Truck Model. GMC Sierra Classic 1500. Engine Size. 350 tbi. Hi Everyone. I have an issue with my 1987 GMC pickup. I changed out the motor to a ZZ6 crate motor. I am using the factory oil pressure guage which reads up to 60 psi. It is overloading the guage as the the ZZ6 puts out 60 psi at idle according to a manual guage we put on to check.If this occurred in an L99 much of it has to do with the active fuel management. The VLOM that controls the oil spraying into the cylinders that shut down can cause oil to not flow as it would. The LS3s don't have it however as you noted there is a screen under the oil pressure sensor that often gets clogged more often on the L99.I understand the sensors are most likely different as the S10 is a 4Cyl and my Silverado is the 5.3L V8. ... Initially after starting engine, the oil pressure gauge stays at 40psi or just under. Even once engine has reached operating temperature the gauge doesn't move until after driving for at least 5 minutes. Then the gauge starts reading ...Oil pressure gauge stops working. There are several reasons why the gauge will stop working. It could be that the gauge is faulty, you need an oil change, or the associated fuse is blown (electrical gauge). The best thing to do is that should ask your mechanic to check the oil level first. If the oil level is low, then you need to top up.Assuming it dropped to 25psi while stopped or off the throttle. IT is running between 25 and 30 psi at cruise speeds and about 20 psi at idle. It runs about 40 when cold. I have changed The pressure sensor and screen, that help little if any. tomorrowI am changing the oil, we'll see what that will do.I have a 2010 Silverado 4x4, started having low oil pressure problems. Changed the sensor after making sure there was plenty of oil. Problem went away. Few months later had the problem again, along with a misfire on #4. Ended up having a collapsed lifter which also damaged the cam shaft.The only time I can get it to go above 35 psi now is if I push the engine hard, like around 2500-3000 RPM. But at normal cruising speed around 60 mph, 6th gear, (with the 3.42 ratio) it's around 30 psi. I'm due for an oil change in another 1,000 miles so I may top it off, get the oil changed, and see if it happens again.Here is a more detailed list of the reasons why your car temperature gauge goes up and down: 1. Bad Thermostat. The thermostat is used to regulate the temperature of the coolant. If it starts to fail, it can act erratically, causing the gauge to jump up and down. Once it goes bad, it will no longer act this way.I have a 03 Silverado 2500HD with the 6.0L gas motor and my oil pressure gauge fluctuating while I am driving on the flat free way in overdrive and not chang...A manual gauge will have a 1/4" copper tube or plastic tube from the engine to the gauge. I would look at the oil pressure gauge and see if it is a 60 or 80 psi gauge. IIRC, the non-labeled gauges are 80 psi gauges. Buy a new sender, due to its age it's probably failing, for the gauge; either 60 or 80 psi.Checked the oil levels one more time (fine). Removed the oil filter and put on adapter & gauge. Ran the truck. The truck's Oil Pressure gauge resumed the same behavior, except now it is more likely to drop to zero reading and remain whereas before it fluctuated 5-40. The manual gauge showed normal readings ~40psi with increases with RPM.Measurable and Quantifiable Data on Engine Oil Pressure Gauge Fluctuation. Normal Fluctuation Range: A fluctuation of 2 psi over a 4-hour ride is considered normal for rear tires with 49 psi, while 42 psi for front tires remains constant. Cold Start vs. Warm Idling: At a cold start, oil pressure can reach around 60 psi, while idling warm, it ...They convey the status of various systems like your engine, transmission, and electrical system at a glance. Some common gauges found on a dashboard are the speedometer, fuel gauge, engine temperature, battery voltage, and tachometer. The speedometer measures how fast your car is going, while the fuel gauge displays the remaining fuel in the tank.The needle is supposed to move, on Fords the needle stays at one pressure setting but on Chevy's the needle will fluctuate. As long as it isn't like flying from 20psi to 60psi or some outrageous number you are fine. The needle will move. It is normal. 