Low oil pressure cummins isx

Hello Nich sirI hhave low oil pressure issue on cummins isx 2013. Oil pressure does not go over 35 psi.Esn 79590818Replaced oil Pressure relief valve already but still issue Oil and filter was replace … read more

Fix up your failing lubrication system with a Oil Cooler Kit 4955831 from Highway and Heavy Parts. Don’t risk the health of your ISX; buy high-quality aftermarket 4955831 Oil Cooler Kit from America’s trusted diesel engine parts supplier. At Highway and Heavy Parts, you’ll get a Oil Cooler Kit manufactured in an ISO 9001:2015 certified ...The Cummins ISX oil pressure sensor is located on the rear of the engine, inside the transmission case. It's easy to locate because it's behind the fuel filter and ECM. The sensor is typically connected to the engine block with two bolts. When replacing the oil pressure sensor, it’s important to use the correct type and size for your engine ...Cummins ISX low boost high exhaust temps. I have a 2006 ISX cummins 530 hp with 433,000 miles on it. It is an EGR motor. Problem is lately since weather has started to cool up motor will sometimes loss boost of about 10 lbs and exhaust temp will climb to 1000 to 1100 degrees. You might drive 5 miles and it comes out of it.What causes low oil pressure in a cummins isx? Updated: 10/19/2022. Wiki User. ∙ 9y ago. Best Answer. Compromised oil system, faulty engine oil rifle pressure 1 sensor.Jan 17, 2017 · Jan 18, 2017. #4. Oil pump failing, oil pump pressure relief valve failing, bad crank, connecting rod or cam bearings are about the only sources for low oil pressure. A bad sensor or failing sensor can give faulty reading as well. Test with mechanical gauge for accurate pressure reading. Personally, I'd have an oil sample into the lab last week ... I noticed with many ISX owners including my myself is having this low oil pressure issue. Have checked main and rod bearing, check valve, oil pump, and sending unit. And the problem seem to be within the oil filter. Truck will run 1500 miles with a Fleet Guard and about 3500 miles with a Baldwin high flow filter then oil pressure gradually …I don't recall ever making a delete video. In fact, I would never make a delete video. next,.... 18-20 psi at idle is normal for an ISX with 34-38 above 1000 rpm depending on oil temps. cummins spec is anything above 15 psi at idle. If your oil pressure has fallen off then change the oil a second time and the filters.Oil Pressure Issue on Cummins ISX15 - How to Fix it? Cummins isx15 oil pressure sensor replacement.#oilpressuesensor #cumminsisx Playlist Recommendation: Tru...

Overall, understanding the role and proper location of the Cummins ISX Aftertreatment Fuel Pressure Sensor is essential in diagnosing and resolving any fuel pressure-related issues in the engine. Regular inspection and maintenance of this sensor can help ensure optimal engine performance and minimize potential problems.The oil thermostat in the Cummins Isx engine is positioned in the middle of the engine block on the driver’s side. It is located right about in the middle of the block, behind the fuel filter and ECM. To access the oil thermostat, you will need some tools. These include an exhaust manifold, oil filter, temperature sensor, and filter housing.2008 cummins isx 15 the oil pressure is dropping random, if i turn off the engine turn back on after 10 sec everything is normal for a random time then again drops, change the oil filter helps for 3000-7000 miles than the same thing, work done : last 10000 miles new oil pressure sensor new crank bearing, new oil pump , 50000 miles egr …Hello Nich sirI hhave low oil pressure issue on cummins isx 2013. Oil pressure does not go over 35 psi.Esn 79590818Replaced oil Pressure relief valve already but still issue Oil and filter was replaced not too long agoOil pressure values depend upon the model of an engine and the speed it travels. It usually ranges from 25 to 65 psi. For a Cummins ISX15, the oil pressure is typically 42 psi at a speed of 65 mph. It can be a sign of issues if your oil pressure is too high or too low. Low oil pressure prevents the oil from getting to the engine. Thus, it ...The picture on the right is of the updated oil bypass valve. It is located in the oil filter head. There is a 17mm allen plug that you remove and it is right behind that. If you have an early 2250, there was a campaign where they would send you the updated version free. Only takes about 5 minutes to install.Sep 21, 2018 · When you see low pressure on ISX check this video. Since I now had oil pressure and my mechanical gauge hooked up, I went for a drive to look at pressures. All figures are based on mechanical gauge readings with engine warmed up, with ECT between 180-195 degrees, and outside temp between 68-70 degrees: Idle: 19-20psi. Cruise 1500rpm: 52psi. High Cruise 2000rpm: 70psi.

