Club 80-90 Forums

hello all - one very frustrated T25 could do with some help

went to use van after a full service (for the first time this morning) and the BUZZER of DOOM sounded every time i started the engine up.

i presuming its to do with the new oil presure switch that was fitted - the mechanic noticed the previous one was leaking.

i check oil level and it was correct Then when i got underneath the van this morning - i notices that the new sensior only had one wire coming off it - which seemed strange as i thought the previous one had two wires.

anyone know whats going on -

i can't believe i'm thinking this - but this might be the final straw with a van that has cost me thousands. after a total rinterior /exterior respray,new interior,new recon engine and ss exhaust and so many other jobs its still too often a pain in the a***.

appreciate any advice

pretty sure mine has 2 wires....its a switch isn't it....so electrics going in and electrics going out. Circuit not completed so buzzer...he shout loud!! (I think!!)

What engine...and which pressure switch? The chaps that know will need to know to advise you better!

Em
x

cheers em - makes sense to me - but i know very little about these things

its a 2 ltr petrol engine - originally DG - but that may have changed with recon engine

i noticed that the new switch only has a connector to fit one wire

thanks for reply

DG, 1915cc, two oil pressure senders potentially, one low one high, low is between pushrod tubes on left side, high is below water pump at rear bottom of engine, both have single wire connecting to wiring loom.
read up in wiki, but basically if bod alarm is going off then you have a wiring fault and or the wrong sender fitted, low is .3bar, high is .9bar ie 13psi, it's dead simples and your mechanic should be able to sort it out without much difficulty
also check that 15W/40 oil is used and Mann filter is fitted

VERY BIG THANKS! for the help

- went to see mechanic today and he said that he had not used a VW replacement oil sensor. seems it would have taken longer for him to get the original VW part in.

ones on order - so he will replace ASAP

thanks darren

Also a good idea is to fit a separate oil pressure gauge so then you can monitor the oil pressure ,as these BOD can be very temperamental.

- the mechanic changed the sensor (next to the push rods) this time using an actual VW one - but a soon as i revved the engine, off went the buzzer.

so i will take a copy of this thread and hopefully he can it sorted before i have to store the van away for its winter hibernation.

again BIG THANKS for all your comments

somtimes i loose the faith in the van, but always feel better after coming on the forum....

Still not got to the bottom of the buzzer of doom

My local garage boys - have spoken to their VW suppliers and now fitted 2 different vw low oil sensor next to the pushrods ......However the BUZZER OF DOOM and oil light still keep going off.

My mechanics tested the oil pressure and its correct… also I shared the treads / advice off this forum hoping it might point them in the right direction. This did help - and it turns out the company that built and fitted the recon engine did not include the second high oil sensor near the water pump... instead it is blanked off…

Anybody understand why????

My mechanics seems to think that the original leaking sensor may not have been working in the first place ….

Looks like that unless the boys that built and fitted the recon-engine can explain the wiring to the local mechanics – they will have to get an electrician on it.

Can’t even take the van back to the engine builder and fitters as I am in Brum and they are in Essex.

Any body go an ideas of what is going on.

All this for a sensor change ….. gggrrrrrrrr!!!!!!. moving house in two weeks and really need my van

As always any advice really appreciated.
P.S. I have minimal understanding of mechanics / electrics

amoore77uk wrote: it turns out the company that built and fitted the recon engine did not include the second high oil sensor near the water pump... instead it is blanked off…

Anybody understand why????

I would assume they were told/assumed it was for an early system van which didn't have the BOD loom. Any mechanic worth their salt would have spotted that anyway though ... and possibly questioned what it was for ?

When you say 'their VW suppliers' if that is GSF then frankly anything could be happening ...their sensors have form so-to-speak. Buy the proper things from Brickwerks.

Ian

this maybe a silly point to make, but if you have two oil sensor wires (both brown and connecting into a two pin white plug above lhs front exhaust to head) have they got them the wrong way round, ie using the wrong one to the sender?

seen it before....

Mocki wrote:this maybe a silly point to make, but if you have two oil sensor wires (both brown and connecting into a two pin white plug above lhs front exhaust to head) have they got them the wrong way round, ie using the wrong one to the sender?

seen it before....

thats how i thought it was set up two wires -coming off the sender under push rods

- but the mechanic that put the new sensor and new wire on - said it only had one wire to begin with.

so i just presumed that i had got it wrong... is it possible i could have been fitted with two wires then???

Ian Hulley wrote:

amoore77uk wrote: it turns out the company that built and fitted the recon engine did not include the second high oil sensor near the water pump... instead it is blanked off…

Anybody understand why????

I would assume they were told/assumed it was for an early system van which didn't have the BOD loom. Any mechanic worth their salt would have spotted that anyway though ... and possibly questioned what it was for ?

When you say 'their VW suppliers' if that is GSF then frankly anything could be happening ...their sensors have form so-to-speak. Buy the proper things from Brickwerks.

Ian

cheers Ian

no idea where they are getting part from - will ask mechanic

any idea what needs to be done to correct the situation

if it has no high pressure sender then earth the sender lead that would have been connected to it that'll shut the bod up, or fit a high pressure sender if there's a threaded hole for it

Tell your meachanics to follow Aidens advice, two minute job! You don't have to worry about doing this mod as there are thousands of T25s that are perfectly happy to run with just the single oil pressure switch - you can sort out the missing/blanked off one later.

happy to say saga is finally over

showed threads to meachics - it was really helpful to be able to try and give them some direction to go..

after they spoke to the people who did the recon engine - my mechanics ended up disconecting the wiring for the high presure sensor.

don't really understand why it was not an issue until the low presure sendor was changed.....????

but at least i finally have my van back

AGAIN A VERY BIG THANK YOU FAR ALL THE HELP AND ADVICE