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oil light comes on when revs drop below 1000

hefer81

By hefer81,
in Engines & Forced Induction

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hefer81 Collaborator

hefer81

Posted
Posted

just recently my oil gauge stopped working which i think is just a oil pressure sendor but now my oil light comes on but only when the revs drop below 1000 rpm what do you think could be causing this my oil levels are full i have one idea which might be that the oil wasnt suited for my car and now its thinning out a bit from the service which is 1500 ago and causing it to do this ? what do you think.

Sydneykid Grand Master

Sydneykid

Posted
Posted
is it the sendor which is causing my light to come on or what

Could be, seems coincidental that the gauge stopped working and now the light is on. If it truly had zero oil pressure at idle, then the hydraulic lifters would be rattling their heads off. Since you haven't mentioned that, the most likely suspect is the sender, so time to replace it. When the gauge is working you will have a better idea of what the oil pressure really is.:)

PS; if you want to check that it does indeed have oil pressure, take the oil filler cap off while it is running and make sure there is some oil moving around the cams.

carl h Proficient

carl h

Posted
Posted

proly the sender, on my rb20 s13 install i wired up the r32 cluster into the car.

all gauges worked but my oil was always a bit weird.

it would register pressure and all but if revs dipped down it would say i had no oil pressure.

now in my s14 the only time that the light comes on is when the car is shut off (new pressure switch).

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