Nov 19, 2015 · If I had a 5.9 with low oil pressure the FIRST thing I'd check is the pressure regulating valve located in the oil filter adapter housing. If a piece of trash gets in the valve and sticks it open or even partly open oil press will drop. If the engine has many miles on it I'd put in a new regulating valve and spring. Valvoline is one of the leading providers of oil change services in the United States. Their low-cost oil change service is a great way to keep your car running smoothly and effici...Oct 28, 2023 · The oil pressure relief valve in a Cummins ISX engine is located at the oil pump outlet, just below the turbo where the filter housing is. Its purpose is to open when engine oil pressure reaches a certain value, allowing oil to bypass the filter and relieve excessive pressure. If the relief valve fails or becomes faulty, it can lead to various ... Sodium is a mineral that is essential for human health. It helps the body regulate fluid levels, blood pressure, and muscle and nerve function. Sodium is a mineral that is essentia...

Ink master megan.

Overall, understanding the role and proper location of the Cummins ISX Aftertreatment Fuel Pressure Sensor is essential in diagnosing and resolving any fuel pressure-related issues in the engine. Regular inspection and maintenance of this sensor can help ensure optimal engine performance and minimize potential problems.Slight oil pressure drop after only 15-20k miles after oil has been changed (clogging filters). High amounts of soot in the oil Crank case filters clogging too often Turbo hesitaion/lag Turbo coughing Turbo Actuator Alarms Turbo overspin Charge Pressure faults Turbo inlet temperature alarms EGR actuator alarms Delta-P alarms5 02-11-2021, 07:04 AM. Hey, try removing suction line from pump and hook up rubber hose with clamp and run it into a jug of def. If that works then I would inspect suction line and pick up in tank for cracks. Also remove doser when doing pressure test to make sure it's not dumping the pressure out of the nozzle. Reply.Having problems with cummins isx 870, 2005. Low power, ... I've got a isx cummins engine that is losing oil pressure, drops from 40 psi to 22 psi every 7000 miles, was doing it every 10000 miles at first. If I replace the oil filter I'm good for another 7000 ...Mar 20, 2015. #1. Have 600 horsepower cummins 380000 miles just had oil change start the day with 40 oil pressure but during the day oil pressure kept getting a little lower finally started pulling a load up the mountain oil pressure was down to 20 and loosing power finally got to the top and the high exhaust temperature system light came on ...Sep 17, 2019 · 18-20 psi at idle is normal for an ISX with 35-40 above 1000 rpm depending on oil temps. Specs are: Oil Pressure, 15 psi (Idle), 35-40 psi (Rated RPM) It doesn't sound like you have anything to worry about if that is what you have for oil pressure. Ok. Like I said I recently rebuilt my 2006 cummins isx.

Volvo VNL Semi Truck & Volvo D13, Cummins ISX etc. Engine FAQs; Freightliner Cascadia / Detroit DD13, DD15, DD16 & Cummins ISX etc. FAQs; Kenworth T680 / Paccar MX-13, Cummins ISX etc. FAQs; Kenworth T800 / Cummins ISX Engine FAQs; Kenworth W900 / Paccar MX-13, Cummins ISX etc. FAQs; Peterbilt 389 / Cummins ISX, Paccar …Hello Nich sirI hhave low oil pressure issue on cummins isx 2013. Oil pressure does not go over 35 psi.Esn 79590818Replaced oil Pressure relief valve already but still issue Oil and filter was replaced not too long ago1. Check the sensor location: The exhaust gas pressure sensor 1 is typically located above the front section of the exhaust manifold on the driver’s side of the engine, towards the front of the head. 2. Inspect for physical damage: Examine the sensor for any signs of physical damage, such as corrosion, rust, or loose connections. 3.Mar 20, 2015. #1. Have 600 horsepower cummins 380000 miles just had oil change start the day with 40 oil pressure but during the day oil pressure kept getting a little lower finally started pulling a load up the mountain oil pressure was down to 20 and loosing power finally got to the top and the high exhaust temperature system light came on ...Only 3 with 2019 6.7L engines. 1 engine is trashed due to low/no oil pressure. All 3 have logged extremely low oil pressure since new. He states the ECU in these buses can log the oil pressure and he confirmed the low oil pressure with a standalone gauge. 2004.5 Dodge SB QC 2500 2wd Cummins 600/6spd manual/3.73 LSD.Supply is under pressure by exogenous factors and demand just keeps on truckin'. Here are names I would tap into....XOM I have never seen such a divergence between the Old Worl...Cummins recommends every 500K on the overhead adjustments. With regards to bearings, I didn't see anything in QuickServe specific to the ISX. Most manufacturers recommend monitoring the oil pressure and only consider a bearing roll-in if the pressure drops too low. This is not a problem of yours right now!Apr 24, 2024 · I don't recall ever making a delete video. In fact, I would never make a delete video. next,.... 18-20 psi at idle is normal for an ISX with 34-38 above 1000 rpm depending on oil temps. cummins spec is anything above 15 psi at idle. If your oil pressure has fallen off then change the oil a second time and the filters. The Cummins L10 engine has an oil capacity of 38 liters, or approximately 10 U.S. gallons. The filter has a capacity of approximately 2.6 liters (0.7 gallons), and the oil pan has ...

