Fluctuating oil pressure at idle

Fluctuating oil pressure at idle. 13. put 5 OZ of MMO/ marvel mystery oil in the crank case give it 100 miles. My son has a 2005 GMC pickup with a 5. If it bounces it could be a sign that something is wrong. Aug 6, 2021 · GM says 6PSI hot at idle is the minimum before damage can occur. #23 · Sep 22, 2020. Aug 30, 2022 · Yes, fluctuation of the oil pressure gauge at idle is absolutely normal, in fact, it relies on the RPM of the engine. Fresh engine rebuild, finished and started engine two weeks ago. Jul 1, 2015 · Hello to all that can help, i have a 1997 2500 12v 5spd, 289000 miles, Just had a fresh oil change, i also have installed a mechanical gauge, and new sending unit for the dash gauge. The message pops up with the warning bell, the gauge quickly sweeps to L then it comes back up and goes away. ticking is usually the lifters. Spray the plug out with contact cleaner and dry it with a paper towel. Apr 28, 2009 · My idle PSI fluctuates slightly with the lumpy idle of my cam. But it is not a high pressure pump. When I'm out on the road the oil pressure usually runs about 25 to 28 psi. I will crank it and the pressure will start out a little below halfway past 40 and the more i run it the more the pressure falls. Kinda like a 1/4 inch back and forth. It is a high volume oil pump. Mar 31, 2023 · Measurable and Quantifiable Data on Engine Oil Pressure Gauge Fluctuation. I just purchased a 2018 GMC 2500HD Denali and ever since I bought it I have noticed that the oil pressure gauge jumps around a lot. #1 · Jan 10, 2021. Oil pressure fine. On my '02 Silverado the oil pressure stays constant at 40-42 psi from idle to 70mph. While driving at higher speeds, you may see a slight decrease in oil pressure, but it should not fall below 30 psi. There is fast idle and curb idle. My oil pressure has been fluctuating and its only got worse here lately. Apr 4, 2016 · 2006 Pathfinder LE, Low oil Pressure at Idle. low idle can be caused by a number of things, high likelyhoods are dirty throttle body, worn spark plugs, and vacuum leaks. Aug 17, 2017 · The car has an oil pressure indicator but its only function is to operate like an idiot light. 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. I have been seeing some weird oil pressure gauge fluctuations lately. Nov 26, 2008 · oil pressure at idle. Oil was full. 486rwhp/ 430rwtq. I sometimes notice the oil pressure fluctuating between 18-20 psi on a hot idle and in gear (it's a steady 20 when in park or neutral). Cold startup pressure at idle is 10-15 psi. I have an '04 and I know that is normal. Additionally, fluctuation is normal when the engine oil is Mar 30, 2020 · The slightly more than normal rail fluctuations seem to follow the idle changes logging in HPTuners, but seem slightly behind like the truck is adjusting rail pressure to try and idle at 750 instead of the rail pressure causing it. Jan 27, 2007 · I've searched TC and the internet and have found several good websites describing how to interpret various vacuum gauge readings, but none describe what mine is doing. Cold start oil pressure was at 60-65psi at idle and up to 87psi when accelerating to about 40mph. If I it to 1000 rpm, the oil pressure goes to about 65#. :yes: Thanks for the clarification. That's not my concern. Shut off engine, check for pressure relief valve stuck open or a clogged oil. 3L V8. formula97 Discussion starter. Mar 15, 2023 · Car oil pressure: 25 to 65 PSI while driving, 20 to 30 PSI at idle. Warm Idling: At a cold start, oil pressure can reach around 60 psi, while idling warm, it Dec 18, 2017 · Going down the road, on level highway, the oil pressure will go between 40psi - 72psi. Needless to say, I'm preparing to replace the oil pump (and possibly main bearings). 1 amp increments. I have been doing some reading, and it seems this is a common problem with this engine. #1 · Apr 2, 2014. Sep 16, 2013 · Flucuating oil pressure. 