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Topic: Auxiliary Gauges... (Read 3912 times) previous topic - next topic

Re: Auxiliary Gauges...

Reply #15 –
These are currently on eBay, two different seller names but clearly the same person -

They're branded 'Lucas' but are genuine VDO's and appear to be old stock.

Apart from being a very fair price for what should be quality items (I've no connection to the seller) they might interest MK2 owners because unusually for VDO's of that style they've white needles -

If you are, there aren't many left -

https://www.ebay.co.uk/itm/LUCAS-VDO-ENGINE-TEMP-GAUGE-SIB421-52mm-JAGUAR-MG-TRIUMPH-ETC-FREE-UK-SHIPPING/124223630369?epid=27027522263&hash=item1cec4e2c21:g:p74AAOSwXSZdrKpx

https://www.ebay.co.uk/itm/CLASSIC-CAR-LUCAS-VDO-OIL-PRESSURE-GAUGE-SIB520-350272018002-FREE-UK-SHIPPING/284147862077?hash=item4228884a3d:g:yigAAOSwOVhgAIs5

Re: Auxiliary Gauges...

Reply #16 –
Quote from: Scherni on
Quote from: Monkey on
Yep, I can print them out. Thingiverse is brilliant for stuff like that.
It's where I got my centre console one from.
I'm actually planning to upload my switch blank up there when I get time too.

By the time I've printed and posted, it would probably be about £10 for a set.

i'd go for those at that price - my metal bending would be awful, and happy to pay for someone else to do the work haha

Sure, let me have a play tonight and I'll see if I can get them printed out ok.
Mk2 Driver
Mk2 Silver 8v
Corrado G60 Turbo
Mk2 Red 8v
Mk2 Grey 16v
Mk2 BBM ABF
Bora 20vt
Mk2 Green VR6
Mk2 Green ABF
Mk2 BBM 20vt
3.2 TT Roadster
Mk2 Red 16v
225 TT Coup
3.2 TT Coup
Mk4 Anniversary
Mk7 Red GTI Performance
Mk2 Red GTI Restoration
Mk2 BBM R32
911 Carrera 4S

Re: Auxiliary Gauges...

Reply #17 –
Quote from: L90E on
These are currently on eBay, two different seller names but clearly the same person -

They're branded 'Lucas' but are genuine VDO's and appear to be old stock.

Apart from being a very fair price for what should be quality items (I've no connection to the seller) they might interest MK2 owners because unusually for VDO's of that style they've white needles -

If you are, there aren't many left -

https://www.ebay.co.uk/itm/LUCAS-VDO-ENGINE-TEMP-GAUGE-SIB421-52mm-JAGUAR-MG-TRIUMPH-ETC-FREE-UK-SHIPPING/124223630369?epid=27027522263&hash=item1cec4e2c21:g:p74AAOSwXSZdrKpx

https://www.ebay.co.uk/itm/CLASSIC-CAR-LUCAS-VDO-OIL-PRESSURE-GAUGE-SIB520-350272018002-FREE-UK-SHIPPING/284147862077?hash=item4228884a3d:g:yigAAOSwOVhgAIs5


thats a great price for those

Re: Auxiliary Gauges...

Reply #18 –
Good morning! @L90E I have been attempting to get my head around this whole setup.. I hope this is well worth the hassle.

I have installed my gauges, volt, pressure and temp.. volt is reading 12 when ignition on and then just above for when engine running. The temperature gauge is also working as showing temp increase when running..

The pressure gauge though.. it's a 5 bar gauge and when ignition on shoots straight to 5.. is this correct?


Re: Auxiliary Gauges...

Reply #20 –
Unfortunately this is another new area for me so I'm still learning as I go along, also my engine's not yet able to run so I can't test out that side of things as much as I'd like just yet... hopefully someone better qualified will be able to give us a few pointers.

This is my understanding of some of it, again be good if someone can correct me if needed -

The voltmeter is probably one of the simplest to install and also I think genuinely useful.