Feb 5, 2020 · Crankcase ventilation system: The Cummins ISX ’s advanced crankcase ventilation only needs replacement after every third or fourth oil change, allowing for more prolonged operation and more use. Cummins Intebrake™: The Intebrake™ can reach up to 600 braking HP, which helps control the machine and reduce brake wear.

Advertisement There are two LP gases that can be stored in liquid form with only moderate pressurization -- propane and butane. Isobutane, which has the same simple chemical formul...As a water temp sensor, it is located in the side of the cylinder heads. As an oil temperature sensor, it is located in the side of the oil filter stand at the front of the engine. This sensor determines temperature by changes in its electrical resistance. The oil temp sensor is located just behind the fuel filter, just below the back of the ...55. Jun 6, 2009. Coeur d Alene, ID. 0. I was wondering what other's are getting for oil pressure out of a cummins ISX? I have a 2008 cummins ISX 500HP in a Pete 388. Oil pressure runs about 35-38 while warmed up and running 1200-1400RPM. In my old CAT the Oil Pressure ran 60 +/-. dmg1029, Jun 12, 2010.The fuel pressure sensor on the Cummins ISX engine is located above the front section of the exhaust manifold and is plumbed into the exhaust manifold. It is ... If the fuel pressure reading is too low or too high, there may be a problem with the fuel pump, fuel pressure regulator, or other components in the fuel system. ... The oil pressure ...Replacing Cummins isx oil pressure sensorPart # 4921517Tools needed: Ratchet (1/2 or 3/8)Long extension (1/2 or 3/8)Swivel (1/2 or 3/8)Socket (1-1/16)suppor...Sep 17, 2019 · 18-20 psi at idle is normal for an ISX with 35-40 above 1000 rpm depending on oil temps. Specs are: Oil Pressure, 15 psi (Idle), 35-40 psi (Rated RPM) It doesn't sound like you have anything to worry about if that is what you have for oil pressure. Ok. Like I said I recently rebuilt my 2006 cummins isx. This is a 2010 ISM engine. Please note that the ISX engine sensor location will be slightly more to the rear of the engine on the drivers side look for more ...We all know losing oil pressure can result in catastrophic damage to your engine. Boost your oil pressure and your engine's performance by replacing your... | engine, CumminsSep 17, 2019 · Dr. Cummins, I have a Cummins ISX CM870 ESN:79186190. Engine seems to surge when under a load. EGR valve opens and closes only from 0-15% and seems to correspondence with the engine surge.

Clonazepam 832 teva.

Jailtracker sullivan indiana.