0 4x4, 140,000 miles, started having low oil pressure at idle. I went for a drive to auto zone across town and reset the CEL again. Just purchased my truck about 3 weeks ago and looking for some insight. It is a positive displacement pump, so the volume of the oil pumped varies directly with engine RPM. Anything going lower than the minimum is considered to be running low. When the oil pressure light on, it should be assumed that the engine locking up is imminent. Jun 4, 2018 · Mdesteiguer Discussion starter. Mar 22, 2022 · So, the first few seconds after starting the engine the gauge reads very low. Jan 6, 2011 · When the revs are above idle; or the engine is still cold, the oil pressure is reasonable. 6% IPR (fluctuates) FICM 48. I did just get an oil change and I suppose it's possible they put something like 20w50 in but I really doubt it. When you go to idle the pressure drops to about 26-28 psi. Oil pressure at idle should most likely be ~20-30psi, while at higher RPMs would be between 30-50psi. Running 30 wt oil. I've actually had it drop completely to zero one time and Sep 3, 2011 · My mods are in my sig. BoostDistrict LSA Kit & Intake @ 12PSI, FIC1000 Short injectors, DW300C in tank pump W/ UPP Aux Fuel System. Any thoughts or advice to ease my concerns would be greatly appreciated. 73 - Project/ProStreet. If the oil pressure is consistently below this range, it may indicate a problem with the oil pump, oil pressure sensor, or a dirty oil filter. If the reading is below 40 psi, there could be a problem with the oil pressure. On 1st trip to the dealer, they replaced the pressure-sending unit/switch. I have a 2002 Silverado Z71 pickup. From a dead stop the pressure stays around 20 psi and when you step on it, it rises to abour 42 psi. There is a port on top of the oil filter housing ( it’s 1/8 npt if I remember correctly) , that’s easy access to put a cheap temporary gauge into and see if the indicated condition actually Jan 29, 2018 · Curb Idle (5 psi) minimum. If it was then it would be just the oil pressure sensor going bad. I got another one from other Nov 23, 2023 · At idle, an engine’s oil pressure should be around 20 to 30 PSI. The oil pressure goes NUTS at higher rpm. May 31, 2008 · After heating it up to operating temperature the oil pressure dropped to 10psi at idle. May 20, 2021 · I shut the car off, wait about 30 minutes and magically gained 20 psi oil pressure. Aug 1, 2006 · Everything seems fine. Oct 3, 2019 · He said at accel to 40mph COLD. Now it goes all the way down to 5 psi. Apr 14, 2021 · Lug the engine and lose rod bearings. Lately I've noticed it's been fluctuating between Jun 9, 2015 · I think that is where it should be. Cold idle 60lbs cold running 70lbs Hot running 45-55lbs depending on how hot it is. I've only put about 7000 miles on it. jpextreme Discussion starter. Sep 28, 2015 · Received 140 Likes on 123 Posts. If you’re noticing that your RPM are constantly going up and down, even when you’re not accelerating, it’s likely that you have a bad idle air control valve. When you accelerate, it seems to level out and oil pressure is good, but will it will flutter again when you return to idle. when the truck is sitting on a uphill grade the pressure will drop to zero at Idle but back to level or pointing down hill it will hold at 25psi at idle. But if you keep pushing the peddle it will lose power and throws on an engine light for the icp Jan 29, 2021 · I have a 2006 5. Normally after my car reaches operating temperature my oil pressure will read 30psi with the car in drive at a stoplight at idle. My high volume pump keeps cruising pressure at 58-60, and when it's cold, I can push 88-90psi if revved up. Feb 13, 2009 · I have owned Chevy/GMC, Dodge, and Ford trucks over the years, but have never seen a pressure gauge fluctuate that much. If you were at 20, I wouldn't worry about bearings etc. lifters tick if oil pressure is low or you have a carbon/sludge problem. 0 engine is operating correctly, you should see between 40 and 60 psi on the gauge while the engine is idling. Oct 30, 2017 · The oil pressure went up just like it always does. Start engine, then carefully reach under the top hat and try to pull up on the diaphragm. 