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I have no oil pressure idling but over 50 at 33oo rpm or more.and the radiator stays cool

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Oil pressure gauge

Posted on Oct 27, 2012

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Posted on Jan 02, 2017

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SOURCE: Oil Pressure Light Comes On after 10 min of Driving

You may not have put the right amount of oil in your car, your oil pressure sensor could be faulty, or you may have a leak.

By revving your engine, you're increasing the pressure and thus turning off the light and making the sensor think that it's at the correct pressure.

Posted on Sep 08, 2009

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SOURCE: Rough Idle, oil pressure tanks, kills jeep.

If your vehicle was purchased in the USA, it is against federal law for a dealer to sell it without a cat. If you are somewhere else, I have no idea what laws are. I have no idea what "cruising with the clutch" means.
Your oil pressure dropping may only show that at the same time the engine has stalled or is turning so slow that you are not making enough oil pressure. I would check the throttle position sensor, map sensor and idle air control valve for proper readings and operation, also check for minor vacuum leaks. It seems that your idle is too low and allowing the engine to stall. There are other things that can cause this besides what I mentioned but those are the main ones I'd check first. Testing can be done with a decent multi meter and using a chiltons or haynes manual as a guide.
Control systems need testing to get a proper diagnosis...That's one thing I can't do from here.
Do the testing and likely you will find the problem. Many larger parts stores will do a free code scan...that too is helpful.
Good luck

Posted on Oct 04, 2009

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SOURCE: (2004 Stratus 2.7) The oil light stays on until

This same thing happened to me it was the oil sending unit that needed to be replaced. It's an easy fix but you have to take off the heat shield to get to it.

Posted on Nov 05, 2009

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SOURCE: 2001 2500hd duramax idle surge. doesn't do it all

Well there are quite a few things that casue a "surge" in a common rail diesel. You will need to check injector flow rates (scanner only). Fuel pressure regulator for pulsing (scanner only). Supply side fuel system for air leaks (seeing if it is sucking air into the system).
My bet would be the injectors, because you say the rpms aren't going up and down, which is usally what happens when the regulator goes bad, and when you **** air into the supply they have an extended crank. Report back with your findings.

Posted on Nov 24, 2009

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SOURCE: 94 f350 7.3l turbo diesel looses oil pressure as rpm increase

Before you spend money on a new gauge. Get an oil pressure testing gauge for $20 , remove the oil pressure sending unit and test the oil pressure. If oil pressure at idle and 3000 rpm's is a-ok via spec's ( big money repair items) then its either the gauge a clogged or defective sending unit or the circuitry. (little money repair items)
You can also have this done at a repair shop.

Posted on Apr 26, 2010

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I have a 1985 mack r model with a mechanical 283 engine. Truck is over heating and has engine oil in cooling system. Last night I rebuilt the oil cooler and flushed the cooling system two times. Last night...


Sounds as if you may have blown head gasket or cracked head. Try using a pressure gauge unit on radiator to see if pressure goes down, or try looking in radiator while running to see if bubbles appear. Either way, bad luck I'm afraid.

Feb 26, 2015 | Cars & Trucks

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How do i fix the low oil pressure issue im having. When i drive, the temp stays normal at 210 but when i idle, it goes up to 260. I was told the oil pressure is low and i needed a new engine


Your engine is overheating, which isn't directly related to oil pressure. I would take the S10 to a reputable/trusted mechanic and have him perform the following tests.
Compression Test Leak Down Test Coolant System Pressure Test Inspect Oil for Moisture (you can do this one, remove the dipstick, does the oil on it look like milk? If it looks like milk it means there is water/coolant in the oil, a sign of a blown head gasket. However not all head gaskets dump coolant into the oil when they blow) Inspect Clutch Fan for proper operation
The mechanic will know what those mean, It sounds like your head gaskets may be blown, which is why the engine would be overheating. Also if the Clutch Fan isn't working properly, it won't pull enough air through the radiator to keep the engine cool at an idle or while sitting still.
If the Head Gaskets are blown, it doesn't necessarily mean you need a new engine.
One other thing to note, when an engine overheats, the oil breaks down and no longer works as good as it used to.

Aug 24, 2011 | 1993 Chevrolet S-10 Blazer

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1998 cadillac catera oil pressure light come and and the car overheats when sitting in traffic....


