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Got a problem!!!, so I'm not driving it right now. A few weeks ago I got in it to go somewhere and when I started it up I only had about 20 psi of oil pressure on a cold engine so it's been sitting for the past few weeks until the weather warms up enough to get out and try to figure out what the problem is. Hopefully it's something simple like the tube going to the gauge just being stopped up or a bad gauge, but until I can check it out I'm not taking any chances on ruining the engine. The oil pressure dropped all at once during extremely cold weather so I'm thinking it may be the oil pressure was so high from cold oil that the pressure relief valve opened and stuck open. The first things on my list to check are putting a new oil filter on in case it's plugged or damaged inside and checking the oil pressure line for restrictions. If neither of these is the problem I'm going to have to remove the oil pan and check the relief valve and screen in the oil pump to make sure it's not plugged with something that may have loosened up in the engine and stopping the flow of oil. If it's none of these things I'll probably put a new oil pump on it, I figure there's a good chance it may just be worn out (the oil pump not the car) with 514K miles on it. If anyone has any other suggestions on things to check please either list them in this thread or send me a PM.
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