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Old 05-05-2013, 10:23 AM   #1
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Oil light comes on under hard braking... ?

So I was taking her for a bit of a spirited drive the other night, when I saw a decently long unoccupied strip. I accelerated up to maybe 85-90 (gently) and than proceeded to brake lightly and than fully, still in a straight line. The ABS did not kick on, and the brakes (as always) were very firm, almost like I had to stand on them to come close to it (checked the fluid and had the brakes bled already and they are the same, so I haven't been worried about the firmness).

I noticed when braking hard my oil light came on. It came on no longer than 2 seconds. Me being me, I immediately pulled over and turned the car off, as usually oil light=near death. I waited a good 30 seconds, checked the oil, it was fine. I waited another couple minutes, checked again, and drove home with no problems.
I checked it first thing in the morning cold and it was still in the normal range. I recently changed the oil, and I couldn't get it to happen again under 30-40 MPH braking, or in a sweeping corner.

I went out again, after checking oil for the 5th time in two days to see if it was a fluke, but nope. It happened two more times, but only at fairly high speeds (75mph+) and it only came on for a few seconds with heavy braking.
Search online only turned up low oil issues. Time for a new oil sensor?

Dropped the pan for sludge after replacing the turbo, it was pretty clean. I had a 300zx that the light would come on during long sweeping corners, but that was to tell me I had burned through oil and needed .50 qt (engine was not in the best shape).

No CEL's or anything.

Should I be worried, or is this common with a '97 ng900?
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Old 05-05-2013, 02:43 PM   #2
 
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Yep....new oil pressure sensor...
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Old 05-06-2013, 08:01 PM   #3
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Replaced oil pressure sensor with known working one, same problem...
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Old 05-06-2013, 08:20 PM   #4
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Oil level a little low and it's sloshing away from the pickup tube?
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Old 05-06-2013, 11:21 PM   #5
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Add moar oil.
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Old 05-08-2013, 10:24 PM   #6
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Did though, been checking it more than religiously, before and after each drive.
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Old 05-09-2013, 04:44 AM   #7
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What grade of oil do you use ?
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Old 05-09-2013, 04:27 PM   #8
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5w40 castrol synthetic
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Old 05-09-2013, 05:51 PM   #9
 
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5v40...That should be fine.....
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Old 05-13-2013, 04:48 PM   #10
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idk what else it could be. It more recently started doing it now under all hard braking, regardless of speed. The giant triangle and an exclamation point comes on as well now (usually a second after the oil light though). Again, no issues when normally driving.
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Old 05-14-2013, 06:56 AM   #11
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Check your oil when cold, now if it's too low you will get these dash lights, but should also get lifter ticking as well, are you getting this? When you were changing the oil could you have dropped something down the dipstick hole, wild guess, I know? When oil is old it can be thick as hell thus masking all sorts of issues, also when you changed the oil you can dislodge all sorts of old crap which can clog the screen, screw up the oil pump, etc... Hopefully it's not something like that, might be time to drop the pan. Check wiring to oil pressure sender.
Good luck.
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Old 06-01-2013, 08:03 PM   #12
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Checked it when its cold, first thing in the morning, every day since. No lifter ticking audible when at idle, or high revs. I am pretty religious about making sure nothing gets dropped in, but maybe I'll just try a different brand of oil ??? Maybe its high enough miles it may need something different (182.5k). I dropped the pan last oil change (changed the turbo), but maybe when filling it it could have dislodged something. But it was fine for about 3 weeks to a month. I will check the wiring to it. Seemed like it was in good condition at the plug itself, but I'll take a minute to follow it around.
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Old 06-29-2020, 02:40 AM   #13
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I know it's been a while, but have you found a solution?
I'm having the same issue; oil is topped up (and was recently changed), turbo has been replaced and the oil pickup has been cleaned.
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