6L for a while. Recently I changed the oil pressure sensor at the back of the block by the camshaft sensor. 7-29. It bounces a bit. If you think it’s vacuum related - remove the oil cap while it’s running. Jun 2, 2013 · The most likely cause is internal. 28 posts · Joined 2018. Yep, what Dave said. #2 · Oct 16, 2009. Aug 29, 2023 · Bad Idle Air Control Valve. Low oil pressure will cause the engine to seize up. If you hear a rattling or knocking noise, it may indicate a low oil pressure or a loose timing belt. Start the engine and allow the engine to warm up at idle. Apr 2, 2014 · 15K views 14 replies 8 participants last post by formula97 Aug 17, 2014. at 45 to 75% Throttle oil pressure is about 40psi, and 100% throttle mine goes and stays at 60PSI as long as its Floored. The best way to determine if your idle air control valve is the issue is to check Jan 2, 2018 · 5 posts · Joined 2017. So with any really rpm fluctuation the oil pressure will move also. 1981 Toyota Celica GT 500000 mi original engine/tranny with 79 Supra F312 rear. #4 · Jan 5, 2013. Moreover, lower RPM means lower oil pressure. Cold Start vs. 2013 GMC Sierra 2500HD 6. I'm using the same oil QS 5w30 full synthetic and filter purolator as always. A bad idle control valve can also lead to fluctuations in the RPM. Lifters sometimes clatter. 380 posts · Joined 2010. #3 · Jun 30, 2018. The rpm's are holding steady with the cruise control on. #1 · Oct 18, 2011. Sensor Mar 26, 2017 · Oil gauge fluctuation. I regularly check my gauges using the performance pages. Feb 9, 2022 · This time same thing using mopar oil filter. 0L Diesel, Normal oil pressure is about 20psi, idle, 0 to 40% throttle,. Is the 20 lbs too low for this engine Oct 28, 2022 · Hello, wanted to ask what kind of oil pressure are you guys getting at idle after you drive your jl wrangler with a 3. Jan 19, 2017 · Oil pressure on the NAA runs 48 psi at wide open or idle when warmed up, but will drop down to 15-20 for 3-5 seconds then climb back up to 48 once a while. 0 idle is ~600-650rpm. ONE time I noticed my fuel pressure gauge fluctuate from 14psi to 13psi and then back up to Jun 21, 2011 · Here's the symptom list: -When RPM's drop below 1k, Oil Gauge drops to 0 and lights come on. Full MM setup front and rear with Bilstein coil-overs. The most common cause is simply that the oil level is low and needs to be topped off. After getting on the car or after about 1000 miles of driving May 9, 2011 · Small Block V8 (221, 260, 289, 5. When everything got warmed up, the oil pressure would only go to 36 psi, down from it's normal 60#, at an idle. DiabloSport i2 inTune, HemiFever 91-octane custom tune, Tazer. Like. Then, the gauge suddenly shoots upward to normal and the ticking noise stops. And it doesn't just stay there. Fasts idle is at 950rpm until the engine warms up and I kick down the idle cam. Jan 5, 2013 · rsoto80. Common causes of the P0521 code include sensor failures, wiring issues, and mechanical engine problems. If you hear a popping or backfiring noise, it may indicate a misfire. Nov 1, 2010 · J. Inadequate Fuel Supply. 25. K. Jun 3, 2013 · The DT-466 in my IH-3788 seems to have dropped oil pressure on idle. edwardsl said: I am using the Mercruiser recommended oil in weight 25-40. if it goes away or lessens then the oil your using is bad and or bad oil filters/going too long on oil/ your using Jun 27, 2018 · 3885 posts · Joined 2009. #25 · May 18, 2015. Dec 22, 2011 · 5 posts · Joined 2010. I have a 2000 as well, and it is about 65-70 at startup, and drops down to about 20 at idle when warm. However, it could also be due to leaks or an issue with the oil pump. This is puzzling. Again, press the gas pedal and hold the pedal from 2500 to 4000 RPMs for around 20 minutes. speeeddmonx51. When she is cold the pressure till get to just below 40. Ideally there should be a very small amount of vacuum. 5 bar at start up, 1. Jul 30, 2018 · Very lopey, rough idle could be a symptom of a stuck EGR pintle. 