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Model specific boards => Golf mk2 => Topic started by: Mr Blue on 11 January 2009, 22:21
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hello all.
I can work out how to power the VDO guages out of an audi and into my mk2.
Oil Pressure, Oil temp and Battery.
Do i need to use the audi oil pressure sensor (twin pole) or can i just splice into the mk2 wire?
same goes for the oil temp guage.
Can I connect and go or will this throw out my MFA readings?
thanks
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You can't splice because it mucks up your MFA - but you can just not plug in the MFA and run a single set of gauges.
There's a really thorough post on this somewhere, I was reading it the other day...
*goes off to find article*
Edit: That didn't take long,
http://homepage.ntlworld.com/john.combes2/Vdo.htm
http://www.golfgtiforum.co.uk/index.php?topic=46207.0
http://www.golfgtiforum.co.uk/index.php?topic=13616.0
http://www.vwgolf-mk2.com/ethreevdogauges.html
http://www.clubgti.com/forum/showthread.php?p=1597109
http://www.ffp.fi/index.php?mid=2&pid=131
http://42draftdesigns.com/tech.htm
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thanks. i checked those.
Still dont get it. :embarassed::
What sensors do i need? parts numbers are all i want and ill take it from there :grin:
its an 8v
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If i remember right you need the 180 deg temp sensor of the audi. This is fitted to the back of the head. You also need the oil pressure sensor. This is fitted to the top of the oil filter housing. About the same size as a camera film. best bet is to find an audi and get the bits off it
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Another link http://42draftdesigns.com/tech.htm
There's a guy on ebay that sells vdo senders, haven't got the link though.
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chers all
The sensor I have is 035 919 561. This goes onto the side of the head as its a low pressure sensor right?
So the audi sensor with 035 919 561A goes on the oil filter housing (replaces the high pressure sensor)
Now i need a 'T' piece for the extra oil temp sensor to the VDO.
That part number is: 049 919 563 A - Audi 180 degree sender
Right?
Another question
What oil pressure readings should I get? I did a small test today and was getting around 4bar on cold start then it settled to about 1.8bar when warm. When I revved the engine it went to 5bar.
Is this ok?
thanks
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yeah thats spot on. the T piece is only needed if you want both the audi oil temp and MFA oil temp, if you only want the audi one then chuck the mfa sender into a box and fit the mfa one. Problem with the audi one is it has a massive temp range, so 'up to temp' on a normal every day run is barely off the stop!
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Thanks RJ
I did test VDO temp guage but I left it as the needle hardly moved off the end. I do want both to be working though :cool:
T Piece (http://cgi.ebay.co.uk/Oil-Pressure-T-Piece-suits-Classic-Mini_W0QQitemZ270344641274QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item270344641274&_trksid=p3286.c0.m14&_trkparms=72%3A1683%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318) - What you recon to this?
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that would do the job, but you need to confirm that the threads are M10x1
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What if I want to run the oil temp on the MFA to be water temp (which I think I've worked out -just swapped the oil temp wire to the water temp)
BUT, I want to wire up the VDO's to oil temp/pressure so i don't need the T piece.
It's an Areg 8v, so I replaced the front sensor with the twin sender, but it doesn't move/read at all. The 2 wires from the gauges go where???
Do I put the pressure gauge wire to the OE pressure gauge? What happens with the oil pressure buzzer?
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twin sensor not working (which is the pressure sensor)...
you might need to remove the sensor to look at the part numbers as they are very small.
If the part number has 'A' on the end then it fits on the oil filter housing.
If it has no 'A' then it fits on the side of the cylinder head like mine.
I fitted the original MFA wire to pin 'G'. Pin 'WK' went to the VDO pressure guage.
On the back of the VDO guage you can easily mix up 'G' as 'ground'. 'G' goes to the sensor.
RJ convered most of this on his threads but its quite confusing till you get out there and deal with it :grin:
Water temp...
Im guessing the engine temp needle will not function correctly if you added the oil temp wire to the water sensor.
Thinking about it. Do you need water temp? The engine temp needle does this surely? The MFA will give a digital reading though.
Possibly use a 4 pin water temp sensor off a mk4 polo?
