Could someone tell me where it's located, Im pretty sure it doesn't work any more, Since Its at 80 with out the engine turned on.
If the needle always resets back down to "0" when the truck is turned off and key is out but goes straight to "80" with the key in the "on" position and not started, then it is the oil pressure sending unit. Check back in a few after I search for it. Here you go, that was fast lol. Here are some real life pics of actual location and correct part s of different brands etc. I believe you can easily change it if you don't have a blower on top. I still haven't changed mine haha.
Don't want to remove blower. You can post now and register later. If you have an account, sign in now to post with your account. Paste as plain text instead. Surprisingly, even this is a fight. The front of the cover just lifts off of two retaining posts. However, the back of it gets hooked on the rear retaining clips, because it doesn't have enough clearance above. You'll have to stick your hand in there and push down on the rear retainer while lifting up on the back side of the engine cover.
The next step becomes to disconnect the electrical connector. They use a lock tab to hold it in place. You simply pull the white lock tab up and it will snap to release. Then you can depress the connector lock and wiggled it loose from the sensor.
As for replacing the sensor it screws in the rear portion of the engine block into an oil gallery. Here is a three minute video that sums up the replacement procedure quite nicely.
The main problem when replacing the Chevy engine oil pressure sensor is repeat failure. This goes back to the root cause of the issue. Sludge and debris finds its way inside of the old oil pressure switch.
This is when Chevy decided to install the filter screen for the model year. Now what happens is the screen becomes plugged with junk and engine oil never reaches the sensor. Therefore, people that just replace the part without replacing the screen find the repairs won't last long or don't work at all. This also leads to confusion that there is something else wrong with the automobile.
On older Chevy engines that don't have the screen repeat failure often comes from lack of engine maintenance. In some cases this is not the fault of the current owner, but the previous one. A lack of engine oil changes can cause sludge deposits to form. These can break loose and find their way into the input port of the replacement pressure sensor. If you have one make sure you replace the screen along with the switch.
You will need a small pick to fish it out of the oil gallery in the engine block. When you thread in the sensor it holds the new screen in place. With the low cost of the replacement part it doesn't seem like a good idea to clean the old screen. In the next section I'll talk briefly about other issues I've found when trying to cut corners on this repair. Whenever you have car parts that fail in large numbers the aftermarket steps up to make cheaper solutions.
They start mass-producing replacement parts and offering them at lower prices. Similar Content. Oil pressure sending unit. Hello, I'm new to this forum. I have a GMC Sierra with , miles. The 5. The oil pressure dropped and I replaced the oil pressure sending unit opsu and the problem was fixed for about a month. The old screen filter under the opsu was dirty but not severely clogged. After about a month the oil pressure dropped to 20 lbs and the check engine light came back on.
I am considering pulling the opsu back out , operating temperature, and squirting brake cleaner or something down the oil passage followed by 2 hot oil changes. My question is , 1: is this a good idea? When i bought the truck it had maybe psi cold dropping to 0 warm. Thought it may have been a pickup tube oring or oil pump so i went ahead and replaced the pickup tube, o ring, and pump.
Which is a lot better but still a problem. I am aware the bearings may be shot and need a total rebuild, that is not out of the options. It is not electrical or sensor based issue same psi with a mechanical gauge. However I need to replace my harmonic balancer and take off the timing cover again so i was looking at it and could it be as simple as a o camshaft retainer plate? Am I correct in thinking that this could solve my issues? Any input is helpful, thanks.
New to the forum here, and I have a chevy silverado with the 5. I drive to and from michigan from chicago for college every couple of weeks. The last time I drove up to michigan 2 hours into my drive the oil pressure gauge started slowly moving down from 40psi. Every 10 minutes it seemed it moved down a notch until it got to 15psi and then I pulled over just to investigate because the truck was running perfectly normal and no warning lights or anything were on. I did a walk around, no leaks, no engine noise and the oil level was in the same place as when I left.
Also when I stopped the pressure gauge dropped to 0 at idle and the truck idled normal. I continued to drive till i got to my destinations 30 minutes later. The next day when I started it back up the oil pressure is now reading normal and has read normal for the last week. I went to tech school and I know my way around an engine and i'm almost positive this isn't a mechanical issue, im thinking its the oil pressure sensor or sending unit or it could be the gauge itself because first gen silverados are famous for bad gauges but i feel if it was a bad sensor there would be warning lights?
Not sure though, any of you guys experience an issue like this or have any idea of what to check or what it could be?? Much appreciated!! Oil Pressure. Preface: 06 Sierra, lq9, k Currently showing 40psi at cold start and stays there until coolant reaches operating temp. Hot idle will usually sit around 32psi some times dip down to 25psi. Will not go over 65psi at WOT. It used to never be lower than 40psi at idle and would peg out to 80psi at WOT.
I changed the oil pressure sending unit hoping that was it, no change. I have not hooked up a mechanical gauge to check it. Looking for some thoughts. Is my gauge cluster just malfunctioning? Oil pump? Pickup tube o-ring? Engine trash? Let me know what you think.
I read once upon a time something about gm saying that the engine is only supposed to produce 10psi for every rpm. No registered users viewing this page. Newest Member jk Taylor Joined 5 minutes ago. Popular Forum Topics. Tire Pressure. Bad lifter production dates. Fuel Gauge Reading Zero after fuel pump replacement. She loud. Another oil thread. Week Month Year All Time. Grumpy Bear MikeBMW M1ck3y Alan Bowman Show More.
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