3L V-8, with 180,000 miles. At idle, the needle bounces rapidly (almost violently for lack of a better term) between 2 and 12 hg. The fix I have had success with is installing an 8. Fluctuation occurs when the engine is too cold after being left idle for too long Dec 8, 2010 · My engine doesn't idle that smooth and mine fluctuates at least 5 psi. A consistent oil pressure level at idle within the safe limit is critical to ensure the good shape of the engine and its lifespan. So basically I purchased this vehicle with 122,000 miles (now has 128,000) and notice the pressure gauge was maxed out (sending unit had gone bad), so I replaced it myself and everything was fine. Do not forget to look at the manual of the vehicle to help follow the correct range of RPMs. If it is bad enough, when I accelerate from a stop it lurches forward and loses power for a split second. thanks. Put some dielectric grease into it before plugging it back into the new sender. #4 · Oct 8, 2006. 2002 WS6 Trans Am. May 12, 2015 · Remove the engine oil pressure sensor and install Oil Pressure Line and Gauge Tool C-3292 with a suitable adapter. Bad idle: 615-680 ICP (fluctuates) . #5. Then, at idle, the pressure will sometimes be as low as 5-10. Lower oil pressure with lower RPM. After it cools for 2 -3 minutes an I bump the throttle to 900 rpms it sits around 20lbs. It usually sits at about 45psi at idle and 70-80psi at 70mph. Over the last year my oil pressure gauge has started to fluctuate randomly. I always check my oil level and it is good. So the oil pump goes up and down faster once the engine gets activated. I pulled over and checked my oil level and it was good. initial oil pressure running 20w50 80+ psi driving around, after warm up 60-65 driving, 35 at idle. Re: Mercruiser 4. There is no relationship between oil pressure rising and falling and the pressure indicated on Nov 3, 2005 · Does anyone know how low the oil pressure can be at idle on a 327. Hi everyone, I wanted to pass along my experiences with this. 7 Vortec The gauge always seems to read low to me. Anytime the engine is revved beyond 1500 rpm, pressure goes to 40+ psi. somewhere around 05-06 Nissan switched to an on/off sender instead of a variable sensor. Intermittently I get a Low Oil Pressure Warning. Now, if the wire is faulty, it’ll impede the signals from the sensor; thus, the oil pressure gauge goes from 40 to 80 within the blink of an eye. 5 at idle, and 3-5 going running thru the gears. The bottom half of the old filter was pretty dirty. Rather than reading exactly what the pressure is and fluctuating as the pressure changes with rpms, it's now a "Yes, there is pressure" or "Nope, no pressure". Check for symptoms: Another way to diagnose a fluctuating RPM at idle is to check for any symptoms that affect your car's performance, fuel economy, and emissions. Yes, YES! I've seen the tons of threads about the fluctuating oil pressure. When you come to a stop light it will go down to 23-27psi. I've checked the oil and stuff. It plays an essential role in ensuring that your engine receives proper lubrication, preventing potential damage. You have the wrong oil filter installed. Car: 67 Camaro Convertible, 383 stroker, AFR Heads, roller everything, all the goodies, canton oil pan, melling hp oil pump,roots supercharger, boost juice. Anything over 750 RPM, and it sits perfectly still just over half way. I did unhook and bleed the oil line to the guage, but it still does it when warming up. Oct 16, 2009 · 11433 posts · Joined 2008. Oct 18, 2011 · BMTahoe Discussion starter. It fluctuates from as low as around 28-80psi. . It is moving back and forth very quickly, but not the entire range of the gauge. Sep 19, 2021 · A 16 year old LSx engine will not have that much oil pressure. 3 pump and swap the gears over from the old pump. When the water temp gets around 180F (oil about 100F) the pressure will instantly drop to around 40 psi. Jan 4, 2017. Share. 