When i start the truck in the morning i get the (Low oil pressure turn off engine) signal. And i hear a ticking noise sound in the engine, hard to explain the sound exactly. The pressure will go up ounce i rev it up a bit, and start driving it around. At highway cruise speed, just right at 2000 rpm the oil pressure is right at 40 psi. And its fine all day after that, i start the truck probably 25 times a day and the only problem is in the morning or when the truck sits a while. Like 3 or 4 hours. I dont know if this has anything to do with it, but it just started doing this after i changed the oil. Possibly a bad filter? Truck has 215000 miles, bought it with 40000 miles, have changed the oil at 4 or 5 thousand miles since i have owned it. Wix filters. Whatch yall think is wrong?
Riflerack31
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I am having a similar problem with my 08 silverado 215K miles. About mid August my oil pressure dropped to 0 for the first time then popped right back up to normal. I thought this was weird and possibly related to the oil pressure sensor because I had replaced it early this year around January. At that time the oil pressure was 0 all the time, replacing the sensor fixed it. I did not replace the screen filter behind the oil pressure sensor though. Fast forward back to present...my oil pressure started fluctuating more frequently. The needle on the gauge would drop and go up, then go to 0 and stay there for several seconds to a minute, then come back up. It was so sporadic I couldn't tell if these were actual readings or a flakey connection. One time while I was parked the pressure went to 0 so i got out and wiggled the wire harness to see if the wiring was bad. That did not effect it. My gut told me there was no way the actual pressure was 0 or I would start to hear lifter ticking or even worse, but I do not want to blow my engine either.
So I started digging a little more and learned about the pick up tube o-ring issue. This sounded like the issue I was having, when i'm parked facing down hill it would never fail. This made sense because the oil runs to the front of the engine and the o-ring is submerged in the oil at this point. Last night I dropped the front axle and the oil pan, and replaced the o-ring. I took it for a test drive and thought it was fixed. The oil pressure was more responsive and never dipped below 30. Then today it went to 0 on me again and here I am looking for a solution. I attached the old and new o-ring photo for anyone to see who was interested.
I need to collect more data. I need to know what the actual oil pressure is when the gauge say 0. I am going to try to install a mechanical gauge somewhere on the block and compare it to the dash gauge next time it goes to 0. This will tell me if it is electrical or mechanical. If its electrical its not as critical but at least i will know it is not inside the engine.
So I started digging a little more and learned about the pick up tube o-ring issue. This sounded like the issue I was having, when i'm parked facing down hill it would never fail. This made sense because the oil runs to the front of the engine and the o-ring is submerged in the oil at this point. Last night I dropped the front axle and the oil pan, and replaced the o-ring. I took it for a test drive and thought it was fixed. The oil pressure was more responsive and never dipped below 30. Then today it went to 0 on me again and here I am looking for a solution. I attached the old and new o-ring photo for anyone to see who was interested.
I need to collect more data. I need to know what the actual oil pressure is when the gauge say 0. I am going to try to install a mechanical gauge somewhere on the block and compare it to the dash gauge next time it goes to 0. This will tell me if it is electrical or mechanical. If its electrical its not as critical but at least i will know it is not inside the engine.
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I didn't like that there was one bolt either. That's is a good idea.
I am trying to find a way to install a mechanical oil pressure gauge. I saw that there is a cover plate on the side of the oil pan above the oil filter. I believe I can tap into this but I'm not sure what is underneath this cover. Fires anyone have any idea or know out another easy way to install an oil pressure gauge?
I was planning on using the $28 harbor freight gauge, just not sure where to tap into.
I am trying to find a way to install a mechanical oil pressure gauge. I saw that there is a cover plate on the side of the oil pan above the oil filter. I believe I can tap into this but I'm not sure what is underneath this cover. Fires anyone have any idea or know out another easy way to install an oil pressure gauge?
I was planning on using the $28 harbor freight gauge, just not sure where to tap into.
I bought an adapter plate off amazon with a 1/4" NPT hole drilled in it for about $14. It bolts to the oil cooler ports on the side of the oil pan directly above the oil filter. I went to harbor freight and bought their oil pressure test kit which came with a gauge, 66" hose and all the fittings i needed to mount it to the adapter plate. It cost about $28 but I had 20% off coupon. I ran the hose up inside the engine bay on the driver side where there is a blank spot for a second battery and zip tied it down so the hose is not flopping around or getting too close to the exhaust. With the gauge installed i drove around until my oil pressure went to 0 and got out to read the oil pressure gauge. I still had oil pressure. This tole me that it was something electrical with the pressure sensor or harness etc. The easiest thing to do was change the oil pressure sensor which I had already change In February because it failed hard over. Well when i wen to remove it I broke the connector off the body and I think I found the problem. It looked like there was barely any solder between the connector and the PWB inside the sensor. The engine heat was probably causing an intermittent connection causing the oil pressure reading to fluctuate. I went to the junk yard and pulled 4 sensors and tried a new one and so far it has been working fine. It is pretty sad that i spent $40 on a brand new AC Delco part and only got 6 months out of it. I hope this is the last of the oil pressure saga. I didn't think i would have to replace the sensor twice but I did, so maybe if you are having trouble with your oil pressure this will help you. You might have a faulty sensor even though you might have just replaced it.
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Haha...Sorry in advance.FoxProDenali said:You just jinxed a bunch of us, brah!!JBuffum21 said:
I just don't understand how these pumps fail. The gerotor style pump should not wear much at all, especially with a cavity full of oil for lubrication all around it.
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