Question about 1997 Chevrolet Cavalier

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Oil light comes on when braking or low rpm.goes out if you raise rpm

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Stop driving the vehicle and have oil pressure tested as soon as possible. This is the most important sensor for the engine's reliablity. Good possiblity that the oil pump is going out and will need to be replaced.
If oil pressure is good replace oil sending unit

please vote if this helps

Posted on Aug 21, 2010

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Posted on Jan 02, 2017

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How to fix 1999 Chevy Cavalier with a P 1870 code


As far as the oil light on at idle an going off with more rpm's , worn engine bearings , oil pump ! How many miles on it ? P1870 Chevrolet Transmission Component Slipping Look's like you need a new vehicle !

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High temp low oil pressure light comes on after driving for a few minutes, then off when engine at driving rpm. At stop light (idle or low rpm) light comes back on. Normal driving it goes out.


You need to find out why you have low oil pressure. It is normal that as engine rpm's increase, the oil pressure will rise- the oil pump is moving oil faster. Even though your light goes out, you could still have critically low oil pressure. There should be sufficient pressure at idle to keep the light off. The light will come on when your oil pressure is almost nil- I believe for some it's as low as 8 psi. Normally, oil pressure at idle is specified anywhere from 15 to 40 psi. You would have to check specifications for your Expedition. To verify oil pressure, hook up a mechanical gauge at the oil pressure sending unit on the engine block. Check with a local shop.

The causes run from easy, simple to budget busting ruin. Low oil level, wrong grade oil, real old oil, oil leaks, internal oil leaks, worn oil pump, worn crankshaft bearings. It was pretty common on older very high mileage cars to have a fluttering oil light at stops and idle. It was time for a rebuild, or time to look for another car.

Jul 06, 2015 | 2003 Ford Expedition

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Why is my oil light coming on when my rpm goes below 1000


you have low oil pressure when the oil warms up cam barring or crank shaft barring main barring you can try a thicker oil like 15/40

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Oil light flickers when it warms up, when your stopped.


The flickering light usually indicates low oil pressure particularly at idle.Check oil quantity. How long since serviced and filter replaced. If these all good have your oil pressure tested with a master gauge. Some issues can be oil pickup slugged up or if high miler engine bearings.

Feb 25, 2013 | 2003 Kia Sorento

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Oil light comes on when braking


Your oil pump is failing.... when your engine rpm drops (when stopping) the pump and engine rpm drop to idle..(light comes on). when you accelerate (rpm's increase) the pumps start working harder and the light goes off.... I am TRULY surprised the dealer(who did you see at the dealer???) did not know this,... THIS IS BASIC STUFF!! ... I mean 090 level mechanics...

Get the oil pump replaced immediately!!!!

Jun 06, 2017 | Cars & Trucks

1 Answer

Knocking knoise under 1500 rpm


If your car has hydraulic tappets and low low oil pressure at engine speeds then it can make tapping noises. Oil pressure is needed to maintaine the tappets clearances, excessive cleaeances will produce noises.

Jan 30, 2012 | 2000 Pontiac Sunfire

1 Answer

My 1996 GMC jimmy wants to stall when I come to a stop. The RPM gage goes up & down then drops below 1000 RPMS and stalls.


I would go down to your local auto parts store and do an alternator and battery test. It sounds like at low rpms you are loosing volts. When you apply the brakes you would be supprised how much power from the engine it takes. You could also be loosing oil pressure. Check your oil level. When your engine drops low rpm, the oil pressure drops and shuts down the engine.

Jan 09, 2010 | 1996 GMC Jimmy

1 Answer

2004 Dodge Intrepid "jumps" occasionally when braking?


if your car has the 2.7 litre you have to change the oil every 5oookm or 3000 miles and use the exact grade as per the book.
the 2.7 has small oil galleries.
you have low oil pressure and or idle speed.check the rpm and it should be 700 unloaded at warm temp.if the iac controller is bad and there is low idle,really low rpm could trigger the oil light to come on and the transmission vacuum controls will be causing strange behavior.

May 04, 2009 | 1999 Dodge Intrepid

1 Answer

My 1999 pontiac grand am will idle low, but does not cut off.


Sounds like your oil pressure sensor may be faulty. Or your oil level is very low. Your engine should idle as low as 650 rpm without your light coming on.

Apr 10, 2009 | 1999 Pontiac Grand Am GT

1 Answer

Low oil pressue light at low rpm


wrong oil need 10w 40 weight caster oil is best. See right now you have thin oil and in hot weather and hot motor temp . It just gets thiner . now with 10w 40 you will bring it up a bit thus lowering the oil presser and bringing it to a happy medium .

Jul 12, 2008 | 1999 Audi A4

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