2004 F-350 4x4 CCLB ZF6 VE 12V. I have a 2009 GMC Sierra 1500 5. I hooked up my mechanical oil pressure gauge, and went for a drive. Nov 11, 2017 · When it comes down off fast idle it drops into the upper 80s, then as you drive it goes down into the 70's as the oil warms up. just removed the oil pressure sender its located by the oil filter and clean it out spray it with some carb or fuel injection cleaner you might get away by just cleaning it this way. If the oil pressure exceeds normal parameters, it’s considered too high. Apr 26, 2024 · Too slow can show some oil pressure variations. The two tips I mentioned are common to used Jeeps. 1978 Firebird Trans Am Forged 406 200-4r 3. Or it can just have rough idle with no rail pressure change. The oil pump is connected directly to the oil gauge. Warm idle pressure is 25-30. Yes. 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. Even when it flutters at idle, the oil pressure Apr 11, 2019 · Oil pressure problem remains the same. Its kinda hard to see, but this was a video and recorded at 190 degree oil temps after a 10-12 mile spirited drive. CAUTION: IF ENGINE OIL PRESSURE IS ZERO AT IDLE, DO NOT RUN THE ENGINE. General rule of thumb is 10psi for every 1000rpm. After 10 minutes of idling, pressure goes to 25 psi, lifters are quiet. #1 · Mar 17, 2016. The oil pump and the engine are connected together. Jun 18, 2013 · The gauge only goes up to 70 psi and it's normal for the V6 to bury the gauge when it's cold only, once it warms up it will still hit 50 psi a lot and idle around 30 psi which is normal for the 3. Install or connect the oil pressure gauge at the line pressure tap. 0v ICV. its normalas long as its not pegged all the way low or high then its ok. When it starts acting up, the engine surges and it starts running rough. 3 low oil pressure at idle. Read the corresponding line pressure on the pressure gauge. 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. Mar 10, 2023 · 5. #1 · Nov 1, 2010. Hot or cold I can have intermittent rough idle. 25 Wilwood 6 piston fronts with Wilwood 13x1 single piston rears. The gauge then tells the driver the exact pressure of the oil. When I started it today it went to about 30 then dropped down to 5, then 7 then 5. 3000 RPM (45–105 psi) If oil pressure is 0 at idle. Mine usually will stay at 30 to 31 psi while cruising and will be at 29 psi at idle until the engine oil temp gets over 200 degrees, then it will drop to about 27 psi and sometimes 26 psi after sitting and idling Aug 15, 2023 · If three sensors are giving a fluctuating oil pressure at idle indication,,, well,,,you might actually have a fluctuation in oil pressure at idle. 5 roller rockers, edelbbrock RPM heads, Edelbrock performer RPM manifold, HEI. 225 posts · Joined 2011. That means reved up not idle. #8. 5v. The only thing I changed was the oil and filter. The pressure will go up to about 10-12 psi at 900-1000 rpm. I got the rediculous pressure all over the map except idle. Minimum 10psi at idle with a max of about 60. Mine does about the same. Jul 23, 2017 · 39 posts · Joined 2017. Once she is warm, the idle pressure is at 19psi and when I am accelerating it gets to around 30psi. The engines from your era of LM7 truck engines had issues with lifters and such, which caused a lot of noise when they are worn. However, when my truck is at idle the oil pressure reads 3/8. Before I do that, I now, oddly, have thrown a P0071 code. 1995 Dodge 2500 4x4 160HP/47RH beater work truck. Connect the gauge and turn your vehicle on. It could also be sludge build up in the screen on the oil float which will starve the pump for oil, try taking a corner at 15-20MPH and watching for a momentary oil pressure drop which will yield more clues as to the problem. Excess oil is released through the pressure relief valve. So for less than $20 at retail, you get better low RPM oil pressure. The ICP and IPR "chase" each other around and sometimes it stops at May 27, 2019 · One of the most serious issues that can happen to your GMC Envoy ‘s engine is if it ends up with low oil