1999 Silverado 1500 LT LQ4.Some technicians may find DTC P0521 (Engine Oil Pressure Sensor Performance) active or stored in history in the Engine Control Module (ECM). Cause. This condition may be caused by a sticking oil pressure relief valve within the oil pump assembly. ⇒ If vehicle was built after the breakpoint date, follow service information for the condition noted.92 posts · Joined 2006. #1 · Sep 16, 2011. Hey guys, I noticed today on my way to work that my oil gauge needle bouncing at idle. As soon as I hit the gas and the …17 posts · Joined 2022. #1 · Dec 17, 2023. Oil Pressure Gauge Video. Click for video above. This has been happening for about a month. It first started by just going down when I accelerated then when reaching cruising speed would settle at 40 or just below. Now it's fluctuating while idling in park. Thank you in advance.I have been seeing some weird oil pressure gauge fluctuations lately. Recently I changed the oil pressure sensor at the back of the block by the camshaft sensor. Before I was getting 40 -70 psi and now I am getting 35-55 PSI and the pressure is going up and down 10 or so PSI when rpms are held steady at say 2000 rpm.Jul 17, 2014 · My question is what is Normal oil pressure I have the 4.8 motor when motor is at normal operating temp ( 210 ) and while sitting at a light my pressure drops to between 25 28 pounds IS THIS NORMAL . While driving at 40 MPH the pressure is 40 pounds is this normal at 65 MPH it is around 44. I run 5-30 oil (Castrol ) Synthetic with a AC oil ...So normally my oil pressure would sit at 60 psi but its recently been having issues so at idle it completely drops to 0 psi it did however once sit at 30 psi when i was parked at home. Its also a gradual drop so its not an immediate drop to 0 psi but it does drop. As soon as I hit the gas it jumps back up but never at 60 psi more like 50 psi.Also, while the engine is running, the gauge reads between 27 to 68 PSI. In general, Ford F150 oil pressure gauge fluctuation happens due to a drop in oil level, clogged oil filter, poor quality gauge, and temperature variation. Furthermore, it fluctuates continuously due to faulty sender, broken crankshaft, and loosening of wire connector.welaish. 508 posts · Joined 2013. #20 · Jan 21, 2017. The oil pressure is linear formula with rpm. You should get 10 psi with every 1000 rpm. I have innovate motorsport gauge as well and I dont have any flactuating at all only 1-3 psi. I am getting the measurement from the rear oil galery under the intercooler.I have noticed that no matter what oil you use, after about 3000 miles, the oil tends to break down enough that you'll start to see a drop in oil pressure, but it shouldn't drop more than about 5 psi over the course of the oil change from what I've seen. 2013 Silverado 1500 LT Crew Cab 4X4. Silver Ice Exterior.Ron Z., - Chevy Tech -. Category: Chevy. Satisfied Customers: 26,828. Experience: 18+yrs experience. State Inspector and Chevy Diagnostics. Verified. This sounds like you have a faulty Oil Pressure Sensor. It's located at the rear, driver's side of the engine. You will need a special socket to remove it.First step would be to see if the sensor is working or not. It is unlikely that the pressure is actually 110 PSI, so safe to assume that something is not working, but it could be several things other than the sensor itself. That said, the idea of a mechanical gauge just for peace of mind is not a bad suggestion.I have noticed that no matter what oil you use, after about 3000 miles, the oil tends to break down enough that you'll start to see a drop in oil pressure, but it shouldn't drop more than about 5 psi over the course of the oil change from what I've seen. 2013 Silverado 1500 LT Crew Cab 4X4. Silver Ice Exterior.Apr 21, 2019. #1. Own a 2002 Chevy Silverado with 380k miles on the original engine. For a few months now I've been noticing the oil pressure gauge needle bouncing around. This morning the dash light "Check Engine Oil Pressure" came on