Question about 1987 Chevrolet El Camino

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High Oil pressure 1987 El Camino?

What should the oil pressure guage read when the engine is still cold and just idling? It instantly goes to 60 when the engine is started. Can/is that right?

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Not knowing what weight oil your useing but 60# cold is not bad in fact its perty near normal. Its how far it drops when it warms up is where the concern should be.

Posted on May 30, 2009

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Vw 1992 oil pressure drops when warmed up oil pressure switch was replaced still have same prblem light comes on at idle and goes off when engine speed is increased


Hook up a manual oil pressure guage and take readings of the actual amount of oil pressure in the engine. It may be that the switch is bad even though it is new. It may also be that you have low enough oil pressure at idle to trip the switch. On my 2.0 liter the low oil switch turns on at 4.4 PSI at idle but when the engine is revved up it turns on below 26 PSI. You may also have 2 oil pressure switches, one for low and one for high. They would be located very close together on the oil filter housing. Make sure you replaced the right switch.
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Should the oil pressure gauge fluctuate with speed


The oil pressure guage will fluctuate with engine RPM. At idle it should be approximately 20 lbs./sq.in, at high revs about 50-60 lbs./sq.in. Hope this helps any concerns you may have. Good luck!

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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.

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When car is cold oil pressuer is at 75 lbs when car is warmed uped it drops to 40 lbs (v6 3800) when warmed uped and give it gas it goes up to 60 lbs but when i stop it dropes to 45 lbs why is this please...


When the oil is cold it is thinner or watery and the pump moves more oil as it turns making the pressure go up. As the oil warms up it thickens and the pump moves less oil letting the pressure go down. Increasing the engine speed makes the pump turn faster, therefore it moves more oil and the pressure goes up. Changing oil grades will change the numbers somewhat, for example 10W40 will give you different readings than 5W30. I don't see any problem with the readings you put in your posting. I wouldn't be concerned until the warm idle pressure gets down to about 30 or a little lower. Hope this helps.

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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!

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Oil pressure high when engine cold. but fine when engine is warm


It is normal for oil pressure to be higher when the oil is cold. As the oil heats up, it will thin out. Since your oil pump is driven faster with the acceleration of the engine, your pressure will also increase. On a engine up to full temp, your oil pressure will probably be around 20 psi and maybe up to 60 at full load. But on a cold engine, you may see 60 psi at idle. I dont know if your high oil pressure is causing your vehicle to stall, but maybe your running the wrong weight/type of oil for your truck. If you live in a extreme cold area, you may want to look into a block heater to help warm up your engine faster.

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DIAL IN CAB COULD BE AT FAULT, NEED TO GET ANOTHER DAIL GUAGE AND CONNECT TO SENDER, IF SAME COULD BE SENDER, IF STILL THE SAME, PRESSURE VALVE IN BLOCK STICKING DUE TO DIRT OR U/S, OR AT WORSE !!! ENGINE WORN, THIS WILL BE CONSTANT IN MOST CASES, FAULT IN GUAGES ARE NORM INTERMITANT.
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