pressure. The oil pressure gauge has started to flutter when at idle. Sep 8, 2011 · 784 posts · Joined 2014. Black. The oil pressure light has never illuminated when the Sep 12, 2016 · Massive power, great fuel efficiency, and tons of fun. Jan 20, 2022 · Then locate the unit near the oil pan and have an oil seep pan ready. On a hot day and bike fully warmed up, mine (on the dash gauge) rests just above being pegged (0 psi) which is a bit concerning, but at speed it runs @ 30-35 psi. At either idle and when the vehicle is running at speed. The relief valve keeps the pressure almost constant after the oil heats up. When it's cold the oil pressure will go all the way up to 100 psi then after it warms up, it will go back to around 60 but upon acceleration goes back up to close to 80 81. At full throttle the oil pressure around 42lbs (after getting normal operating temp), at low throttle (800 rpms) it drops to 18lbs. 4. 1996 Lexus LS 400 240000 mi and going Nov 11, 2023 · The normal oil pressure for a Cummins ISX at idle should be between 15-40 PSI. I've heard of the high-output oil pumps and was also Apr 5, 2016 · FICM 48. Other day I noticed my oil pressure fluctuates rapidly about 5 to 10 psi when foot off pedal a R's come back down. At a stop sign it usually reads 10. Mar 17, 2016 · 43 posts · Joined 2014. #1 · Jul 23, 2017. Idle has always been a little lower at 12-18 psi at 650 rpm depending on how Aug 12, 2019 · It s/b 9 - 13 PSI (according to GM specs), at idle and under acceleration, preferably 11 - 13PSI. When the oil pressure rises to about 10 psi the gauge needle moves to the NORMAL position and remains there unless the gauge fails or oil pressure drops. Fluctuating Oil Pressure. 8@101mph. May 10, 2024 · The oil pressure sensor determines the pressure and sends the signals through wires to the gauge. 91 Road Racing Fox. Sitting at idle I'm at about 58. This is an older thread, you may not receive a response, and could be reviving an old thread. You may see 25 to 35 PSI on heavy-duty engines. Just curious. Mar 2, 2005 · 143. Arkansas Eco. This may seems normal but when I am cruising at say 75mph, the gauge will show fluctuation from 40-60 or 60-80. 3l with 215k miles. #2 · Aug 7, 2015. Then started up and got low oil pressure warning, 6-8 psi at idle, drove for a few feet and pressure never got above 29. Oct 22, 2022 · If your Jeep 4. 2006 GTO. Warm Idle: ~19 to 20 psi. Curb idle is at 700 rpm. DSX E85 Conversion Kit, Turbo Technology, Inc. I've seen multiple times the ICM (Ignition Control Module) will wig out once the engine warms up after a while (don't use Chinese junk parts). Originally Posted By: Wingman. Location. Mar 29, 2017. . My rail pressure is usually at 5k at idle and when the problem appears it will go to 4k back to 5k with slight rough idle. 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. As an addendum, I first replaced both the oil pressure sender and the alarm switch. 3 Cummins oil pump. I also had water get into motor from intake put high pressure spring in oil pump. Aug 6, 2015 · j cat. Aug 20, 2011 · That fixed it. I have a 496 and while driving the oil pressure is fluctuating. Mar 30, 2018 · The sender if leaking oil into where the plug is that is plugged in, the plug needs the oil cleaned out of it. Mar 18, 2012 · Fluctuating Oil Pressure. Jun 10, 2009 · jn1965 said: I have a couple questions about the oilo pressure in your 199x Suburban with the 5. Chris: probably a bad sender. Corn Pop was a Bad Dude. You must be registered for see images attach. Low oil pressure can lead to increased temperatures, noisy engines, and potential engine damage. Crusing around at 2000-2500 rpm no problems and hold 40-45 psi of oil pressure. #1 · Dec 22, 2011. During idle however it is sitting almost exactly at 20 and occasionally idles "tough Apr 27, 2006 · as long as the oil pressure stays above about 20 psi at idle and below about 80psi your NORMAL and should have no problems, but THINNER viscosity oils pump faster and reach the parts faster on start up where much of an engines WEAR occures, WITH SYNTHETIC OILS,THICKER oils DON,T, provide a big increase in protection as the FILM STRENGTH is Jun 23, 2010 · My Service Manual (2000 EG models) only indicates normal oil pressure @ 2000 rpm + of 30-38 psi, nothing specified for 1K idle. 28 when idle, 80 when gasing. 