Club 80-90 Forums

May be just a weak oil pressure switch, which is fairly cheap to replace £3-£4 from brickwerks or loose connection. Have you checked the oil level? Once the engine is hot the pressure will drop and if you're a little low on oil it could trigger the pressure switch at low revs. Try all these first before worrying about the oil pump..

Mark

Well Em, if it's started burning oil this will affect the oil pressure(particulary when hot) What oil are you using? because semi synthetic oils will be thinner than mineral oils when hot (thus triggering pressure switch)..But it does sound like an engine rebuild is on the books...start saving.

Mark

EM, the first thing to do is get it to your local friendly T25 guy (whoever that is in your area) and get him to put his oil pressure measuring gauge on it. This only takes a few minutes and will tell you right away whether the problem is serious or not.

A clogged oil filter can cause this, how old is that ? (always use one from the mail dealers made by "MANN" = not at all dear)

Also, if you do not have to top it up often (depending on how many miles you do each month of course) then the oil consumption should not be a problem. These engines DO use a bit of oil, being old and of an old design and often require a lil top up every couple of thousand miles.

Thanks folks, all brilliant advice - and Ghost - I will get it pressure checked if it does it again.

Just been out for the lunchtime drive.....and not LED. I mean nowt. Not on ignition or anything!!! grrrrrrrrr so connections first

interesting the note about the idle speed....I'm guessing its a little lower than 1000...and resting my foot on the pedal is bringing it up to that or thereabouts. But tacho not back on yet, so only guessing.

See what it does on the way home....

Thanks again all.

Em
x

Ghost - have spoken to my friendly VW guy....pressure testing not an issue! As the switch is removed to do it, think I will purchase a new one from the works of brick, and slap a new switch in. Shall take the hankies just in case, and carry the AA card at all times. Shall add the samaritons to the speed dial on the mobile There, think that's the prep done!



OMG - Brickwerks has 4!!! Gonna have to look and see what mine is......any ideas what it should be....guessing an A reg panel van (originally 1.9dg) won't have the DOP buzzer of doom?

Em
x

ermie571 wrote: Just been out for the lunchtime drive.....and not LED. I mean nowt. Not on ignition or anything!!! grrrrrrrrr so connections first

This could be good news as your Oil light issue is quite possibly related to this

The usual way a professional T25 mechanic fixes that, is by hitting the dash binnacle hard with the palm of the hand -

Good luck

Anyway, if the worst does come to the worst, as I found out 2 years ago, if you are a bit patient, decent DG motors are not that hard to find (Billy 739 to the rescue in my case and still going strong - touches wood !!)

Fickle warning lights are the norm with our vans My temp warning light glows all the time and I've changed the sender in the header tank, cleaned the earth crowns and cleaned the contacts on the multi pin connector. It uses no water and the temp gauge works ok...I give up Been two years like that ,so I live with it...

pocolow wrote:My temp warning light glows all the time and I've changed the sender in the header tank, cleaned the earth crowns and cleaned the contacts on the multi pin connector.

Likely "relay" 43 is iffy, which is not a relay but a bit of circuitry that controls how the LED flashes for over temp, low water level etc.

Quick update:

drove home last night. Oil light did not come on when I started the van. Drove home, 9 miles, short stretch of motorway. No red light. Got home, turned off, turned on -red light came on and went off as per spec. Idled. No flickering. Went indoors, got changed, went to get van. No dash lighting but leds working,!! Now starting to think the gremlins have moved in. Administered the smack to binnacle.....but not expert enough as had no effect. Pulled away...lights came on.

No further flickering red light.

This morning, once again no oil led on ignition. 10 mins started and stopped. Oil led on igntion, no further flickering!!

Still going to get it pressure tested just to make sure.

Em
xx

you need this... it's probably not gremlins this time of year

Kev....thanks. Will I find it at Amazon??

er ..no sorry luv

your nearest enchanted forest or grotto will be the best.

Hi

I have an almost identical issue now - red light coming on at idle, but not under revs.

My fun started 6 months ago. I would get BOD (buzzer of doom) - oil light and buzzer coming on. This would happen if the rev's dropped after a blast on the motorway. Changed the pressure switches twice (both of them - 1.9DG engine) along with oil and new filters. Eventually I changed the oil pump - this sort of fixed it.

I also preformed an engine flush by putting 0w-20 in for about 10 mins. This made a lot of crud come out - I will never know I needed an oil pump change but a lot of rubbish really did come out.

I now run 5w-40, this appears to have turned the BOD off, and controls the oil light I just figured that the 5w-40 allows the oil to work better at temperature and the engine seems to be getting hot.

Not sure if it will work for you. What do others think about changing to 5w oil?

One more question - does your oil light come on if you idle in neutral, or with the clutch on the floor?

ghost123uk wrote:

pocolow wrote:My temp warning light glows all the time and I've changed the sender in the header tank, cleaned the earth crowns and cleaned the contacts on the multi pin connector.

Likely "relay" 43 is iffy, which is not a relay but a bit of circuitry that controls how the LED flashes for over temp, low water level etc.

Interesting ..where would i find this "relay 43" and where to buy a new one so as to test it???

Cheers Mark

pocolow wrote:

ghost123uk wrote:

pocolow wrote:My temp warning light glows all the time and I've changed the sender in the header tank, cleaned the earth crowns and cleaned the contacts on the multi pin connector.

Likely "relay" 43 is iffy, which is not a relay but a bit of circuitry that controls how the LED flashes for over temp, low water level etc.

Interesting ..where would i find this "relay 43" and where to buy a new one so as to test it???

Cheers Mark

It is on the fuse panel behind the glove box.
See ebay item number = 220460062939 though that is £19.95
I would borrow one of a mate and see what happens.
Billy739 on here might have spare ones too.

Going a bit off Ems oil pressure worries topic here
Mind you, a year and a half ago, Em was having a problem with "relay" 43 here = viewtopic.php?f=2&t=56700..

Ta for that, I'm sure Em won't mind going off topic slightly.. Just had a quick check and I don't have a relay 43 but I do have a relay 42 . Is this maybe a later mod as my van is a 1990 model?