Oil Pressure Warnings - Page 2

TourerSteve · 3rd March 2022, 11:24

The pressure readings for the 1.8 turbo are 4 bar to 4.2 bar at a 1000 RPM and doesn't differentiate between a hot or cold engine , That is the only figure I can find mentioned for that engine
Was your 30 psi (2 bar ) taken at 1000 RPM or at idle as would suggest with a warm engine it may well drop to around there at idle . ?
Does the oil pressure keep dropping down lower than 30 psi (eg In the time it has been taking for you oil light to illuminate) or is it holding 30 psi as the oil pressure switch is set at less than 10 psi (0.2 to 0.6 bar) and unless faulty wouldn't illuminate at 30 psi
If your oil pressure is falling lower , obviously your back to checking the strainer and the oil pump

JamieR07 · 3rd March 2022, 12:47

Quote:

Originally Posted by TourerSteve

The pressure readings for the 1.8 turbo are 4 bar to 4.2 bar at a 1000 RPM and doesn't differentiate between a hot or cold engine , That is the only figure I can find mentioned for that engine
Was your 30 psi (2 bar ) taken at 1000 RPM or at idle as would suggest with a warm engine it may well drop to around there at idle . ?
Does the oil pressure keep dropping down lower than 30 psi (eg In the time it has been taking for you oil light to illuminate) or is it holding 30 psi as the oil pressure switch is set at less than 10 psi (0.2 to 0.6 bar) and unless faulty wouldn't illuminate at 30 psi
If your oil pressure is falling lower , obviously your back to checking the strainer and the oil pump

So as i was sitting there reading it, the pressure dropped to just under 2 bar at 1000rpm

However the light hasn't come back on again, and its running fine.

I'm wondering if it was a dodgy sensor, I'll keep an eye and if it comes back on I'll recheck things - for clarification i have replaced the sensor now

Thank you for all the information you've given me! You've been fantastic

SD1too · 3rd March 2022, 14:42

Quote:

Originally Posted by JamieR07

So I've pulled the oil pressure sensor plug off and it's covered in oil, woth a small leak of oil from sensor

Well done Jamie! A leak may well have lowered the pressure.

Quote:

Originally Posted by JamieR07

I'm wondering if it was a dodgy sensor, I'll keep an eye and if it comes back on I'll recheck things - for clarification i have replaced the sensor now.

Fingers crossed!

Simon

stocktake · 3rd March 2022, 16:27

Quote:

Originally Posted by stocktake

I would suggest the sensor is the problem.

Quote:

Originally Posted by JamieR07

I'm wondering if it was a dodgy sensor, I'll keep an eye and if it comes back on I'll recheck things - for clarification i have replaced the sensor now

Thank you for all the information you've given me! You've been fantastic

Then I claim the points for this one

oruba · 3rd March 2022, 23:29

Quote:

Originally Posted by SD1too

Hi Jamie,

The digital coolant temperature display is part of the instrument pack diagnostics. It's test number 7.0. Quick reactions are needed when setting it up so don't worry if it takes you a few attempts.

Expect the temperature to be in the low nineties when driving, rising no higher than 104˚ when the car is stationary.

The "demist test" is as follows:

Start the engine from cold.
On the air con./heater control panel press the windscreen demist button. The blower will start at full speed.
Get out of the car and walk to the radiator grille. Is the fan running continuously? It should be.

These are simple tests to rule out common problems before you dive in with spanners flying everywhere.

For your 1.8T engine, RAVE gives the oil pressure as 4.0 - 4.2 bar (58 - 61 psi) at 1,000 rpm. There's also a low oil pressure switch which could be on your list.

Simon

I'm on the verge of installing a digital oil pressure gauge. What should I read for oil pressure values 2.5 V6?

SD1too · 4th March 2022, 07:30

Quote:

Originally Posted by oruba

I'm on the verge of installing a digital oil pressure gauge. What should I read for oil pressure values 2.5 V6?

Hi Özcan,

RAVE says a minimum of 1.0 bar at idle (defined as 750 ± 50 rpm) and 3.0 bar at 3,000 rpm.

Simon

oruba · 4th March 2022, 21:42

Quote:

Originally Posted by SD1too

Hi Özcan,

RAVE says a minimum of 1.0 bar at idle (defined as 750 ± 50 rpm) and 3.0 bar at 3,000 rpm.

Simon

Thanks a lot mate.

RhinoTourer · 7th March 2022, 20:03

My 1.8 Turbo had the oil light after 15 minute issue as well, mine was dropped liners combined with a MLS gasket.

Binned the engine as I knew it towed a caravan measured different heights over the liners.

If the issue comes back pull the plugs and look to see if any of them are burning oil, if the liner has dropped it will lose oil pressure but it will also burn a lot of oil.

Fingers crossed for you its just the sensor

trikey · 7th March 2022, 20:21

What are these bar you speak of? What lever happened to psi!!

SD1too · 8th March 2022, 07:41

Quote:

Originally Posted by trikey

What are these bar you speak of? Whatever happened to psi!!

I agree Andy. I used bar in my reply to oruba only because he lives in Turkey and it would probably save him a conversion calculation.

Now I'll

Simon

3rd March 2022, 11:24	#11
TourerSteve Loves to post Rover 75 Tourer Join Date: Jul 2016 Location: Withernsea Posts: 436 Thanks: 43 Thanked 290 Times in 167 Posts	The pressure readings for the 1.8 turbo are 4 bar to 4.2 bar at a 1000 RPM and doesn't differentiate between a hot or cold engine , That is the only figure I can find mentioned for that engine Was your 30 psi (2 bar ) taken at 1000 RPM or at idle as would suggest with a warm engine it may well drop to around there at idle . ? Does the oil pressure keep dropping down lower than 30 psi (eg In the time it has been taking for you oil light to illuminate) or is it holding 30 psi as the oil pressure switch is set at less than 10 psi (0.2 to 0.6 bar) and unless faulty wouldn't illuminate at 30 psi If your oil pressure is falling lower , obviously your back to checking the strainer and the oil pump Last edited by TourerSteve; 3rd March 2022 at 12:10..

7th March 2022, 20:03	#18
RhinoTourer Regular poster ZTT 1.8 T Join Date: Aug 2014 Location: Wiltshire Posts: 31 Thanks: 4 Thanked 5 Times in 4 Posts	My 1.8 Turbo had the oil light after 15 minute issue as well, mine was dropped liners combined with a MLS gasket. Binned the engine as I knew it towed a caravan measured different heights over the liners. If the issue comes back pull the plugs and look to see if any of them are burning oil, if the liner has dropped it will lose oil pressure but it will also burn a lot of oil. Fingers crossed for you its just the sensor __________________ Exhaust Bushes Replaced. (Twice ) Fuel Sensor Wires Repaired. F.O.C Fitted. Washer Bottle Pump & Grommet Replaced. (Twice ) HT Leads Replaced. Starter Motor Earth Repaired. Replaced Engine - Liners dropped Air Con Self Service X2 Coil packs Replaced Full Clutch kit. Rear Brake cylinder Replaced Radiator replaced. ODBII Scanner available.

7th March 2022, 20:21	#19
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,772 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	What are these bar you speak of? What lever happened to psi!! __________________ Lest we forget..