8-1. Access the PCS Control test on the Scan Tool. Jan 10, 2021 · 62 posts · Joined 2011. My 2011 only has 66k miles on it and I haven't gotten the AFM disabled yet. Replace the sender, and the screen behind it. Last week my 2002 WJ 4. I was at a stop light and the "check gauges" light came on. 5. When fully warmed up it will run 23-27 at idle, 40 Aug 25, 2015 · All I have done is a CP3 pump, 1 set of dragonfly 50hp injectors, water pump and an alternator. -At first only occurred on occasion. Apr 19, 2024 · The sensor helps monitor this pressure and alerts you through the P0521 code if there are discrepancies. N/A 383W. May 13, 2021 · Which is common. But occasionally it will climb to 100 and stay there for a few seconds before gradually dropping back to 90, 80, or whatever. 14x1. This can be caused by a variety of issues, including problems with the fuel mixture, fuel delivery issues and clogging or dirt buildup in the fuel injectors. Of course, that is the one with a knock and a cylinder 3 compression issue. Still at 40 at idle and 60ish cruising. After it ran for awhile on the highway the psi went down. -When RPM's go back above 1k, everything goes back to normal. -Only occurs when coolant temp has reached around 210. 368 posts · Joined 2003. OK, so while pulling an empty 30ft gooseneck i noticed after about 45 miles when i pushed in the clutch my oil pressure gauge would drop below 0 on dash gauge Dec 20, 2020 · I removed the oil pressure sensor and replaced the oil pressure sensor's filter today. Checked with the local dealer and they don't really seem to know if it's supposed to do this. It has 50K miles less then my grand and seems to me to have low oil pressure. 0L 6L80e - Daily Driver. Jan 20, 2022 · I've had my 2020 dodge challenger RT automatic for a year and a half. If the clean side connection is restricted then that would provide a tremendous amount of vacuum in the crankcase which can trigger the low oil pressure. Post oil change drove for about 20 miles no problem. COL. It takes about an hour of machinework to shrink down the 8. 8/351W) - oil pressure gauge fluctuation - Hey y'all. And a whopping 16-18 hot idle. This means that the needle of the oil pressure gauge bounces whenever the engine is started. I noticed last week that when driving my oil gauge is sitting at 45-35 when it gets warm. Now I am noticing the oil pressure fluctuate from 200 Kpa to 600 Kpa. About 15-20psi at idle and 45-50psi when cruising on the highway at 70mph. The fluctuation starts while you are driving at a steady rpm at 2500 to 3000 this is my crusing speed. 06 Dodge Charger R/T. 1. About 2 weeks ago I changed the oil myself (pennzoil platinum, with a purolator filter). It never drops down to the low mark, but it does drop down to the lower 1/3 of the swing. Aug 1, 2013 · So been dealing with low oil pressure for a long time on my 06 trailblazer but it at auction just short of two years ago, since then, but just figured something out (maybe). Jul 30, 2016 · 350 chevy engine oil pressure. If you REALLY care about whats going on, get a real gauge and check it. 7413 posts · Joined 2010. If there is no change in idle characteristics and it seems stuck, chances are you need to replace it. Jun 17, 2017 · 116 posts · Joined 2002. When driving, it does jump up to 40 psi. -Over time, occurred every time I drove. It levels off around 15 when you kick the rpm's up to an estimated 2000 or so. The opposite can also be true. 6l Duramax - just changed the oil and filter (Fram PH100) at 3000 km to remove any breakin wear etc from engine. Aug 5, 2020 · 26 posts · Joined 2020. #1 · Jun 4, 2018. Increase DESIRED PCS in 0. My oil pressure gauge is bouncing around in a way that it had never done before. Every engine with oil pressure problems got worse as engine warmed up. Oil pressure needle bouncing around. Alberta. Others stayed pretty much the same from startup, to idle, an own through acceleration. It happened to me (among others) with a new Spectra Premium distributor within a couple 1000 miles. i own a 2020 Sierra 1500 with the 3. It fluctuate pretty badly, up and down all the time. Jun 5, 2010 · I really interested to see if sending unit can cause all this. 9 kPa (10 psi). We advise not running the engine until the issue can be properly diagnosed. 