alucardo 55 Report post Posted October 28, 2017 I have noticed my oil pressure light flicker at idle around 600 rpm. It disappears under any form of throttle input and goes away once driving even when it then again idles its not longer there. It is the first time I have noticed it. I have an oil pressure gauge that seems to indicate 0.65-0.7 (kpa x100) at idle. Car is fully warm when I saw it today. Oil is topped up. Low oil pressure I think is reported 0.2-0.3 psi unless anyone can correct me? Either way I have parked the car up and will take it to a garage, just wondering if anyone has any further info? Gauge belowhttps://www.epracing.co.uk/index.php/parts/performance-electronics/performance-gauges/645/282/gauges-d1/60mm-gauges/d1-spec-oil-pressure-60mm-detail.html Share this post Link to post Share on other sites
alucardo 55 Report post Posted October 29, 2017 I do have an oil cooler from Tuning Developmentshttp://www.tuningdevelopments.co.uk/product_info.php?products_id=2622 Do I need to run a thicker oil? Share this post Link to post Share on other sites
nikndel 509 Report post Posted October 29, 2017 Wouldn't run a thicker oil I don't know if you can plug a gauage into block to get a accurate reading or possible oil pressure switch but never heard of problems with them Share this post Link to post Share on other sites
surrey86 352 Report post Posted October 29, 2017 That's very concerning, possible some sort of intermittent blockage. You shouldn't need to run a different oil with the oil cooler. How many times has it happened? Did TD fit the cooler? I'd be getting onto them asap. Share this post Link to post Share on other sites
Deacon 1357 Report post Posted October 29, 2017 @alucardo I'm not really familiar with the scale of measurement you're using for the oil pressure. Mine is measuring in psi from the block. I see the pressure drop to about 7/8psi at the lowest when the car is hot and idles (e.g. after I've just come into the pits on a track day). I also have an oil cooler fitted and am running Millers Nanodrive 0w30 so slightly thicker than the stock 0w20. Share this post Link to post Share on other sites
alucardo 55 Report post Posted October 29, 2017 0.7 x 100 = 70 kpa which is about 10psi. 21 minutes ago, maurice said: That's very concerning, possible some sort of intermittent blockage. You shouldn't need to run a different oil with the oil cooler. How many times has it happened? Did TD fit the cooler? I'd be getting onto them asap. The oil cooler has been on the car for months with no issues at all it was more just an FYI as to what my car has on it. I will speak to Mike at TD this week anyway. It has happened twice my wife spotted it first time but it went away and the 2nd time I spotted myself so now the car is parked up and wont be used until I can get it over to a garage probably inchcape in Nottingham for now. Share this post Link to post Share on other sites
Deacon 1357 Report post Posted October 29, 2017 2 minutes ago, alucardo said: 0.7 x 100 = 70 kpa which is about 10psi. From what I've seen from the temperature and pressure gauge I have fitted, both pre and post oil ccooler, 10psi at idle when hot is not unusual and any throttle input (or the ac compressor kicking in) will quickly raise the oil pressure again. Share this post Link to post Share on other sites
alucardo 55 Report post Posted October 29, 2017 From what I have read of my guage is accurate i should be fine. However I'll be going to garage to have it checked Share this post Link to post Share on other sites
surrey86 352 Report post Posted October 29, 2017 Best of luck with it, hopefully it's the sensor. I had this happen on my wife's old 'bulletproof' Honda Civic, unfortunately for us it was more serious. Share this post Link to post Share on other sites
Kodename47 446 Report post Posted October 30, 2017 On 10/29/2017 at 11:19 AM, maurice said: Best of luck with it, hopefully it's the sensor. I had this happen on my wife's old 'bulletproof' Honda Civic, unfortunately for us it was more serious. I would agree. If it's coming on any time other than when the RPM drops well below standard idle speed then this is a good indication of genuine low pressure and possible bearing issues. Is there any form of leak around where the oil pressure sensor is? How is your oil pressure gauge plumbed in? Share this post Link to post Share on other sites
alucardo 55 Report post Posted October 30, 2017 Sandwich plate is basically where it's plumbed in. No leak I can see. No loss of oil. It's in at Toyota tomorrow so fingers crossed. Share this post Link to post Share on other sites
alucardo 55 Report post Posted October 31, 2017 Toyota think it's the oil pressure switch. The pressure seems good on the car and they have not seen the issue themselves. So replacing that and hoping for the best. Sadly part is on back order so next Monday before it gets replaced. Share this post Link to post Share on other sites
TommyC 33 Report post Posted November 17, 2017 Have you had any luck with this yet? Instinct points towards the switch... That said any rotary fluid pump will kick out low flow and pressure at low rpm. Most hydraulic pumps/oil pumps have a pressure regulating valve so they only kick out the desired pressure (a kind of bleed valve to return excess pressure to the pump inlet). There's a chance that they'll barely produce the required pressure at low rpm (idle) but just above this they'll be fine. My old Kawasaki Ninja used to have the same symptoms as you describe. It was fine when warmed up just used to flicker when idling cold unless you wound the choke on a bit. I changed the pressure switch and tried an oil system flush but never cured it... What I'm trying to say is that it's quite likely there's no problem at all, it could just be a characteristic due to the particular parts in your pump (a 1 in a million type thing). Share this post Link to post Share on other sites
alucardo 55 Report post Posted November 17, 2017 Forgot to update. I have had no recurrence of the issue since the oil switch was replaced so I'm happy and im happy that the gauge I installed is bang on according to Toyota after their testing. 1 TommyC reacted to this Share this post Link to post Share on other sites
