Toyota MR2 Message Board - View Single Post - 4A-GE MK1 Engine low oil pressue

briansexsmith · 09-29-2008, 01:40 PM

Info;

1988 mr2 SC
120000 km or 70000miles
almost stock
4500km since last oil change
running redline 10w-40
10 deg C or 55 deg F

I was driving this morning at highway speeds had the cruse control set and the oil pressure dropped down to the big "L" on the gauge I turned the engine as soon as I could and got on the shoulder it was somewhat flat and checked the oil on the stick It looked good as I topped it up after autocrossing the day before.

the next exit was not far so I decided to drive it off the highway it was a bit of a uphill and while driving the pressure came back. I exited the highway and found a place to stop thru all of this the pressure was lower then normal but there.

I decided to add more oil to the engine as the going up hill seemed to help I added 1/2 liter and started it up again and the pressure was normal at idle and went beyond the first mark after a blip of the gas. (so now it is overfilled by 1/2 liter)

i drove away watching the gauge and it never fell again on the trip that was another hour.

at lunch I went out to the now cold car and checked the oil stick it it was overfilled and started the engine and the oil pressure came right up and drove away everything was OK

so what do you think happened? any ideas would be great

thanks in advanced
Brian Sexsmith

09-29-2008, 01:40 PM	#1 (permalink)
briansexsmith No Skills Join Date: Jun 2008 Posts: 5 Thanks: 0 Thanked 1 Time in 1 Post iTrader Rating: (0/0% )	low oil pressue Info; 1988 mr2 SC 120000 km or 70000miles almost stock 4500km since last oil change running redline 10w-40 10 deg C or 55 deg F I was driving this morning at highway speeds had the cruse control set and the oil pressure dropped down to the big "L" on the gauge I turned the engine as soon as I could and got on the shoulder it was somewhat flat and checked the oil on the stick It looked good as I topped it up after autocrossing the day before. the next exit was not far so I decided to drive it off the highway it was a bit of a uphill and while driving the pressure came back. I exited the highway and found a place to stop thru all of this the pressure was lower then normal but there. I decided to add more oil to the engine as the going up hill seemed to help I added 1/2 liter and started it up again and the pressure was normal at idle and went beyond the first mark after a blip of the gas. (so now it is overfilled by 1/2 liter) i drove away watching the gauge and it never fell again on the trip that was another hour. at lunch I went out to the now cold car and checked the oil stick it it was overfilled and started the engine and the oil pressure came right up and drove away everything was OK so what do you think happened? any ideas would be great thanks in advanced Brian Sexsmith