Engine light & buzzer 1.9 DG on LPG

[stevo snr]

My camper van is driving me bonkers. It is down on power and has been for a few years now, but still managed to transport us to Lithuania and back followed by a trip to Berlin a couple of weeks later. It has always struggled on motorway gradients.

Anyway a couple of months ago coming back from the supermarket, the oil light and buzzer came on. I changed the oil to 20/50 and a new filter but it didn't help. It would tick over for an hour no problem, but when I got over 2000 rpm it came on again. Then a week or so after that I found a break in the wire to the switch behind the pulley, fixed that, thought, problem solved, revved it, no problem.

Just been out in it for a 10 mile run. About 2 miles out light and buzzer came on for about 10 seconds then stopped, then a bit later came on again for 10 seconds again. 2 miles from home came on and stayed on. When I got home I turned it off then immediately re started it, no light or buzzer, revved it to 5000 rpm a few times no light or buzzer.

I know this subject has been discussed a few times and I apologize for bringing it up again, I'm considering a replacement engine, any thoughts?

[steve8090]

There is a lot of info on this particular phenomen before you go and spend a load of your hard earned brasso on a replacement engine, get the oil pressure checked, if its fine then your sensor system is at fault and can be remedied reasonably easily, 1st stage get your oil pressure measured, if you dont want to do it yourself then get it to a garage to check.

[stevo snr]

I hear what you say Steve, but what was puzzling me was the inconsistency of it all and I thought that when the buzzer and light came on it stayed on until the ignition was reset, mine seems to be more weird.

[steve8090]

Its an electrical detection circuit, works on the higher pressure switch on the front of the engine and only goes active over 2000rpm, only sure way is having the pressure checked with a correct gauge to see if its the engine or the detection circuit, imagine spending over a £1000 on a new engine just for your buzzer to go off again and having the same fault.
Get the pressure checked, try replacing the high pressure sender, temperarilly earth out the yellow wire from the pressure sender join, if it goes off its your dashboard.

[pandp38]

Stevo, I had similar problem and it turned out to be a faulty connection in the white multiplug connector under dashpod. Worth getting oil pressure checked though.
Paul

[kevtherev]

check the connector in the dash, wet gauge test, replace the pressure switches first, they're cheaper than an engine
Sounds to me like an earthing fault/naff switch on the high pressure 0.9bar switch

why does it always have to be a new engine

[stevo snr]

Thanks for the advice, going off line now will do some checking in the next week, weather permitting.

[itchyfeet]

https://club8090.co.uk/forum/viewtopic.php?f=37&t=127516" onclick="window.open(this.href);return false;

[stevo snr]

I have been having problems wit my buzzer and oil light. just earthed out the high pressure switch and the buzzer is still buzzing, any suggestions?

[itchyfeet]

I have been having problems wit my buzzer and oil light. just earthed out the high pressure switch and the buzzer is still buzzing, any suggestions?

Most likely that the wire you earthed doesnt connect to the dash, its broken or corroded somewhere
earthing the buzzer is all very fine but leaves you with only one sensor circuit , the primary sensor/switch is open when running so light is out when its broken, so not great, you must check the oil light comes on before starting

[stevo snr]

Thanks for that mate, I do suspect an electrical fault somewhere and am about to change the engine due to low compression. However I've promised to take some stuff to my mates caravan next weekend 150 mile round trip. I've done over 100 miles since the buzzer started and it still sounds fine. What do you think? I think I should go for it then I can start on the engine change.

[marlinowner]

If it only does it when the engine is hot and you are decelerating after running at speed for a few miles then it is probably marginally low oil pressure, especially if the engine is high mileage. My engine exhibited this fault for about 10000 miles before it died at 190000 miles. Definitely a good idea to check the oil pressure rather than assume its a wiring fault.