Hey guys, i have a '87 n/a w/ RB downpipe and pre-silencer. I'm having normal oil pressure at idle (30psi) but when i get on the car a little, the oil pressure goes way up, like 80 at least. whats that about ?

 

Higher rpm's means the pump is spinning faster, so more oil pressure. Normal

 

Could also be the gauge. The senders wear out and give false readings...

 

I have an aftermarket gauge and I read 35-40 at idle, and almost 90 above 1500 RPM.

 

Ok, i just didn't think it was supposed to hit 80psi or much higher. thanks. and here's a totally off topic question...

Can you use a pressure washer @ the car wash to blast out funk/hair from the front of a radiator ? (popping the hood and spraying through the rad away from the car) just don't want to bend any fins or anything.

 

after driving yesterday for an hour or so, i still think my oil pressure is too high. It's over 60psi and almost maxed out on the gauge when i'm @ anything higher that 2000rpm's. Correct me if i'm wrong but, isn't 80-100psi too high for such low RPM's ?

 

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I've had mine give funky readings. It went to ~100 one day and didn't the next. Nothing changed internally in my engine between that time.

 

I dont go above 60 while im cruising. i usually idle at about 28-30 i think.

 

Maybe the engine has been rebuilt and the builder for some reason put the higher pressure oil regulator in? Or maybe just a simple oil sender issue. But yeah for normal 80-100 is high. I read ~30 idle and 60 anything over 2,500rpm like most people here.

 

<= 30 at idle, ~60 at cruise, right between 60 and 110 at WOT. 86 n/a

 

87 TII with a fresh rebuilt and a 1200 rpm idle, my autometer gauge reads 60-66 psi and hits 95+ at 4000 rpm

 

91 Turbo - I get around 30 at idle, 60ish cruising, 80+ when pushing it. As far as the radiator cleaning idea... low pressure I guess? Don't think I've ever seen any posts about it or ever mentioned.

 

Yea, it could be the gauge or sender but, when idling i'm right at 30psi, once i get any higher than that the pressure rises real fast & stay there. What problems could this cause ?

 

im going to get flamed for this....

look around the starter/transmission for a dangling connector. (little black box with a spade connecter). its a capaciter for the oil sender. its supposed to help keep the needle from bouncing around i think or its a fail safe that keeps the guage working longer.

 

should have mentioned what to do if you find it...

bolt it to anywhere on the body or engine like a ground. its supposed to bolt under the coilpack by the clutch/brake tanks.

 

well, that explains that, the thing is just hanging around..literally, i'll bolt it up now.

Ok b

 

Well, that one capacitor was already mounted under the coil where it should be, the one i'm speaking of is identical to that one but it's hanging right behind/under the oil filter. it's exactly the same as the other, little black capacitor box w/ a eyelet for a bolt. i bolted it to the fire wall but, nothing has changed yet that i can see.hmmm