I have a 1995 chevy K1500 4x4 5.7L that is having some oil pressure gauge problems. every time i take i sharp right hand turn my check gauges light comes on and my oil pressure gauge drops to 0 then 5 to 10 sec later it works fine. there was one time that it stayed at 0 for a couple mins. can anyone help me out with this one and if this is a bigger problem than i think some info would be much appreciated thanks
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It depends on what the problem is. It could be a problem in the wiring, or you could really have low oil pressure. If the engine oil level is up to the full mark, I would check the pressure switch and the wiring. You may need to connect a mechanical gauge and drive it to make sure the pressure is normal.
spend the 12 dollars and get a universal mechanical oil pressure gauge, remove the oil sending unit on truck and screw new gauge into and start truck. Does it read pressure? I know people will say just replace oil sending unit but i like to visually check for a true oil pressure than to trust a light, at least you will know what pressure your motor has. if you have pressure then replace the sending unit. Most of the time when the sending unit goes bad your oil pressure gauge in the truck will run at 80 psi all the time. Since you have a light the sending unit just says it isn't getting pressure which turns a light on. So be safe and do as i suggest, if there is no pressure at the mechanical gauge then i hate to say it but you may have a bad oil pump. I honestly just think you have a bad sending unit,if you want just replace it and if lights go off thats good, but you still don't know what the pressure is and if you feel comfortable with this then do so.
first check the oil level if its good then change the oil if you hav'nt done so all ready and add some LUCAS oil stablizer this may help alot if not then the oil pump is most likley going bad and needs to be replced before the engine lacks oil and cause the engine to seize.
the oil pressure sending unit must be defective - it should be located close to oil filter - if another sending unit is purchased you can compare the two - most sensors only plug up one way - the light should be working thru ground - light may not come on if sending unit is unplugged as a test