Oil Pressure light

[helen&tony]

Hi Stu
The manual quotes 403-480 Kpa at 3000 RPM engine warmed to temperature and static test. This converts to 58-69 PSI . I have a pressure gauge on mine, and in normal cruising it runs 45 PSI at around 2000 or just over, which gives me a good cruising speed as per national limits here...and that pans out just right in terms of pressure if extrapolated to 3000 RPM. My engine is 200,000 plus Kilometers...and runs pretty well.
Your figures sound pretty reasonable, I would have thought!
Cheers
Helen

[stuc]

Cheers Helen, that's what I thought no concerns engine wise I would be bothered about.
Stu

[mikeonb4c]

Hi everyone, update!
Currently on start up light stays off till warm 5-10 mins idling, then light comes on and stays on till switched off. When cold light off until warmed up again.

I took an oil pressure tester to the garage tonight and checked the oil pressure.
On start up from cold, gauge was reading 30 psi within 30 seconds when idling.
Still idling, pressure increased to about 60 psi within a few minutes.
Rev engine approx. 2000 rpm and pressure increased to 68-70 psi.
Increase revs and pressure didn't change much, constant.
Left to idle, and as engine warmed up, pressure started decreasing to 35psi, I assume this is the point the light came on.
Increase rpm and pressure goes to 70 psi again.
I think these figures look pretty normal according to the figures quoted earlier. Engine is quiet for a diesel, no knocking on start up or when running.

Can anyone confirm these figures look good, average or s**t.

I bought an new switch £5.40( Euro Car Parts- same part no. as Renault)and an engine treatment from Wynns(supercharge oil treatment) which stated among many other things, maintains oil pressure at high temperatures for £4.50.
I added the treatment and ran it again to circulate it, pressure readings remained the same, and switched it off when warmed up, fitted the new switch and fired it up again.
Light off and it was still warm.
We then went home as it was getting late.
Hopefully this may have sorted it.
I will report back soon.
Hopefully this might of sorted it.

Great news Stuc. I'm pleased and not much surprised. Pressure sensor has always to be strong first suspect in my books in the absence of any obvious engine noise/symptoms. Hopefully you've found the culprit

[stuc]

Looks like the pressure switch sorted it, if only they'd checked that first eh?
Drove it from the garage straight to the bodyshop today about 20 miles, drove like a new van apart from with holes.
Very impressed, a while since I've driven a diesel one.
Hopefully the transformation will begin soon, I'm going to the bodyshop on Tuesday to get as many parts off it as I can for welding and painting.
I'll add pics as I go.

[mikeonb4c]

Looks like the pressure switch sorted it, if only they'd checked that first eh?
Drove it from the garage straight to the bodyshop today about 20 miles, drove like a new van apart from with holes.
Very impressed, a while since I've driven a diesel one.
Hopefully the transformation will begin soon, I'm going to the bodyshop on Tuesday to get as many parts off it as I can for welding and painting.
I'll add pics as I go.

Go on - you know you want one

P.S. Yes, strange they didn't check that first as it's such an obvious possibility (and simple fix)

[rita]

Looks like the pressure switch sorted it, if only they'd checked that first eh?
Drove it from the garage straight to the bodyshop today about 20 miles, drove like a new van apart from with holes.
Very impressed, a while since I've driven a diesel one.
Hopefully the transformation will begin soon, I'm going to the bodyshop on Tuesday to get as many parts off it as I can for welding and painting.
I'll add pics as I go.

Go on - you know you want one

P.S. Yes, strange they didn't check that first as it's such an obvious possibility (and simple fix)

It was suggested 5 Days ago....

Sorry if I have missed this, but have you tried a known working switch while you are waiting for a pressure test,? These switches are quite common to various vehicles/engines.(it will probably be the same type as fitted to your petrol vehicle)


Good Luck.

[mikeonb4c]

Looks like the pressure switch sorted it, if only they'd checked that first eh?
Drove it from the garage straight to the bodyshop today about 20 miles, drove like a new van apart from with holes.
Very impressed, a while since I've driven a diesel one.
Hopefully the transformation will begin soon, I'm going to the bodyshop on Tuesday to get as many parts off it as I can for welding and painting.
I'll add pics as I go.

Go on - you know you want one

P.S. Yes, strange they didn't check that first as it's such an obvious possibility (and simple fix)

It was suggested 5 Days ago....

Sorry if I have missed this, but have you tried a known working switch while you are waiting for a pressure test,? These switches are quite common to various vehicles/engines.(it will probably be the same type as fitted to your petrol vehicle)


Good Luck.

It was indeed, which is why I didn't bother posting on it at the time. What's odd is that the thought doesn't seem to have occurred to the garage (if I've understood Stuc correctly). Also (if I've understood Stuc correctly) it sounds like a new pressure switch has been fitted and that has solved the mystery.

[stuc]

Thanks folks, I did take on board the pressure switch , that's why I bought one and took it to be fitted at my first opportunity. They did think of a switch but swapped it for another one from another van which they said was ok but I thought for the cost of a couple of pints I'll try a new switch and take that out the equation.
I was a bit puzzled why they didn't source a pressure tester to test it themselves. I knew it wasn't an engine problem as the engine sounds sweet, quietest diesel bongo I've heard I think.
I need to open my own Bongo garage I think.