and noticed that the oil pressure gauge needle was at Zero while at a Stop sign.Reasons For Low Oil Pressure At Idle. There's usually a mechanical malfunction causing the low oil pressure, whether it is due to a lack of oil, poor quality, or the wrong viscosity. It can also be caused by a bad oil pump, filter, sensor or gauge. In the most extreme cases, the reason for low oil pressure at idle is due to engine damage.One of the most serious issues that can happen to your Chevy Silverado 's engine is if it ends up with low oil pressure. Low oil pressure will cause the engine to seize up. When the oil pressure light on, it should be assumed that the engine locking up is imminent. We advise not running the engine until the issue can be properly diagnosed.Other potential causes: Symptoms of low oil pressure in Chevy Silverado. Warning message on the dashboard: Low oil pressure gauge reading: Engine noise: Poor engine performance: Steps to fix low oil pressure in Chevy Silverado. Step 1: Check oil level and quality. Step 2: Replace clogged oil filter.Before doing them I have noticed when turning the ignition key to run before starting the engine the oil pressure gauge would move up to 20. then when running when cold oil pressure would be 60 psi on gauge. Drive to work on highway as engine got hot I'd have 40 psi at 1500+ engine rpm. At hot idle of 800-1000 oil pressure showed 20 psi on ...But like you said, these are only "directionally accurate gauges", so I am not worried about minor fluctuations. I think your are just fine. NEW: 2021 Silverado LT Z71, 5.3L, Katzkin leather, soft tonneau, bedliner. OLD: 2010 Sierra All Terrain, 5.3L, Range AFM delete, 2.5" level lift, Grenade XD wheels, 305/55/20 Nitto Terra Grapplers.If the increase in the oil pressure gauge is no longer normal such as when the oil pressure is unusually high when you are accelerating, here are some of the common reasons: 1. The oil filter is dirty or contaminated. The oil filter is there to make sure that the impurities in your engine oil are filtered out. However, if the filter is dirty or ...6 posts · Joined 2018. #1 · Jun 11, 2018. 2000 Silverado 4.8 2wd step side with 142000 kms. (Canadian) The oil pressure gauge does not drop to 0 when shutting off the engine. It stays about 265 Kpa until you start it then it goes up to about 325 Kpa at idle. Hard acceleration causes the gauge to go to between 450Kpa to about 520 Kpa.Advertisement Shotgun sizes have always been measured in a somewhat roundabout way. You would think that the "12" in a 12-gauge shotgun corresponds to some linear measurement -- ma...10 posts · Joined 2013. #4 · Feb 7, 2015. found this thread after changing oil sending switch and filter. '07 5.3L 190K miles with fluctuating oil pressure. tries to read low with warnings unless keep in low gear or manual reving above 1K rpms. Then when warm will read about 35-40 most of the time. condition was present before changing switch ...641 posts · Joined 2018. #1 · Mar 14, 2020. my 98 k1500 with a 5.7 has a problem , the oil pressure will fluctuate from 40 to zero then back at highway speeds. back in sept my gauge started fluctuating at idle , so i replaced sensor , problem solved , till i went on road trip back east , coming home after several hours of driving , i noticed ...Among the other issues I listed wrong with my 2007 1500 6.0 VortecMax in another post is the oil pressure gauge isn't working. After picking up the truck from my ex wife and driving about 80 miles i noticed no oil pressure. I immediately called her and she said it hadn't worked in months. So it must have oil pressure or the engine would be toast.Over the last year my oil pressure gauge has started to fluctuate randomly. It will do it for a few days then go away for a week or maybe a couple months to come back for no apparent reason. I always check my oil level and it is good. I'm using the same oil QS 5w30 full synthetic and filter purolator as always.Locate the oil pressure sending unit on the engine (the parts store can sometimes tell you where it is), remove it and follow the instructions that come with your …Sep 2, 2019 · What is involved with the valve