this is my oil pressure on my s5 NA. this was at about 3400 rpm on the freeway.

at idle it should be at 30psi which it is, and at 3000 rpm and higher its suppose to be at 60psi. it worked fine on previous motor. how low can the oil pressure be before it starts messing things up? the motor has been running like this for about 2,000 miles and no problems thus far.

should i worry? or is it just being a stoopid gauge?

 

Install a mechanical oil pressure gauge thru the rear banjo bolt for a "second opinion."

 

yea im gonna try using an aftermarket gauge

thanks.

but i wonder y it reads like that??

who else has same problem?

 

go aftermarket like I did, but its an electrical one.

 

That's where my oil pressure is when crusing. At idle it's a little bellow 30.

 

I don't see anything wrong with that oil pressure. I don't recall the facotory spec (check the factory service manual as found in the FAQ) but that looks to be within the acceptable range.

That said, verify your pressure with a proper aftermarket gauge before you rely on the factory gauge. The senders have been known to give false readings...

 

If your referring to my pic and where my gauge is in that pic dont worry my car wasnt even running when that pic was taken. But when the car is running my aftermarket gauge reads anywhere from 30 at idle to 40-45 at 3400 rpms.

 

with my 89 TII i get like any where from 25 to 35 at idel depending on how ive been driving and at like 3000 rpm i get 68 lbs if that helps at all

 

No, I was referring to the posters picture.

 

i belive the service manual says 64psi or above at 3000rpm

 

thanks guys im gonna install an aftermarket gauge.

i dont really wanna install a mechanical one, i dont want a line of hot oil inside my cabin

im gonna get an electrical one.

does anyone know who makes those gauge holders that go under the CD player?

 

My Oil Pressure gauge is practically dead... can anyone help me figure out how to make the needle move? It wont sense the amount of pressure... is it a sensor?? is it the gauge itself? I really dont know... thanks.

 

make sure the cable is connected, its under the oil filter if im right mine's an s4 though

 

mine does that too, its sorta normal

 

what is too high for oil pressure? Mine is about 30 at idle and at 3000rpm it's 70ish? (stock gauge)

 

That's fine. So is the original poster's picture.

 

thanks aaron

im still gonna install a mechanical gauge and post results to see where my oil pressure is REALLY at.

 

you sure you wanta mechanical gauge, I did research befroe I got my OP gauge. The electrical ones are more reliable and easier to install. BTW I would stay at the electrcal concept, like OEM gauge is. Dont like the idea of oil going into my car, what happens if something goes wrong.............you have a puddle of oil inside............yuck!! but whatever you want its your car.

 

yea i thought about the oil line going inside the car. i dont want that either, but mechanical has to be more accurate, electrical might fail on me again.

and electrical is so expensive

i want an autometer gauge

 

I paid 50 bucks for my electrical gauge, its an autometer(oops autotechnic) S7 series got it from here http://www.hyperformanceauto.com/AC-...e-P4240C0.aspx

 

does that come with the sender too?

 

I'm looking into the GlowShift gauges, i like how they look and i've heard good things about them.

 

yea...both gauges came with the senders. OP came with OP sender and my Water temp one came with the sender too. Both senders are 1/8 thread though.......so for now im using my stock senders.

 

Stock specs should be 30 at idle, 80 at speed. If your pressure ever gets below 30 at 3krpm 'Immediately consult your mazda dealer for assistance'.

Mine sits around 30lbs at idle, maybe just a taaaad under it or over. And when cruising it's around 90lbs. Problem is, my gauge recently started acting up, so it fluctuates like a crazy bastard. I'll be cruising at 80mph with 0lbs, then it'll shoot to 20, down to like 1 (hehe) and all the way to 110, down to 0...it's kinda funny, but scary. I think the gauge and/or the sending unit finally decided to take a crap.

 

^ that sounds like ur little resistor box might be unplugged or the wire is about to break.

check the little back box with a single wire, it should be bolted to your tranny with the clutch slave cylinder.

it is a little black box with one wire that plugs into the harness that goes to the battery and starter.

you need this plugged in otherwise your gauge will burn out and not work at all.