 | Home > Puma (Tdci) > 2.2 low oil pressure light - time to go off after starting |
 
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| UtilityTruck Member Since: 09 Jan 2014 Location: Oxford Posts: 463  
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I have no idea what is normal(generally, not just defenders
 ) but in my 2.2 the oil light takes one or two seconds to turn off after starting? 2014 Keswick Utility 2.2 |
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22nd May 2022 9:25pm |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3186  
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Yeah, me too I do not know what is normal. Maybe it is closer to 3s than 4s. But I find that a bit long.
I do not noticing this before... and I do not know if something happened during recent oil change. My oil filter is the paper element, and that has no orientation (top vs bottom), at least as far as I know. The 2.2 pump is a vane type, and I read that it should be able to build up pressure even at low rpms. Maybe this pump is a consumable? Mine has about 60k miles. Anyone knows if there is a non return valve somewhere to prevent all the oil in the galleries draining back into the sump? 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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23rd May 2022 6:32am |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3186
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DeeEss, forum member here was very kind to send me a video starting his 2.2, 3 day start, 13dC outside temperature, 5W-40 oil. I analyzed his video, and it takes just about 1.4 seconds between the tachometer needle going up, and the low oil pressure warning turning off.
The oil pressure on his Defender is reached before the alternator starts charging 
I am wondering if the temperature here is the problem... it is 26dC.. and expecting to go higher. I still use 5W-30 oil, Millers XF Longlife C1. Oil change at most 500 miles ago, so I expect the viscosity is still there. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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23rd May 2022 10:50am |
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| Ianh Member Since: 17 Sep 2018 Location: Essex Posts: 1736
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Has this 3 -4 seconds delay always been the case, or has it just started happening?
Did you use a genuine oil filter on last change, if not is the new filter a different make from the one removed ? As it could be due to the filter. In general the oil pressure sensor is just a diaphragm and a spring.When pressure builds the diaphragm overcomes the spring and an electrical condition is sent to the ECU which in turn extinguishes the dash light. If the diaphragm or spring is faulty then this can delay this process or cause false indications. So it could be a faulty sensor. A 5w30 oil is actually a 5 weight oil with additives which make the oil flow like a 30 weight oil when it reaches the right operating temperature . So if the oil temperature is hotter due to external temperature of 26dC I would have thought it would be a heavier weight than a colder engine and therefore the oil pressure would be higher at start and the oil light would go out quicker, not slower. Also have you tried waiting a few seconds longer before turning the key the last stage to crank the engine and see if that extinguishes the oil light quicker ? |
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23rd May 2022 5:15pm |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3186
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Frankly speaking, I cannot recall if it was always like that.. but I doubt. It is also not my daily, so maybe comparing more to a Golf (which low oil pressure light turns off before I even crank it
 ) I had been travelling and left the Defender garaged for about 7 weeks, and that was kind the first time I really noticed it. I thought the oil had fully drained from the system... but even in less than 12hrs parked up, it still does it.
Have not used genuine filter, I think I have used Mann filter.. could it be it? Easy to change to test
Sensor.. could be. I would actually prefer a sensor to switch off later at a higher pressure, than one that only comes on when there is really no pressure. I am afraid that most sensors switch off at too low of a pressure. I never fully understood the multigrade oil.. but I thought that a 5W30 would behave like a 30W oil at high temperature. I thought that a 5W30 oil at 100dC could still be less viscous than at -20dC. Not sure what you mean by "Also have you tried waiting a few seconds longer before turning the key the last stage to crank the engine and see if that extinguishes the oil light quicker ?" Usually I wait for the heater plugs to switch off, and then crank. At the moment though the weather is warm enough that the heater plugs do not come on at all, even after a couple of days of no use - so fur sure engine is at room temperature. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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23rd May 2022 7:14pm |
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| Big Harold Member Since: 09 Jul 2018 Location: nsw Posts: 71  
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I have an external oil pressure gauge fitted to a sandwich plate on the filter and the gauge will always read oil pressure before the light goes out.
Mark |
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23rd May 2022 8:59pm |
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| jpboost Member Since: 13 Apr 2021 Location: Gatwick Posts: 374 
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It's an interesting question.
I've always felt the light was a little bit slow to go out on my 2.2. but it's always been like that. I think I also am comparing to other more modern cars that I drive. I'll try to remember to video it and time it. It would be good to get a wider understanding of others experiences here. Can any other puma owners join in with some info? Totally agree that is it better to have a light with a reasonably high threshold to turn off, as it gives you a chance to react to something. Back in my youth when I used to drive old minis, their standard oil pressure light only comes on at less than 5psi (or something ridiculously low like that). In which case it was simply a 'game over' light that tells you it is too late and that your engine is completely ruined. |
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24th May 2022 9:53am |
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| Lodelaner Member Since: 04 Feb 2010 Location: Lambourn Posts: 621 
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Quite the opposite in practice, a thicker oil will drag and oil pressure will take longer to build up. JB @Lodelaner Instagram Youtube greenlaning and other LR related content |
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24th May 2022 2:02pm |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3186
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Unfortunately mine is early type, same as the 2.4 with the element and plastic bowl. But I guess it is also possible to T off an analogue sensor at the switch location, if there is space.. as I believe it is quite tight there.
Exactly, one or two years ago was checking a Toyota as the low oil warning light was coming on during driving. As I checked the pressure switch, it was also switching at very low pressure, also in the 5psi region. I thought that should not be right, so ordered a new one.. and the new one was also switching at that low pressure 
Recently a guy very knowledgeable on Landrovers said that the 200tdi used to suffer from camshaft bearings - reason being the 200tdi starts so quickly that there is no time to build proper oil pressure. I wonder how the 2.2 head will fair with the camshaft running directly on aluminium and double the number of valves if it also takes so long to build oil pressure  [/quote] 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black |
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25th May 2022 6:30am |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3186
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So I noticed that there is some inconsistency between the time my engine starts and when the low oil pressure light turns off.
Maybe I was over calculating, but I have timed 2.2s for the oil pressure to go off. That is almost twice as long (not as bad as my 3-4s estimate though). 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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28th May 2022 9:53pm |
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| itsdashy Member Since: 20 May 2021 Location: Reading Posts: 68 
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Mine is a 2012 with about 60k miles. I changed the pump to the new LR058095 and it made no difference to when the light went out. About 2 seconds in my case.
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2nd Jun 2022 9:03am |
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| Vitesse Member Since: 21 Mar 2014 Location: Sussex Posts: 372 
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2015 90. I use millers c1 oil. I get between 1 and 4 seconds for the oil light to go out. Random and never goes longer than 4 secs. 2015 90 XS Santorini Black
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2nd Jun 2022 9:18am |
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| jpboost Member Since: 13 Apr 2021 Location: Gatwick Posts: 374
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Since this thread started, I've been keeping an eye on what mine does.
It's pretty consistent at around 3 seconds, but occasionally it's about half that. I've not been able to work out any pattern to when it's quicker, but it probably does it about 1 in 20 starts. I also take some comfort from the other posts here that the 3-4 second range is common amongst other owners. |
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2nd Jun 2022 10:15am |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3186
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Thanks all
As Vitesse said, mine is a bit random too. I had situations where I shut down the engine and start it again only a couple of minutes later which took longer for the light to go off than say after starting the engine after a couple of hours that it was switched off... Very unpredictable. I also use Millers C1. 4seconds seem to be eternally long when you know that bearings are not being protected by a proper film of oil. I will try a different oil weight on next oil change. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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2nd Jun 2022 10:18am |
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