lifter How do you verify the oil pressure. HI, Remove the intake manifold and then unbolt and remove the valve lifter oil manifold from the engine valley. Remove the oil pressure sensor and screw a mechanical oil gauge in its place and check pressure on the gauge.As I mentioned above the oil pressure gauge registers right at 20 PSI regardless of engine RPM. At high RPM (highway speed) it may tick up to just over 20 PSI. It seems artificially frozen in place. It does go to zero when the engine is off and it goes full-range when the engine is started.1. Change oil filter/oil. 2. Put mechanical gauge on and replaced sending unit. 3. Replace oil pump main and rod bearings. Only thing left in mine are the cam bearings that could be messing up my pressure hope you have a better out come. 2001 Jeep Grand Cherokee Laredo 4.0L Selec-Trac 2.5" ROR lift. 1977 Trans Am 400 bored 40 over new paint new ...06 Silverad0 5.3L - Low Oil Pressure only during cold starts. His problem was the O-RING in between the pick up tube and the pump. According to the post, he dropped the pan and replaced the O-ring. Here's a quote from his thread: "The o-ring left residue inside the pump socket and on the tube it slides onto.6.0 no/low oil pressure. When i pulled into work this morning my dash showed no oil pressure at all it was ready 0. I got out and ready really bad knocking/tapping from the top end. Well I shut the truck off had it towed to a place to fix it. They changed the oil filter and the pressure went up to reading 5 pounds on the instrument cluster and ...May 7, 2022 · #chevy #cheverolet #chevysilverado #2500hd #pickuptruck #pickup #truck #oilpressuresensor #ZmeisterProductionsThe oil pressure gauge was pinned to max all the time in our Chevy Silverado. With the ignition turned on and the engine off the needle would still go to max, but if you shut the …The oil pressure gauge going to 60 lb. over 3700 RPM, is the calibrated engine speed the oil pump goes into the high-pressure stage. No repairs should be attempted, this is normal operation for these engines. Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without ...I'll get an low oil pressure warning get back on the throttle. And the coolant gauge is worse. Factory gauge reads 210 and on edge is 185. Factory gauge doesn't move to 215 and then starts to rise. 2010 Gmc 2500 Duramax 853,500 Odometer miles - sold Nov 2018. 2013 LT CCSB SRW bought with 508,000 miles, now over 703,000 miles.Chevy Silverado 2018, Aqua Edition Gauge Face Kits by US Speedo®. Speedometer Range: 140 MPH. Lighting Color: White Numbers. Lighting Color: White Day Blue Night Background Lighting. Gauge Color: Anodized Blue. ... Universal Comp II LED Series Oil Pressure Gauges by Marshall Instruments®. Diameter: 2-1/16". Pressure Range: 0-100 PSI.Nov 8, 2015 · 226 posts · Joined 2013. #1 · Nov 8, 2015. Last week I noticed my oil pressure gauge was fluctuating at random times between 20 - 60psi. I kept a watch on it & it started acting normal again until last night. While driving to the store I noticed the oil pressure gauge had pegged out at 80psi. Of course I freaked out and started to pull over.LQ4 Oil pressure gauge fluctuations, sending unit repla. ... 2012 Silverado 3500 dually, 6.0l, crew cab, long box replaced w flatbed. Save Share. Like. This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.So normally my oil pressure would sit at 60 psi but its recently been having issues so at idle it completely drops to 0 psi it did however once sit at 30 psi when i was parked at home. Its also a gradual drop so its not an immediate drop to 0 psi but it does drop. As soon as I hit the gas it jumps back up but never at 60 psi more like 50 psi.This result in aerated oil and in the case of the tiny passages of hydraulic/roller lifters they fail to fully pump up. As aerated oil accumulates the pressure drops and can be seen on. The gauge. Your oil pressure gauge on the dash should read 38-45 psi at idle even on high mileage engines. Under moderate acceleration it should easily clear 60 ...36 posts · Joined 2010. #13 · Aug 7, 2011. I have hung around the dealership to see what is normal oil pressure