The oil pressure keeps going down and sets off the check guages light . This happens when i stop or slow down.

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Jul 24, 2007 - 10 posts - ‎6 authors
I have an oil sending unit problem, getting false reads,oil light on when stopped ...Forum · The Minivan Mopar Garage · 3rd Generation Chrysler Minivans: 1996-2000; False Oil light alarm .... *1999 Plymouth Grand Voyager SE 3.3L-V6 FFV, 141K miles. ... Car does not have a Tach or oil pressure guage. Oil Light Keeps Coming On
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i have a 98 plymouth grand voyager, when i slow down and

How many miles on the car? I recommend hooking up a direct reading oil pressure guage. Oil level is not the only factor on oil pressure. As an engine ages, clearances and bearings wear and the pressure falls. Using too thin oil can result in low pressure.

Fist check oil level, the sensor is a pressure switch worked by oil pressure, hopefully the sensor has gone faulty. The oil pressure needs checking, if the oil pump or relief valve has gone faulty, the engine is being starved of lubrication and is causing internal damage. It is advisable NOT to run the engine till the pressure has been checked. (hope it's the sensor)

you need a mechanical .guage to connect to your engine to tell for sure if it is a real problem. but most cases a new sending unit for the oil will fix the issue. I don't know on your exact model but a sending unit is normally cheap to replace.easy to change. and normally close to oil filter. if it doesn't fix it have a mechanic check your actual oil pressure.

Verify that the engine has the proper amount of oil. The inertia from accelerating may be moving the oil in the oil pan away from the sensor and causing it to send a signal, then when you slow the oil levels out and the sensor go's off. I've had this happen alot with a taurus that I owned. The simple solution was to top off the oil to the correct level and the sensor did not come on again (until it ran low again, had a leaky oil plug on oil pan).

Low oil pressure, you need a analoque guage to check it. Could be the oil pressure releave valve.

You could have either a bad gauge or bad oil pressure sending unit. I would start with the sending unit, it is cheaper and easier to replace.

get oil pressure test done and check for codes in PCM

bout the oil pressure gauge its normal to go up but not to high coz u might overheat, try checking the cylinderhead gasket if there is pressure coming out, replace the gasket if needed

Keep checking those Fluids. it sounds a lot like your Oil pump is taking a Slow Death March. At some point you will need to replace it.