I have a isx that just got rebuilt completely overhauled… we are getting low oil pressure at start up (not warm) 13lbs at 700rpm 21lbs at 1000rpm 35lbs at 1500rpm We have used 2 mechanical gages and they read the same we have replaced oil pump, oil pick up tube, oil cooler, all the bearings cam, crank, and rod, oil regulator, oil filter housing… any info …May 5, 2013 · It's been about 10thousand miles since my last oil change in my 2009 ISX and I just started getting some low oil readings to. I just changed my exhaust back pressure sensor a week or so ago and that's been helping greatly. When I accelerate or am at cruzing speeds of 1200-1300 rpm's my oil pressure is fine, reading about 35-40 psi. Cummins ISX15 CM 2350 with no oil pressure. I just in-framed the engine. I modified the oil pump for higher pressure - Answered by a verified Technician ... Good afternoon Nick Working on isx 15 Oil pressure seems low would like a second opinion Coolant temp 203 Oil temp 210Oil pressure on physical gauge 15psi at 700 rpm 26psi …The fuel pressure sensor on the Cummins ISX engine is located above the front section of the exhaust manifold and is plumbed into the exhaust manifold. It is ... If the fuel pressure reading is too low or too high, there may be a problem with the fuel pump, fuel pressure regulator, or other components in the fuel system. ... The oil pressure ...Cummins ISX and other heavy-duty engines. Donaldson filters deliver: • Ultra-high efficiency on fine particulate and oil degradation (sludge), • Higher contaminant holding capacity, and • Minimum oil flow restriction. It all adds up to filters that provide critical engine component lubrication – and simply deliver better engine protection.The fuel pressure sensor on the Cummins ISX engine is located above the front section of the exhaust manifold and is plumbed into the exhaust manifold. It is ... If the fuel pressure reading is too low or too high, there may be a problem with the fuel pump, fuel pressure regulator, or other components in the fuel system. ... The oil pressure ...The ECM sensing low pressure at the sensor will usually alert you that your oil pressure is low. Low oil pressure can also be caused by other factors, such as the oil being changed for a long time. You might have a problem with the oil pressure sensor or the wiring. What amount of oil does a Cummins X15 consume? Fill the engine oil filter with ...18-20 psi at idle is normal for an ISX with 35-40 above 1000 rpm depending on oil temps. Specs are: Oil Pressure, 15 psi (Idle), 35-40 psi (Rated RPM) It doesn't sound like you have anything to worry about if that is what you have for oil pressure. Ok. Like I said I recently rebuilt my 2006 cummins isx.Sep 21, 2018 · When you see low pressure on ISX check this video. 20 Common Cummins Isx Air Compressor Problems And Solutions: 1. Overheating: This is a common issue often caused by insufficient cooling or excessive load. Make sure the compressor is adequately ventilated and not overloaded. 2. Oil Leakage: Worn-out seals or gaskets can lead to oil leaks. ….

