: Oil Pressure Problem (yeah another one...)

05-10-07, 10:53 AM
After replacing the engine in my 93 STS (with a lower mileage used one), I've got a "no oil pressure problem". Not just the "Stop Engine" message, but noisy also. I tried the overfill method for trying to unstick the check valve, and it seemed to work - until the excess oil was drained (didn't have the paper in front of me, so only drained the excess, not all of it). When I restarted with the correct amount, no pressure and a noisy engine again. What's next? Try it again? Any certain amount of time to let it run or number of revs to give it? My mechanic thinks there may be a problem with the pan pickup (that might be checked soon). Any other ideas?

05-10-07, 06:28 PM
Did you have the replacement engine apart or install it as it came?

05-10-07, 10:48 PM
Not the bottom, just the top (intake, injectors - long story). I'll try the overfill tomorrow afternoon again. The mechanic did notice a couple of the oil pan screws were missing, which is why he thinks there may be something amiss with the pickup.

05-11-07, 01:16 PM
Update: He was right - the oil pickup tube was missing it's only screw...