installed oil filter relocation kit and remote mounted oil

[kevboost7]

I just finished a intake plenum removal and installation and while I was at it, I installed a remote mounted oil sender unit from RHDautodesigns and a greddy oil filter relocation. 
 

after I put everything back, I started up the car and noticed that I wasn’t getting any oil pressure. The needle didn’t move at all. 
 

the car was running for a solid 2-3 minutes at idle before I noticed this. Engine still ran smooth though. 
 

I’m not sure how to diagnose or fix this issue. Anyone got suggestions for me?

[GTSBoy]

So, either you ballsed up the install and actually have no oil pressure.....and have almost certainly trashed the bottom end, or.... You have ballsed up the install of just the oil pressure sensor.

[Duncan]

Agreed, and most likely just a gauge issue if it is not knocking after 2 minutes.

More information or pics needed about what you have plumbed where....

[kevboost7]

Alright thanks guys, i was losing sleep over this. But i was thinking about it and when i started the car up, i forgot to tighten one of the auxiliary screws on the greddy oil filter relocation kit and oil was squirting out of it, so that means i do have pressure...

I drew an arrow on the screws that i forgot to tighten

 

And this is the remote mounted oil sender unit. In the photo i didn't have the wire plugged in, but i drew an arrow to where its not plugged in to the wire down at the bottom. There is a connector down there was a rubber boot on it. 

How do i diagnose the gauge? Should i try to put the old sender unit on and see if the new one was just faulty? 

[Butters]

Is the new oil pressure sensor the same type ?

[GTSBoy]

Well, you could see if there is pressure at the pressure sender tapping point by not having anything connected there and see how much oil comes out as you crank it. After that, then yes, start to look at providing pressure to the sender by other means, to see if it can sense any pressure at all, and/or connect some other oil pressure measuring device at the same spot (ie your old one) and see what it says.

I have to be frank - these problems usually turn out to be user error. It is hard to guide troubleshooting for things that are so completely random as user error. It's not like we're troubleshooting known, common failure modes of the stock equipment. You have to examine what you've done very closely, take it apart (physically and mentally) and see what ball bearings (real or metaphorical) fall out.

[kevboost7]

3 hours ago, Butters said:

Is the new oil pressure sensor the same type ?

im not sure, its the one i got from RHDautodesigns

https://www.rhdautodesign.com/product-page/nissan-skyline-r32-33-34-remote-mount-oil-pressure-sending-unit-kit

[kevboost7]

3 hours ago, GTSBoy said:

Well, you could see if there is pressure at the pressure sender tapping point by not having anything connected there and see how much oil comes out as you crank it. After that, then yes, start to look at providing pressure to the sender by other means, to see if it can sense any pressure at all, and/or connect some other oil pressure measuring device at the same spot (ie your old one) and see what it says.

I have to be frank - these problems usually turn out to be user error. It is hard to guide troubleshooting for things that are so completely random as user error. It's not like we're troubleshooting known, common failure modes of the stock equipment. You have to examine what you've done very closely, take it apart (physically and mentally) and see what ball bearings (real or metaphorical) fall out.

yeah that makes sense. I think i just gotta dig into it then, cause theres really no way of you guys knowing what i did wrong. I kinda jumped on here cause none of my friends know about RB's so im treating it as if you guys were my buddies so i wont freak out haha

[kevboost7]

I have a question about the OEM oil pressure gauge. I'm assuming it's an electronic oil pressure gauge? 

If i were to install an aftermarket electronic guage by using one of the outlets on the Greddy Oil Filter Relocation device, would i have to install another oil pressure sender unit on it? 

 

[kevboost7]

Hi guys, thanks for your help, but i think i got it sorted out. I'm going to buy a Haltech Can gauge. Install a oil pressure sensor to the greddy relocation kit, then wire it to my haltech ECU, and use the haltech can gauge as the display.

 

[GTSBoy]

5 hours ago, kevboost7 said:

would i have to install another oil pressure sender unit on it? 

Senders and gauges are usually "matched" in that there is a relationship between the sensed oil pressure and the voltage or resistance that is the output of the sender. If the gauge doesn't match that range, then it will read wrong. And obviously enough there's no standard for those ranges. A random selection of gauge and sender might work, but you would be made to trust it unless you absolutely knew that they were the same calibration.

4 hours ago, kevboost7 said:

Hi guys, thanks for your help, but i think i got it sorted out. I'm going to buy a Haltech Can gauge. Install a oil pressure sensor to the greddy relocation kit, then wire it to my haltech ECU, and use the haltech can gauge as the display.

Solid idea. Hard to see why you didn't go there first!

[Murray_Calavera]

7 hours ago, kevboost7 said:

Hi guys, thanks for your help, but i think i got it sorted out. I'm going to buy a Haltech Can gauge. Install a oil pressure sensor to the greddy relocation kit, then wire it to my haltech ECU, and use the haltech can gauge as the display.

 

Please please please strongly consider picking up an IC7 dash rather then using the old school CAN gauge. That CAN gauge is not cheap and is very limited in it's display. The dash can display/output so much more plus it is sexy, makes coffee and cures cancer. I'm sure it also has other superpowers I haven't discovered yet. 

[kevboost7]

53 minutes ago, Murray_Calavera said:

Please please please strongly consider picking up an IC7 dash rather then using the old school CAN gauge. That CAN gauge is not cheap and is very limited in it's display. The dash can display/output so much more plus it is sexy, makes coffee and cures cancer. I'm sure it also has other superpowers I haven't discovered yet. 

Thanks for convincing me, i was actually looking at that and noticed the price wasjn't that much greater than the CAN gauge. I might go that route instead.

[kevboost7]

Hey guys i need your help again. So today when i got home from work to diagnose this oil pressure sender unit, i connected a mechanical pressure gauge and got amazing oil pressure, which was good news because that means my engine is good. 

So i decided to put my hood back on (i removed the hood when i did the intake plenum job) and drive it. But when i got in to crank the engine, i lost electricity and that's when i noticed that the hood touches the battery terminals causing it to short out. After i made some adjustments to the battery location, the OEM oil pressure gauge started working again!! There is this big red connector thats an attachment on the positive battery terminal cable, does that have something to do with the gauges?

 

EDIT: Nevermind, i am an idiot, i had the battery terminals facing the headlights, but i looked up a photo of how it was before and the terminals should be facing the other way towards the firewall. 

Edited October 11, 2022 by kevboost7

[GTSBoy]

Please tell me that you had red to red and black to black the whole time!!!

[r32-25t]

Wow 

[kevboost7]

i had the terminals on the correct positive and negative 🤣 cmon guys, im not that stupid haha

I just had the terminals where i drew the orange circles and arrows, rather than being closer to the inside

[GTSBoy]

Yuh, reason I asked is that most times, the battery leads are not long enough to allow that to be done, but might just work if you're happy to reverse polarity!

[Tom24GR]

Hey. I tried to find that kit to install on my R32 But the website seems to be down. Do you know if there are any other places to buy it or some other company that makes that kit? Or somehow kind of make my own?