alxns7 Posted January 28, 2016 Share Posted January 28, 2016 Ok so my brother just told me about how the oil pressure warning light went on once. The bad red one. It happened when doing a pull on the motorway, it went on for a couple of seconds, and then turned off when he left off the throttle. The car has an oil pressure gauge but he's unsure of what was the pressure reading when it happened. The oil level, pressure, and temperature are otherwise normal. Should we be worried? Quote Link to comment Share on other sites More sharing options...
Scott Posted January 28, 2016 Share Posted January 28, 2016 Is the red one oil pressure? I always thought it was the orange one. If you're referring to the warning triangle in the middle your brake fluid needs topped up, not your oil. The most common problem with oil pressure is actually the oil level. If your oil level is fine and your brake fluid level really is fine then it would suggest your oil pump is worn out. Quote Link to comment Share on other sites More sharing options...
alxns7 Posted January 28, 2016 Author Share Posted January 28, 2016 Yep it was definitely the red oil pressure warning! Orange is oil level. Quote Link to comment Share on other sites More sharing options...
Scott Posted January 28, 2016 Share Posted January 28, 2016 That's definitely not a good sign then. That would likely suggest oil pump unfortunately. Quote Link to comment Share on other sites More sharing options...
alxns7 Posted January 28, 2016 Author Share Posted January 28, 2016 (edited) Ok thanks we will keep an eye on it. Also something just came to my mind.. we did a video of a pull once. On the video we noticed the oil pressure gauge jumps from steady 8 bar to over 10 really quick. Just when the engine hits 5900 RPM. I've never thought of checking that again but I will take a look at it Edited January 28, 2016 by alxns7 (see edit history) Quote Link to comment Share on other sites More sharing options...
Scott Posted January 28, 2016 Share Posted January 28, 2016 That's likely because the oil hasn't been warmed up. You should only see around 25-35psi at idle when fully warmed up. 10+bar is normal with cold oil. Mine idles at that to begin with lol. Quote Link to comment Share on other sites More sharing options...
alxns7 Posted January 28, 2016 Author Share Posted January 28, 2016 No the oil was definitely warm. I will try to post more exact values but I suspect a faulty gauge pressure sensor (on the sandwich plate) Possibly the engine pressure sensor is faulty as well because it happened really only once at full load Quote Link to comment Share on other sites More sharing options...
Mike2JZ Posted January 28, 2016 Share Posted January 28, 2016 Get an oil pressure tester kit from ebay. Should be less than £20 delivered. Plug that in to cross check your pressure Quote Link to comment Share on other sites More sharing options...
TheTurtleshead Posted January 29, 2016 Share Posted January 29, 2016 The oil pressure light is orange. The oil level warning light is red? Sure it's that way round. Quote Link to comment Share on other sites More sharing options...
Scott Posted January 29, 2016 Share Posted January 29, 2016 The oil pressure light is orange. The oil level warning light is red? Sure it's that way round. That's what I thought. I'm too lazy to go out to the garage to check though Quote Link to comment Share on other sites More sharing options...
TheTurtleshead Posted January 29, 2016 Share Posted January 29, 2016 That's what I thought. I'm too lazy to go out to the garage to check though Having the same problem right now Quote Link to comment Share on other sites More sharing options...
jza800 Posted January 29, 2016 Share Posted January 29, 2016 The oil pressure light is orange. The oil level warning light is red? Sure it's that way round. wrong.. Oil pressure = red light Oil level = yellow Quote Link to comment Share on other sites More sharing options...
Scott Posted January 29, 2016 Share Posted January 29, 2016 Yip quite correct It's the way it should be to be fair. Oil level doesn't matter so much so an amber warning is fine. Oil pressure means bye bye engine so it's important that it carries a suitable colour warning Quote Link to comment Share on other sites More sharing options...
