Rb20 Oil Pressure Sits Near 0

[70shw]

Hey guys, I have a r32 gts4 with a rb20 in it.

I noticed the other day while sitting in traffic That the oil pressure had gone right down to the top of the "0" mark, it only does it when im sitting in traffic or going slow around town but when it's cold it's fine the pressure sits around 6, once warmed up or on the high way it sits around 4 but as soon as I get into town it drops down. Please explain what and why it's doing this, and how do I fix it?

P.s I only have the shit stock oil pressure gauge at the moment

[Hanaldo]

If your oil levels are ok, I'd put it down to the gauge. My mates 32 did the exact same thing, was just the gauge.

[70shw]

Could it just be because it may be old oil? And getting to hot and thinning out to much? I only bought the car 2 weeks ago:/ and haven't had a chance to do an oil change. Thanks

[10 4]

I'd say gauge also, but never hurts to do an oil change, especially when its unknown.

[Hanaldo]

It is possible, check your dip-stick. As James said, best to be getting the oil changed if it is unknown. But the fact you said it sits around 4 bar while driving makes me think the viscosity hasnt dropped that far yet.

[Humbla]

My r33 has done the same for ten years,nissan gauges seem to croak like this.But all i have to sook about is this,top moter the rb is.

[RIPae86]

Check the workshop manual, at idle i think its suppose to sit between 1 and 2 bar.

I had the same problem and I had it tested on service, it was faulty sender.

Best get an oil pressure test or quality aftermarket gauge to end your worries.

[phat_man]

It's usually a faulty gauge as others have said, but also make sure your regularly checking your dip stick, you can be surprised some times.

[blue_vl_t]

just to back all this up, the gauge in my r32 gtr sits almost on zero in the same situation as you mentioned, but works ok on the highway etc.

[paulr33]

if oil pressure was zero the idiot light would be on (assuming it works)

[T-Rex]

My 32 GTR was doing this, I put in a different cluster and it still did the same. I put it down to a faulty oil pressure sender unit.

[s213b]

Get an aftermarket pressure gauge now.

Do an oil flush with good oil no cheap shit.

If u still have problems, get the oil pump checked, my rb20 gts4 did the EXACT same thing (only just bought it) and I thought it was dodgy gauge, till light came on and I knew I was f**ked. Now I'm up for a rebuild.