Question about 1992 Toyota Corolla

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Oil light comes on when engine warm and only when idling

What is the best way to get access to the oil pressure switch

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!- First check the quilty of the engnie oil.
2- then replece the oil pressure switch side engine block just near oil filter if the problem still.
3- mybe engine problem if oil pum is worn out that means not enough pressure.
4-it can be also enine bearing and camshaft bushes.

Posted on Dec 02, 2008

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3 Answers

Oil light on after engine warm-up on idle


this means a mechanical gauge test is required to check actual pressure warm idling if low below 20 psi then the oil pressure pump relief is stuck open or engine bearing are worn

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My 89 honda accord oil light comes on when engine is warmed up and stays on and idles high


Could be more than one problem.
The oil light staying on when the engine is warmed up could be a problem with the oil pump or engine bearings.
Its possible the switch for the light is faulty.
You can replace the switch or have the oil pressure checked with a mechanical gauge at a shop.
The high idle could be several things, but I would be more concerned with the oil light.

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OIL PRESSURE LOW...i CHANGED OIL AND PRESSURE IS FINE UNTIL JEEP GETS WARM AND WHILE IDLEING PRESSURE DROPS TO ZERO AND CHEK GUAGE LIGHT COMES ON.dID THE SAME BEFORE OIL AND FILTER CHANGE.


How many miles are on the engine? Have you tried to replace the oil pressure switch? is the engine making any type of noise due to low pressure reading?

Sep 07, 2011 | 2001 Jeep Grand Cherokee

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I have a 01 cavalier and at idle or low rpm the oil warning light comes on and then turns off when you step on the gas. this only happens after the engine is warm. whats causing this?


You might get lucky and have a faulty oil pressure switch.More likely though,the oil pressure is dropping at idle due to a worn engine.Replace the switch and hope for the best.If the trouble persists,you'll need to do engine work

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What is the make/model of the Jeep? What engine? Are you losing pressure completely or is it just low at idle? Many older Jeeps show little oil pressure at idle when the engine is warm. If you aren't hearing rattling like you are actually losing oil pressure, and the pressure comes up when you accelerate, you are probably OK.

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1992 honda accord ex 2.2L \r\nStarts. and run s OK till engine warms-up then it lacks power and idles rough? Service engine (yellow light) comes-on after engine gets warm! Red oil pressure light also...


Hi. This issue has several causes, but the oil light indicator is a strong sign of low pressure in the engine. This will cause the engine lubrication rate to drop, thus, producing a illuminated oil light, and erratic Oil pressure readings. The necessary actions are to have a manual oil pressure test ran on this engine, asap. When running a manual oil pressure test, you will discover if the true oil pressure is low, or normal. If the test proves that the oil pressure is, indeed, low, this will confirm that the Oil pump is suspect.

Now, if the true readings given during the manual oil pressure test are indicating that the pressure is normal, this will be the result of a failed sending unit(oil pressure switch). Although the oil pressure is suspect, this is not your only issue here. There seems to be a abnormal compression rate, present. This is causing the rough idle, and erratic RPMs. I recommend to administer a engine block compression test, as well. This test will discover if , indeed, there are issues within the cylinder heads, and block structure, such as a worn head gasket, cylinder wall issues, and cracked block. Normally, these issue will send signs, like white, or gray smoke out the tail pipe, or discolored oil. It will, also, promote erratic RPM ratings, and a rough idle. Have the oil pressure test, and engine block compression test ran, asap.

Once the test are administered, you will be able to isolate the actual problem areas, more accurately. Check the spark plug wire sets, and ignition assembly for faults, also.

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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.
You want to get this straightened out quickly as VW engines are very unforgiving when you put off repairs. Hope this helps.

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Hi just bought i999 1.6 audi a3 and it has started to pulse when idling and oil light comes on when engine reaches nornal temp what could this be please help


If by pulsing you mean that the idle is fluctuating up and down, this is caused by oil/sludge build up in the throttle valve. To rectify this remove the intake pipe at the throttle valve. Use engine cleaner/degreaser on a rag to clean out throttle valve around throttle butterfly. Open butterfly manually to assist access. The oil pressure light coming on is usually caused by the oil pump pick up becoming blocked by carbon and sludge in the oil sump. If you have a suitable oil pressure gauge, check the oil pressure at the oil switch. Oil pressure should be 3.5- 4 bar at 2000 rpm at operating temperature. If pressure ok, Pressure switch may be faulty. If pressure low you will have to remove oil sump and clean out or replace oil pump pick up. If not done, may result in major engine damage. Sludge and carbon build up caused by oil not being changed often enough. Best to use a synthetic oil.

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1 Answer

Oil light comes on only when stopped or in park but idling


when engine is warm if its full of oil and you dont hear engine noise its our oil sender (OIL PRESSURE SWITCH) that defective change it and its a fixya thanks pierre

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