3 posts · Joined 2011. Truck oil pressure: 30 to 70 PSI while driving, 25 to 35 PSI at idle. 04 Nissan Armada all stock. Oct 11, 2022 · If your oil pressure gauge is fluctuating, it could be due to a variety of factors. Aug 25, 2012 · Aug 25, 2012. The fluctuating engine oil pressure happens consistently. 2009 Pontiac G8 GT L76 6. #1 · Jan 2, 2018. Dec 14, 2011 · Usually the pressure is somewhere between 30 and 50 when driving on the highway. However, I notice my oil pressure fluctuate pretty badly. I believe that the reason you only hear about it on 05-06 models is that in 07 onward, they changed the pressure gauge to a dummy gauge. :confused2: Feb 15, 2009. 2012 R/T with Road&Track and Super Track Pak, HHP 180°F thermostat. Just noticed while on the highway, at about 75mph and 2200 rpm my oil pressure is reading about 77 psi. Doesnt fluctuate at all if your on the pedal the least little bit, just when idling. I THINK I'm used to seeing this about 10-15 psu lower. I'm assuming the oil pump is going bad and I was wondering if anyone has had the above problem with their inline 6. Start the engine and warm to operating temperature. Personally, I would want a minimum of 15-20psi at idle. Engine seems to be running very good as it usually does. Tune. Oct 19, 2014 · Truck starts and it takes about 5 sc for the oil gage to go up the big problem is when you get on the gas and the rpm gets up to 2 1/2 - 3000 the oil pressure gage on the dash drops to 0 and you let up on the gas the gage goes back up to normal . It’s probably accompanied by some loud ticking noises from inside the engine. 6 it has a high pressure/ high volume pump for it's 5 miles of timing chains needs tons of oil dumped on them. However, this morning I ran into a slight issue after about a 30 min jaunt on the freeway. This is on a 2002 WS6 Trans Am. I am familiar with the 10 psi per 1000 rpm rule, but most newer cars that I have dealt with always seem to have well above 30 psi anymore. Occasionally, at idle, the oil pressure will drop almost to zero, and the oil pressure light will illuminate. The idle rpm, per the mechanical guage, is just at about 600. Jul 30, 2023 · The oil pressure gauge monitors your car’s oil pressure. Today, my oil pressure gauge started swinging. Jun 25, 2006 · The oil pump is at the front of the engine, driven by the crank. A high volume pump will also increase pressure because it will be pumping more oil. I then drove for 20 miles and the oil pressure showed 40 to 55 the whole time, resting at 35 at idle. When I give it throttle, it increases to around 1/2 or slightly more if you mash the pedal. Put the gear selector in Park and set the parking brake. Yesterday it started fluctuating from 20 down to 10 then back up again. The minimum oil pressure at idle is 68. It is always after coming to a stop, truck in gear. Oil pumps are not known to fail on these trucks. pickup screen. if it's leaking around there then it could just be reading low until you start going again. So I put the old filter on and no problem. But this can vary depending on the type of engine, vehicle, and oil quality. 0/302, 5. One of the primary causes for an engine to fluctuate in RPM while idling is inadequate fuel supply. No up or down shifting going on. May 23, 2020 · At idle, my oil pressure gauge fluctuates. yeah I'm not really sure why it would only happen in the evening, but a leak around the sensor is probably the problem. xc ju jb xt ei pb gz fs qu yd