Advertisement Oil-fired burners are used in many parts of the country as the basic heat source for warm air and hot water heating systems. Most of the home oil systems in use today...The engine will run fine and strong but will be consuming oil. Cummins changed the design of the top of their liner after discovering this premature issue to prevent the carbon build up on the top of the piston edge. ... The Isx engine is a high flow, low oil pressure system , I have a cm 871 and the oil pressure at idle is around 15 - 20 psi ...I would start by checking closely for boost leaks. Pressure test the CAC. Check the overhead settings closely. Replace the exhaust gas pressure sensor, part number (###) ###-####if it is not new. The intake manifold pressure/temperature sensor or the barometric pressure sensor could be an issue also.I got a Cummins ISX15 that’s been having some oil pressure issues. Only thing is I haven’t actually pulled the head off and actually dug deep into it. So the problem before I took it out of the truck was that the oil temperature would rise to 235 sometimes even 245 super fast. Oil temps would get to 235 during parked regens when it was 90 ...Only 3 with 2019 6.7L engines. 1 engine is trashed due to low/no oil pressure. All 3 have logged extremely low oil pressure since new. He states the ECU in these buses can log the oil pressure and he confirmed the low oil pressure with a standalone gauge. 2004.5 Dodge SB QC 2500 2wd Cummins 600/6spd manual/3.73 LSD.Isx cummins we have low oil pressure also over full oil level it does smell like fuel. 485 hp isx cummins in a 2010 - Answered by a verified Technician We use cookies to give you the best possible experience on our website.Jan 4, 2017 ... Crankcase Pressure High on Cummins ISX 15 ... Oil Pressure Issue on Cummins ISX15 - How to Fix it? ... Low or Fluctuating oil pressure? Bad Oil ...20 Common Cummins Isx Air Compressor Problems And Solutions: 1. Overheating: This is a common issue often caused by insufficient cooling or excessive load. Make sure the compressor is adequately ventilated and not overloaded. 2. Oil Leakage: Worn-out seals or gaskets can lead to oil leaks. Low oil pressure cummins isx, the Cummins gerotor pump is a high volume low pressure low head pump. it is easily damaged by metal cuttings or running dry. the flow of engine oil in the 5.9 Cummins is. 1. crankcase to. 2. oil pickup to. 3. gerotor oil pump to. 4. pressure regulator valve to. 5. oil cooler to. 6. filter bypass valve to., May 27, 2011. RI. 0. got a 388 pete with a 600 isx cummins. Half way through a service the truck will start losing oil pressure on the highway to around 26 psi and sometimes lower causing the engine shutdown lite to come on. If i change the oil filter the pressure is fine. Cut open filters 1 out of 4 were plugged., Ask Your Own Medium and Heavy Trucks Question. After warming up, oil pressure is 30 running, 15 to 18, at idle. After about 1 hour, 20 running, 15 idle. Turn off truck for 30 seconds, its back to 30 running, 15 to 18 idle. Technician: Mike Mcmillan., 2010 Cummins ISX 450 Low Oil Pressure Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Noles2013, Nov 10, 2018. Nov 10, 2018 #1. Noles2013 Bobtail ... , Cummins ISX Fault Codes. Fault Code 111. Electronic Control Module Critical Internal Failure. Bad Intelligent Device or Component. Fault Code 115. Engine Magnetic Speed/Position Lost Both of Two Signals – Data Erratic, Intermittent, or Incorrect. Fault Code 122. Intake Manifold 1 Pressure Sensor Circuit – Voltage Above Normal or …, 5 02-11-2021, 07:04 AM. Hey, try removing suction line from pump and hook up rubber hose with clamp and run it into a jug of def. If that works then I would inspect suction line and pick up in tank for cracks. Also remove doser when doing pressure test to make sure it's not dumping the pressure out of the nozzle. Reply., Cummins ISX15 CM 2350 with no oil pressure. I just in-framed the engine. I modified the oil pump for higher pressure - Answered by a verified Technician ... Good afternoon Nick Working on isx 15 Oil pressure seems low would like a second opinion Coolant temp 203 Oil temp 210Oil pressure on physical gauge 15psi at 700 rpm 26psi …, If the oil pressure gauge on your Toyota is fluctuating or not working at all, the oil pressure sending unit may be the cause of the problem. The first thing to do with any oil pre..., Cummins diagnostic trouble codes list for ISX, ISF 2.8, ISB, ISC, ISLe, 4ISBe, 6ISBe, ISDe, ISM, QSM, QSX engine control units. ... A low fluid pressure was detected in the dosing unit. Description: The ECM determines that the pressure of the exhaust gas is below the threshold., Had leaked some oil into the harness. I replace the sensor and cleaned the harness. Same issue. Hooked up the mechanical gauge, same problem. 65 psi on cold start and then below 20 psi after working 6 hours into the day. I also pulled the oil pan, found some metal in the bottom. I replace all the rod and main bearings., The Cummins ISX lower engine gasket set is a set of gaskets that seal the lower part of the engine, including the oil pan, timing cover, and lower cylinder block. The gaskets are made of materials like rubber, cork, and metal, and they prevent oil and coolant leaks from the engine. The gasket set should be replaced when there are signs of oil ..., The Cummins ISX oil pressure sensor is located on the rear of the engine, inside the transmission case. It's easy to locate because it's behind the fuel filter and ECM. The sensor is typically connected to the engine block with two bolts. When replacing the oil pressure sensor, it’s important to use the correct type and size for your engine ..., Apr 14, 2008 ... Possibility that the oil pump's oil pressure relief valve is faulty or has somehow gotten some micro-something lodged in valve. My Cummins with ..., 20 Common Cummins Isx Air Compressor Problems And Solutions: 1. Overheating: This is a common issue often caused by insufficient cooling or excessive load. Make sure the compressor is adequately ventilated and not overloaded. 