for my 2010. I even got to take a 2011 new for test drive. Just like my truck when warm, 30 psi idle, 40 psi at 60-70 mph and 55psi at wide open. Looks low compared to my old 2002 but it is normal.The only time I can get it to go above 35 psi now is if I push the engine hard, like around 2500-3000 RPM. But at normal cruising speed around 60 mph, 6th gear, (with the 3.42 ratio) it's around 30 psi. I'm due for an oil change in another 1,000 miles so I may top it off, get the oil changed, and see if it happens again.If the valve is absent, the oil supply passages inside the engine lose their oil. It will take a few seconds for the oil pump to fill the supply passages back up after the engine starts. Expect that problem to be worse in the mornings, after the car sits overnight. Install the correct oil filter and the problem should be fixed.36 posts · Joined 2010. #13 · Aug 7, 2011. I have hung around the dealership to see what is normal oil pressure for my 2010. I even got to take a 2011 new for test drive. Just like my truck when warm, 30 psi idle, 40 psi at 60-70 mph and 55psi at wide open. Looks low compared to my old 2002 but it is normal.Truck Model. GMC Sierra Classic 1500. Engine Size. 350 tbi. Hi Everyone. I have an issue with my 1987 GMC pickup. I changed out the motor to a ZZ6 crate motor. I am using the factory oil pressure guage which reads up to 60 psi. It is overloading the guage as the the ZZ6 puts out 60 psi at idle according to a manual guage we put on to check.Subject: Oil Pressure Gauge Fluctuation After Startup and Over 3700 RPM Models: 2015-2016 Cadillac Escalade 2014-2016 Chevrolet Silverado 2015-2016 Chevrolet Suburban, Tahoe 2014-2016 GMC Sierra 2015-2016 GMC Yukon Yukon XL Built with RPO's 4.3L 5.3L 6.2L L83 L86 LV3 This PI was superseded to update Model Years. Please discard PIP5121.11 posts · Joined 2008. #1 · Oct 21, 2008. I am noticing the the oil pressure gauge fluctuates from about 30 PSI to 60 PSI depending on RPM. Also when cold the pressure tends to be higher at low RPM and drops down to around 30 PSI as the engine warms up. Engine temperature and oil level appear normal. This is my first diesel engine and GM truck.The common causes for these include oil pump failure, contaminated oil, worn engine bearings, and a faulty oil pressure sensor. You can diagnose this issue if …Why does my 2014 Silverado oil gauge fluctuate At idle it stays at 40. While at a constant speed, 55 MPH it will start going from 40 psi to 60 psi? Report; ... Oil pressure gauge spikes at 60 8 Answers. I took the instrument cluster out of my 1988 chevy 4x4 pickup to replace a bulb.226 posts · Joined 2013. #1 · Nov 8, 2015. Last week I noticed my oil pressure gauge was fluctuating at random times between 20 - 60psi. I kept a watch on it & it started acting normal again until last night. While driving to the store I noticed the oil pressure gauge had pegged out at 80psi. Of course I freaked out and started to pull over.The most common sign of diagnostic code P0521 is your Check Engine light turning on. A dashboard alert will likely accompany it. Your engine may also display some other symptoms. In some cases, your OBD scan tool may read other P codes in addition to P0521, including P0520, P0522, P0523, and P0524.12551 posts · Joined 2015. #4 · Aug 5, 2021. It could be the oil pump and/or the O-ring that seals the oil pick-up tube to the oil pump. The O-ring can get hard/brittle over time and cause low oil pressure. Oil pressure should be verified using a manual gauge, not just the dash gauge.Save money fixing this problem yourselfTHIS WILL WORK ON 07 -12 CHEVY TAHOE,,SILVERADO / GMC SIERRA & YUKON#1 · Apr 26, 2020. I got a 14 Silverado with a duramax a couple months ago. The oil pressure has read high since I got it. The last couple days it has been fluctuating. I will …4 posts · Joined 2023. #1 · Dec 7, 2023. My oil pressure sending unit fail, reads 0 or 80 psi, then after a while starts to leak oil from the pigtail. This has happened about 5 times over the last 3 years. The good news is I'm getting pretty good at changing it, bad news is it's not fixing the problem.