Nic Posted January 29, 2016 Share Posted January 29, 2016 wrong.. Oil pressure = red light Oil level = yellow [ATTACH=CONFIG]208542[/ATTACH] Correct. If the red oil pressure light has come on there could already be damage done. I would not be starting/driving the car until you've investigated the problem. Quote Link to comment Share on other sites More sharing options...
and1c Posted January 29, 2016 Share Posted January 29, 2016 Like Nic says. It is not a 'leave and investigate' issue. If it isn't the sensor it could mean there is damage done already... definitely needs full inspection. Might be worth dropping the oil and checking for any metallic particles, then cross check oil pressure as someone above has said... Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted January 29, 2016 Share Posted January 29, 2016 Yip quite correct It's the way it should be to be fair. Oil level doesn't matter so much so an amber warning is fine. Oil pressure means bye bye engine so it's important that it carries a suitable colour warning I would disagree, as oil level is something you should always respond quickly to. it saved my engine when the front main seal failed on my car and dumped most of the oil on the road and underside of the car, and if I hadn't noticed the level light, or kept driving it would have definitely be by by engine, instead of just replacing the pump and seal. So needless to say apart from the normal level light I added a super bright LED to the circuit, it easy not to notice a drop in oil pressure as well, so a gauge with a warning buzzer is also a very good idea. Quote Link to comment Share on other sites More sharing options...
Scott Posted January 29, 2016 Share Posted January 29, 2016 I would disagree, as oil level is something you should always respond quickly to. it saved my engine when the front main seal failed on my car and dumped most of the oil on the road and underside of the car, and if I hadn't noticed the level light, or kept driving it would have definitely be by by engine, instead of just replacing the pump and seal. So needless to say apart from the normal level light I added a super bright LED to the circuit, it easy not to notice a drop in oil pressure as well, so a gauge with a warning buzzer is also a very good idea. Oh theres no doubt it's important. However oil pressure light on means you have a second to respond. Oil level light means you can safely pull into the side of the road to see what's what. Quote Link to comment Share on other sites More sharing options...
alxns7 Posted January 29, 2016 Author Share Posted January 29, 2016 Correct, oil pressure light goes on, the engine has to be turned off, and transmission put in neutral. Hence the red colour. Really bad oil level would trigger the red oil pressure light. But it would still come on before this happens, leaving you time to top up Just a question, how accurate is the oil reading with a sandwich plate? I read it is quite accurate, clearly oil pressure is uniform through the whole engine..? I will double check but I am pretty sure the pressure readings are within toyota's specifications: 49 kPa at idle, 324-579 kPa at 4000 RPM (3000 RPM on the 2JZ-GE) Thanks for the replies Quote Link to comment Share on other sites More sharing options...
TheTurtleshead Posted January 29, 2016 Share Posted January 29, 2016 Clearly too many years of being around racing cars with big orange oil pressure warning lights for me! To be fair if either comes on you should be concerned. Surprising that the OP has had a problem with oil pressure on a pull. Was the car properly up to temperature and does it have a thermostatic sandwhich plate? Quote Link to comment Share on other sites More sharing options...
alxns7 Posted January 29, 2016 Author Share Posted January 29, 2016 It is surprising isn't it! The oil was definitely warm. The car has no external oil cooler, the sandwich plate is just there for the gauges. Also something I've been willing to do for a while is an oil analysis. Not too expensive and well worth the money for all the information it gives. I will post the results. Quote Link to comment Share on other sites More sharing options...
rider Posted January 29, 2016 Share Posted January 29, 2016 Get an oil pressure tester kit from ebay. Should be less than £20 delivered. Plug that in to cross check your pressure I've fortunately only ever seen the oil pressure light come on any car at idle only and its always been the sender unit that's failed. You can pick up new senders for around £8 so I'd start there first rather than buying a gauge to check the actual pressure. Quote Link to comment Share on other sites More sharing options...
alxns7 Posted February 2, 2016 Author Share Posted February 2, 2016 Yeah that would be cheaper. Anyway I should already have an idea with my sandwich plate oil pressure gauge Quote Link to comment Share on other sites More sharing options...
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