Take a reading at the battery itself, something to compare the voltmeters own reading to. There'll be a certain unavoidable difference due to for example wiring resistance caused by the distance from battery etc. but should be very minor.

With the igniton on and everything electrical off, so there's no draw from any ancilliaries 12v is fine, it may dip momentarilly on start up etc. but should go back immediately - less than a continuous 12v will need investigated.

With the engine running and therefore the alternator operating the volts should rise to a steady 14'ish (with everything off) if you've a healthy system. Much above that and you may be overcharging which is a problem in it's own right

That's because your alternator is both running the ancilliaries and charging the battery and not just the battery on it's own as before.

Turning on bigger items such as the fan, lights etc. will cause incremental drops, but shouldn't be to below 12v or again it may indicate an issue somewhere.

VDO seem to make 2 x basic flavours of oil pressure gauge, 5 bar and 10 bar, plus their PSI equivalents.

There are different senders for the different pressures (5/10) and different readings (Bar/PSI), you need to have the correct one.

The pressure sender'll have info. pressed into it... if you can post it up I might be able to decipher it and we can take things from there.

The needle jumping straight around without you starting the car should at least indicate the gauge is probably healthy.

  




 

Re: Auxiliary Gauges...

Reply #21 –
So yeh the face the needle goes up seems to be a good start... When I attach the wire to G at back and onto the sender, I use the left hand (white) as I feel that means to sender... Then I plug my MFA to the right hand side (black spade one below)
The sender stays at 5. If I ground the wore from G on gauge to chassis.. stays at 5.. maybe I need to just let it run for along time and see if the gauge drops?
Had read that the gauge can show 5 on cold start..(Belfast is chilly)
And then running about 1-2 when oil warmer... This was rubjohnny on clubgti, and I trust his knowledge.. https://www.clubgti.com/forums/index.php?threads/vdo-guage-installation-mk2-scirocco.281676/



I appreciate this is not genuine VDO sender.. however got the sender and single pressure gauge for £30 2nd hand.. so would be ok if it needs replacing lol

Re: Auxiliary Gauges...

Reply #22 –
Rubjonny is the definitive expert, whatever he has said will be 100% correct, no question.

In itself the wiring is very straightforward, I think if there's going to be any issues it'll be with sender and gauge compatibility (over and above it being for a 5 Bar gauge)

I've quickly Googled your FAE sender and can't find it's detailed spec... this is about as good as I can find at the moment - FAE

I was hoping to then try and cross reference it with the VDO specs. on this site - VDO.nl to see if it's compatible but there's not enough detail to do that, that I can see.

My understanding is if you want the MFA to operate it'll be in addition to the new gauge and you'll need an adapter to allow the original VW sender to be connected along with your new gauge sender, they work independently.

Your gauge is shooting around to the maximum because it's connected to a live and earth somehow, that's maybe possible in more than one way.

The wire from 'G' on the gauge should only be going to the corresponding pole on the sender, the sender inturn earths itself when screwed in. It's not clear from your image which FAE pole does what.

The positive and negative on the gauge only go to an ignition switched live in this case and a chassis earth.

I'm guessing the 0.30 on your sender is refering to the potential amount error ie. it's accurate to +/- 0.3 bar.






 

Re: Auxiliary Gauges...

Reply #23 –


At the moment this is the clearest I can find for your FAE sender.

Anyone with better skills than me at reading electrical schematics may be able to say what your 2 x poles are for.

I'm being influenced by what I've found out about VDO senders and that may not apply to other brands.

On a VDO sender one pole goes to the gauge and the other to an optional warning light, the sender itself earths by being screwed into wherever it goes.

Your poles may be a pos. and neg. for all I know and that'd obviously change everything.

Likewise the 0.3 may also be the point the warning light is activated for low pressure and not the degree of accuracy?

Keep us posted, this is something I'm keen to know more about, be interesting and useful to see how it pans out.

Re: Auxiliary Gauges...

Reply #24 –
Quote from: L90E on


At the moment this is the clearest I can find for your FAE sender.