#PIP4786: Low Oil Pressure Message Light - Inspect Valve Lifter Oil Filter - (Apr 5, 2010) Subject: Low Oil Pressure Message/Light - Inspect Valve Lifter Oil Filter Models: 2007 Cadillac Escalade Built before April 1, 2006 with 6.2L L92 Engine (These engines were built with AFM Hardware but the AFM system was disabled.)jusd33 Discussion starter. 1 post · Joined 2012. #1 · Jun 12, 2012. I have a 2007 silverado 4.8L (new body style) ... I am having a problem with my oil pressure gauge. I was driving and noticed my oil pressure gauge was reading zero. I kinda know the gauge works because it went from below zero to zero. no other lights came on or messages ...When open it will look like a small plunger with a spring. Spray carb cleaner onto the piece you unscrewed (NOT INTO THE HOLE). When it starts to flow clean, clear carb cleaner (Not dirty liquid) replace this piece and plug it in. 9 times out of 10 this can cause power loss because it controls the amount of air entering the engine through the TBI.Suburban LT3 5.3L V8. Automatic transmission. 30,000 miles. The vehicle will have a fluctuation on the oil pressure gauge from approx 35 psi to low 20's at idle. When oil pressure fluctuates, there is a noticeable amount of vibration from the motor. I not talking about oil pressure drop after coming to a stop, but instead when car is standing ...The possible cheap fix to this issue can be a simple oil & filter change. However, if you regularly change the oil and the filter, we bet the problem lies in your oil pressure pump or sending unit. 3. Loose Wire Connection. If your oil pressure gauge acts erratically, we bet the issue lies in the electrical connection.There are several possible causes of low oil pressure warning light in Chevy Silverado 1500, including low oil level, a malfunctioning oil pressure sensor, a clogged oil filter, or a failing oil pump. 1. Low oil level. A low engine oil level can cause the low oil pressure warning light to turn on in your Silverado 1500.bad oil pressure sending unit bad oil pressure gauge. I'd bet money on the oil pump or o ring--very common . 2014, LTs-cam'd-tuned-4:10-drop'd-24's-4500 watts -----> CLICK ... The week before Christmas i was hit at a stop sign by 2014-2018 silverado. It totaled his truck but since mine is lifted and he caught the driver side front edge of mine ...Synthetic Grease with Teflon, Superlube (GM Part No. 12371287, in. Canada 10953437). Chevrolet recommendations and specifications for oil and fluid for 2018 Silverado 1500. Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2018 Chevrolet Silverado 1500 user's manual.. Advertisement There are two LP gases that can be stored in liquid formFeb 14, 2022 · The possible cheap fix to th Because engine oil has a detergent additive in it. That detergent can loosen accumulated sludge and put it into circulation inside the engine, where it can cause all kinds of damage, like anther clogged up oil pickup screen. Now you know. If your oil pressure gauge fluctuates while driving, there are a number of problems that could cause the issue.Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) - oil pressure gauge fluctuation - Hey y'all. Today, my oil pressure gauge started swinging. At idle and off-idle it will bounce on the L and climb to the middle of the range at highway speed but slowly drops back to L and bounces. Step 2 – Install the new oil pressure sending unit. Thread in t 448 posts · Joined 2010. #2 · May 19, 2010. Your oil pressure SHOULD go up when you hit the throttle. The more RPMs the engine turns,the more the oil pump turns. When the engine is cold, you will have more oil pressure then when its warmed up,too. At 40psi...that sounds right. 2004 Silverado 2500HD LT 4x4 QuadraSteer.Going through 2 oil pressure losses probably did it in. One of the common issues I have read about with the pickup tube is that you have to use a certain O ring there, apparently there are (or were) 2 styles of O ring and you absolutely have to use the correct one for it to work. My Build Log: silentbravo's 2001 GMC Sierra 2500HD. The oil pressure will be slightly lower at idle, normally between ...
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