2. Oil Leakage: Worn-out seals or gaskets can lead to oil leaks., It's been about 10thousand miles since my last oil change in my 2009 ISX and I just started getting some low oil readings to. I just changed my exhaust back pressure sensor a week or so ago and that's been helping greatly. When I accelerate or am at cruzing speeds of 1200-1300 rpm's my oil pressure is fine, reading about 35-40 psi., Valvoline is one of the leading providers of oil change services in the United States. Their low-cost oil change service is a great way to keep your car running smoothly and effici..., How to replace your oil pressure switch on a Cummins ISXThanks for watching ! I truly appreciate each view that I get on each and every video. For those that..., I lost the oil pressure in my ISX which ultimately shut the truck down. I'm thinking it's the oil pump because she starts when she gets cold and the codes are cleared. Then she gradually loses presssure and after about 5 minutes she shuts down. D.I.D. displayed the following info: Engine Oil pressure value too low/inactive MID128 PID100 …, This can lead to overheating and potential engine damage. 3. Decreased fuel economy. A faulty EGR cooler can cause the engine to run less efficiently, resulting in decreased fuel economy. 4. Increased exhaust smoke. A failing EGR cooler can cause an increase in exhaust smoke, particularly white or blue smoke. 5., High-Pressure Fuel Injection System - For cleaner, more complete combustion. Low Maintenance - Advanced Fleetguard® ES System™ for extended service intervals. Drive up to 35,000 miles (56,000 km) between oil drains and filter changes in light-duty applications. 25,000 miles (40,000 km) in normal use., The first step in cleaning the EGR cooler is to drain the coolant from the engine. Locate the coolant drain valve and use a wrench to open it. Allow the coolant to drain completely into the coolant draining container. 4. Remove the EGR cooler: First, remove the mounting bolts that hold the EGR cooler in place., got a 2010 388 with a 600 cummins...about 150 hours into a new service, i start to lose oil pressure to the point where the low oil pressure light comes on and i have to limp it back to the yard. If i put on a new filter at this point the pressure is fine again anyone heard of this problem thanks in advance, STEP 1A: Check the fault codes. Active or inactive counts of Fault Code 415? STEP 2: Check engine control module (ECM) calibration and clear fault codes. STEP 2A: Check if an ECM calibration If a calibration update for this update is available. fault code is available, does the ECM contain that revision or higher? STEP 2B: Disable the fault code. , Oil pressure values depend upon the model of an engine and the speed it travels. It usually ranges from 25 to 65 psi. For a Cummins ISX15, the oil pressure is typically 42 psi at a speed of 65 mph. It can be a sign of issues if your oil pressure is too high or too low. Low oil pressure prevents the oil from getting to the engine. Thus, it ..., Here's the original specifications for oil pressure and a TSB about the new style pump. aluminum. housing. If you have the pump with the aluminum housing you shouldn't be getting the unexpected oil pressures as described in the TSB. I would check the oil for metal. Remove the oil filter and cut it open., It's been about 10thousand miles since my last oil change in my 2009 ISX and I just started getting some low oil readings to. I just changed my exhaust back pressure sensor a week or so ago and that's been helping greatly. When I accelerate or am at cruzing speeds of 1200-1300 rpm's my oil pressure is fine, reading about 35-40 psi., 55. Jun 6, 2009. Coeur d Alene, ID. 0. I was wondering what other's are getting for oil pressure out of a cummins ISX? I have a 2008 cummins ISX 500HP in a Pete 388. Oil pressure runs about 35-38 while warmed up and running 1200-1400RPM. In my old CAT the Oil Pressure ran 60 +/-. dmg1029, Jun 12, 2010., C/S Low oil pressure and engine wont start Cummins ISX. ... Without further tear down what i assume is the low oil pressure caused the mains to run dry and allowed them to spin binding up the crank and causing the fracture. ... The DOHC ISX had a washer that would explode and send shrapnel through the gear train and into the oil pan though., It is also possible that a low oil pressure may be due to a poorly positioned oil pickup tube. It may be drawing in air instead of oil, which is not a good thing. Check all the joints of your oil pickup tube and look for any signs of damage, misalignment, and cracks., Sep 29, 2016 ... What causes low oil pressure? This is a common question that I get in the comments section and for good measure, as the oil pressure is what ..., Volvo VNL Semi Truck & Volvo D13, Cummins ISX etc. Engine FAQs; Freightliner Cascadia / Detroit DD13, DD15, DD16 & Cummins ISX etc. FAQs; Kenworth T680 / Paccar MX-13, Cummins ISX etc. FAQs; Kenworth T800 / Cummins ISX Engine FAQs; Kenworth W900 / Paccar MX-13, Cummins ISX etc. FAQs; Peterbilt 379 / Cummins ISX etc. FAQs, Motor is clean as a whistle inside and oil with new oil and filter. Start motor and oil pressure is 45-50 psi and as the motor/oil warms up the pressure comes down. At 600 rpm and 220 temp on oil the pressure hovers at about 8psi and 20-22 psi at 1400 rpm. About to change oil cooler and t-stat to oil cooler. I’m ready to give up., Aug 13, 2013 · Slight oil pressure drop after only 15-20k miles after oil has been changed (clogging filters). ... help would be appreciated.I have a 2010 Peterbilt cummins 450 isx ...