Thread: Low Oil Pressure Message

At what pressure does the low oil pressure warning come on? Today, as i pulled into the parking spot at work the warning came on, shut the car off immediately. Checked the oil level and it was fine, actually a little over full. Let the car sit for 14 hours and then took a big chance to get the car home. Got all the way home, and again, pulling into the driveway got a Low Oil Pressure warning. Shut the car off immediately.

I'm going to ride my bicycle to work for the next couple of days until I get this sorted. Could being over filled cause a low pressure warning due to oil frothing? Since I can't remove the drain plug, I plan to pick up a hand held vacuum pump from HF and pump out thru the dipstick tube and fill with the correct amount.

Thoughts?

Thanks,

matt

I'm not sure what PSI the light is set to come on at but if your lights on you need to get a gauge and hook it up to your engine to see what you've got. It could just be a faulty oil psi sensor. Hopefully it is cuz otherwise you've got a lot of different things it could be.

I doubt the frothing would cause the low PSI but I wouldn't 100% rule it out. Depends on how much over it is and if you JUST changed the oil on it and overfilled it then that could be it.

If its not frothing or a faulty sensor then it could be a worn out oil pump, worn main crank bearings, something faulty with your oil pressure bypass/relief valve, a bad gasket in the oil pump circuit ect.

I'm assuming the car your talking about is the 04 GTP in your sig. How many miles are on it and how you drive it may help narrow down what it is.

From what I have read the light comes on at ~4 psi... Hope the damage hasn't already been done.

you can rent a test gauge, it just screws into the same location as the stock sensor.

How much over the full line was ur oil

Originally Posted by orange57

I have only put about 60 miles on the car. I drive pretty easy. I had the front main blow out causing a low oil preesure warning sunday. Had to walk a mile to auto zone to get oil and the drove it home, fix the seal and no more leak. I drive pretty easy for the most part.

Car has 111k on it. Is there anywhere other than the switch to tap in a real gauge?

Thanks
Matt

If you can find a T-fitting you can remove the stock sending unit and put the T-fitting in there and then put the sending unit on one side of the T-fitting and the real gauge on the other side. I do this on all my vehicles that I have put a real gauge on so that way if I am not watching the gauge I still have the idiot light on the dash.

If your just gonna put the gauge on it and then take it off after testing there is no reason to go thru all that work tho.

Follow up: I tore down into the engine block, and the connecting rods had atleast 1/4 wiggle room on 5 our of 6 Bearings. Very bad. Second Bottom End that blew out. I put another low milege bottom end in there, im thinking it is finally time to take a new block to a machine shop and have the crank;+ Properly balanced.

the idea is to avoid the machine shop all together. why you just drop a used engine in. if the new used one now has a vibration your flex plate my be off its mark and is now making the engine off balance.

you replaced the bottom end with no machine shop is what your saying?

may as well toss it in the trash if so. cause its a 200 mile engine now.

if you have it sent to a shop the cost out weighs the zero gains. your talking a couple grand when done, if not more....stock bottom ends do just fine up to 500 hp. i dont think you have that much going on yet. do you?

Stock bottom end handles more then 500. ZZP made 800+ on a stock bottom.

how about you tell us what your plans are for this car you beat the living crap out of daily? how are you not looking for a trans yet?

and what you've done to this bottom end. cause if the crank came out it "needs" to go to a machine shop or it wont last long with your beatings for more then 50 miles. this is not a small block Chevy engine where you slap new bearing in it and carry on. if you think this, your in for one rude awakening for sure.

you would be lucky, cause you unbolt the crank and the block will twist. why it should be align honed. if you skip this part its pretty much a dead engine in 200 miles.

we seen it happen more then a few times here.