CHECK ENGINE OIL LEVEL SHOULD BE ON THE FULL MARK ON ENGINE DIP STICK. IF OIL LEVEL IS LOW.LOOK FOR OIL LEAKS UNDERNEATH CAR.IF ENGINE NOT LEAKING OIL CHECK OIL PRESSURE SHOULD BE 22 PSI @ 900 RPM IF NOT OIL PUMP FAULTY OR YOU HAVE WORN ENGINE BEARINGS.IF OIL PRESSURE OKAY YOU COULD HAVE FAULTY OIL PRESSURE SENDING UNIT. CHECK COOLING FAN TO SEE IF CAR COOLING FANS RUNNING WHILE ENGINE OVERHEATING.IF NO CHECK COOLING FANS RELAY AND FUSE IF ALL IS GOOD ENGINE COOLANT TEMPERATURE SENSOR FAULTY. IF COOLING FANS RUNNING WHILE ENGINE OVERHEATING.HAVE RADIATOR AND ENGINE FLUSHED OUT. REPLACE THERMOSTAT AND RADIATOR PRESSURE CAP.

Jun 12, 2011 | Cadillac Catera Cars & Trucks

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2.8l v6 in a s10 blazer. no head gasket problems thus far. wondering why my oil pressure gauge fluxuates? minor rpm change while oil pres guage does its thing why?


Oil pressure always changes with rpm.
At idle you should have around 10 psi, and it should max out at high rpm around 50 psi or so.
You not only can't have as much pressure at idle, but you don't need it either.

Jun 06, 2011 | 1989 Chevrolet S-10 Blazer

2 Answers

CAN A OIL PRESSURE GO DOWN TO 25 WHILE IN GEAR AND 40 WHILE HITING THE GAS IT SHOLD STAY AT 40 45 NORMALY NO MATER WHAT RIGHT ITS A 2000 DENALI 4X4 I DO HAVE ISSUES WITH 02 SENSORS IS THAT THE REASON WHY


Oil pressure is not constant, while idiling the pressure is less than when accelerating. Usually when the oil pressure gauge fluctuates it is a sign of low oil level.

Feb 04, 2011 | 2000 Chevrolet Tahoe

2 Answers

1989 VW cabriolet oil pressure warning light on at low rpm and idle. Oil pressure gauge shows sub 1 bar at same time. Is this a sending unit problem, or an oil pump problem? Where are sending units? ...


The Oil light is a dreaded sight, especially at idle. Usually if an oil pump fails, it dies, the same with an oil pressure sender. I had the same problem with a 97 neon, at idle the oil light comes on... (192,000 miles). If the oil used at the oil change was a thinner viscosity than what was in there, that could cause it. If not, it could be bearings going bad on the motor creating a low pressure situation. I fixed it by going to a thicker viscosity, from 5w-30 to 10w-30, and in a week the light went off... this was 7 months ago. Just food for thought, hope this helps.

Sep 26, 2010 | 1989 Volkswagen Cabriolet

2 Answers

Oil pressure guage pushes to 80 when not idling.


In an engine in good condition, oil pressure is a function of RPM. Higher rpm, higher pressure. Whne coasting downhill, in gear, the engine rpm will increase, hence, the oil pressure will go up, as required, and as expected.

There is nothing wrong with your engine, unless the oil pressure goes excessively high under any regime. Low oil pressure is a sign of low rpm, or under load, a sign of worn parts.

Nov 22, 2009 | 2000 Jeep Wrangler

1 Answer

Oil light on at stop


engine oil pressure may be low remove oil pressure sending unit and install a pressure gauge check for pressure while warm if pressure is ok replace oil pressure sending unit oil pressure at idle should be between 5-15 psi at min

Nov 17, 2009 | 2006 Dodge Stratus

1 Answer

Where is the oil level sensor located? oil guage wiggles between 40 & 60 at idle and stays on 60 on the road.


That's not oil level you see on the gauge -- that is oil pressure in pounds per square inch (PSI). It is normal for the pressure to fluctuate when the engine RPM goes down. If it stays on 60 PSI on the road, you are very lucky -- that is excellent oil pressure!

May 28, 2009 | 1999 GMC Sierra

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