Mazda 8oy

I noticed today that my oil pressure was sitting over 110 psi. What could cause this, we just put a clutch in and it wasn't liek that before I put the clutch in. Wondering if I left out a ground. Broke something! Any Ideas?

Cosmo Donk

Is it always that high or does it fluctuate? What was it before?

Mazda 8oy

It worked perfectly before, just hang around 30 psi on normal driving I beileve. Now if i turn the car off, it like goes past the bottom line, when i turn the car on w/o engine running it shoots all the way past the top line, and stays there until i take key out of ignition.

any ideas

mazdaverx713b

iTrader: (91)

kinda sounds like an electrical problem. perhaps it is grounding itself out when power is applied to it. it also could be that the gague is bad and just doesnt want to function. at first i was thinking it may be a bad oil pressure relief valve.

2GSLSE

iTrader: (6)

It sounds like you pinched the sending units wire in between the engine and transmission when you put it back together

Mazda 8oy

hmmm, so if I get it out everything should be good to go?

nvdrx

hey dudes,

30psi when driving normal is low psi.. if ur sitting around 2500 - 3500 rpm, it should read at least 50 psi..

Cosmo Donk

The stock gauge is notorious for being crappy so he should get a real gauge and then find out what he is running at

GUITARJUNKIE28

stock oil pressure gauge is fine.
it's the sending unit that jacks up.

it's the stock coolant temp gauge that sucks

BoostorLose

Minimum ooil pressure should be 10 psi per 1000 rpm. Maybe check the oil pressure sending unit?

Tom93R1

iTrader: (2)

I noticed the one time I ran a FRAM oil filter it gave me crazy high oil pressure, I am talking 60 or so at idle and pegged if I got on it. Now I stick to Purolater or the Mazda OEM and get about 10-15 idle and 100-110 high rpm.

AsburyD

2GSLSE has the right idea, your gauge sounds like it's doing what it's sopposed to be doing.Your wire is either pinched ,shorted, broken or just came off, or it could be just a coincident that the oil sender chose this time to go out. By the way 30 lbs is low under normal driving (say freeway speed) 60-70 lbs is normal.

AsburyD

the eaziest way to check is to turn the ign. on observe the needle position go out and unplug the wire from the sender, then check gauge, if the needle sweeps down or up then your wire is OK and your gauge is probably good as well. I'd replace the sender, if the needle stays then trace the wire back as far as you can looking for a short. Once you get get your gauge fixed, if you still show low pressure it could be a sign that the sender was going out, I'd put a mechanical pressure gauge on just to make sure that your oil press. is where it should be. You could this while you have your sender out , you don't to overlook a possible mechanical problem.
hope this helps.

mazdaverx713b

iTrader: (91)

how is your situation coming? figure anything out yet?