Anyone with better skills than me at reading electrical schematics may be able to say what your 2 x poles are for.

I'm being influenced by what I've found out about VDO senders and that may not apply to other brands.

On a VDO sender one pole goes to the gauge and the other to an optional warning light, the sender itself earths by being screwed into wherever it goes.

Your poles may be a pos. and neg. for all I know and that'd obviously change everything.

Likewise the 0.3 may also be the point the warning light is activated for low pressure and not the degree of accuracy?

Keep us posted, this is something I'm keen to know more about, be interesting and useful to see how it pans out.



I don't know whether an image was meant to be included? However I'm going install and then run car with gauge wiring to pole with gauge image... Let the car get to full temp.. I've also ordered a t piece with 2x M10x1 that I also have for the temp sender.. which works fine.

I used your info to try and work out if the sender was for the head or the oil filter housing... Stupid lack of knowledge..
I'll let you know what my findings are bud, us northern Irish kids keeping the world informed lol

Re: Auxiliary Gauges...

Reply #25 –
Tried making it a direct link to their site but mustn't work on certain devices - hopefully you can see it now...

Re: Auxiliary Gauges...

Reply #26 –
Quote from: L90E on
Tried making it a direct link to their site but mustn't work on certain devices - hopefully you can see it now...



Some early morning searching because I have a baby has brought me to this image..


I know it's not for the model of sender, however the symbology is the same.
Gauge image on my sender to gauge and then the X with a circle indicating the low pressure warning light.. i.e. the wiring to the sender there already?
Maybe I'm wrong.. I'll get some copper washers and install the sender and give the car a good run to see what I get from the gauge
 

Re: Auxiliary Gauges...

Reply #27 –
That makes sense to my basic knowledge!

If the symbols on your sender are there to denote which pole is which then they would be mirroring the markings on similar VDO senders.

If that's the case the single wire from 'G' on your VDO gauge will go to the spade with the white plastic base.

The spade with the black plastic base is optional and only to be used if you want to install an additional warning light. If not it can be left unconnected to anything.

The new light if fitted will come on when the pressure is below 0.3 bar.

If you do use it, it will in effect create 2 x independant warning systems, your original VW one and your new senders one, that's assuming you are keeping both by using an adapter that both old and new senders can fit to.

The new sender has its earth when attached to the engine.

If you do go for an extra warning light you'd have to consider does it activate at a similar point to the standard VW one's so as not to be causing confusion.


Re: Auxiliary Gauges...

Reply #28 –
Quote from: L90E on
That makes sense to my basic knowledge!

If the symbols on your sender are there to denote which pole is which then they would be mirroring the markings on similar VDO senders.

If that's the case the single wire from 'G' on your VDO gauge will go to the spade with the white plastic base.

The spade with the black plastic base is optional and only to be used if you want to install an additional warning light. If not it can be left unconnected to anything.

The new light if fitted will come on when the pressure is below 0.3 bar.

If you do use it, it will in effect create 2 x independant warning systems, your original VW one and your new senders one, that's assuming you are keeping both by using an adapter that both old and new senders can fit to.

The new sender has its earth when attached to the engine.

If you do go for an extra warning light you'd have to consider does it activate at a similar point to the standard VW one's so as not to be causing confusion.




Oh right! So the second spade isn't for the MFA!? I had read somewhere you could use it for that? I've also bought an M10 t piece to help.
Now the question for this is I have tested my sender.. earthed the gauge and it went from 5 to 0 so it seems the sender is the issue..
Time to order a new one

Re: Auxiliary Gauges...

Reply #29 –
I wouldn't jump to any conclusions just yet... sensors are a shocking price and it may be something else / simple to fix.

I'm finding my own way too, you'd be better speaking to someone with experience.

I Googled to see if there is someone local who might be able to help and this popped up... obviously to do with aircraft rather than cars but they seem to deal in VDO senders as part of their business.

They're in Lisburn, for the sake of a phone call they might be able to help / test your existing sender if close to you?

https://www.parts4aircraft.com/