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blue if you wired it up like you say that wont work ;)
Pin G goes to the VDO gauge, WK is where the original oil pressure switch wire goes. Also the MFA wire cant go to pin G, as the MFA is a temperature display and the dual pole sensor is pressure.
oze, if you want your mfa to display watr temp you need to swap your mfa white colar sensor to where the black water temp sensor is currently, the water sensor isnt the right rating for the mfa. you could run both though, get yourself a side flange from a MK2 8v with aircon, and a later mk2 2 pin black water temp sensor, fit those and run the red/yel wire to the 2 pin plug, run the earth wire for the sensor to the head somewhere. then fit the white colar oil temp sensor to the front flange, and block the old mfa hole off with the water temp sensor or a vdo oil temp sensor if you have one, on audi gauges the right sensor has a blue collar
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Rubjonny, Im confused now.
But when I swapped the temp wires over, the MFA reads about right for the water temp (unless I've messed up my wires).
I'm partially colourblind, so colours don't make much sense to me.
Wire A = flat spade connector that fits to the front of the oil housing.
Wire B = White collar (the big plastic bit) that fits onto the rear of the oil housing.
Wire C = flat spade connector on water housing.
If I swap wire C for A, the MFA reads a temp (pretty much correct I think at 90-100deg)
If i disconnect this wire, the mfa reads blank.
So I take it I've moved the wrong sensors wires! My temp gauge doesn't move normally , hence swapping the mfa readout!
On the gauge, the 3 horizontal lines = ground???
Cheers
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Anyone?
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it will register a display on the mfa, but the sensor is still the wrong rating. note the sensor on the filter housing has a WHITE colar, and the one on the water housing has a BLACK colar, they are different ratings. Take the white colar sensor out, put it in the water flange, fit wire A and job done. Fit the water sensor to the filter housing, to block the hole.
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Collar= big plastic thing?
The white (oil) has a collar, but the only plugs I have on the water side of things are:
non-insulated female spade
2 pin sensor plug.
The only thing that would interchange is the female spade connectors.
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collar = small bit of plastic just bellow the connector.
mfa oil temp = white
water temp = black
audi vdo sender = blue
just swap the small sensor over, they are the same shape, just have a different colour on the plastic collar
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I'm having trouble finding an Audi 80 in scrap yard. Is this any good instead?
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWAX:IT&item=370163072919
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not sure, best ask the seller if it will work with an audi gauge, but for a start the thread pitch on that is wrong you need M10x1
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Actually RJ, the thread is right. 1/8th NPT is M10x1 ;)
That sender should drop straight in.
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collar = small bit of plastic just bellow the connector.
mfa oil temp = white
water temp = black
audi vdo sender = blue
just swap the small sensor over, they are the same shape, just have a different colour on the plastic collar
right, So i've swapped the sensors over, but what do I do about the twin sender? What wires go to where? Is it a case of one goes to oil temp the other to oil pressure? If so, how do I know which is which?
The +/- go to the gauge (+= +ve and III=-'ve)
G goes to the gauges???
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Oh ok, didnt know that!
if its an audi sensor G is for the gauge, WK is for the old oil warning wire :)
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Yeah, it took a bit of convincing from me to the guy I was getting the guage off too - had a debate for 5 minutes. He just kept saying, how is 1/8th of an inch 10mm - oh well :huh:
There's oodles of guides for these gauges, how is there any confusion?
(http://homepage.ntlworld.com/john.combes2/twinpole.jpg)
The audi oil pressure gauge needs its own specific sender. If its a 10bar gauge, it needs a 10bar sender. You can't use the exisiting one on the engine as this is for the low pressure buzzer/warning light and is incompatible. However, you get the bonus of a twin pole pressure sender from the Audi which has both the connector for the guage (G) and for the dash (WK).
(http://www.demon-tweeks.co.uk/resources/images/zoom/LMA074.jpg)
The oil temp is the same story, if you want to maintain the MFA readout on your dash, then you need to get a T piece. As the oil temp sensor from the Audi isn't twin pole - it means that you have to get a 1/8 NPT (M10 x 1) T piece, then screw your original MFA sensor in, and the Audi gauge sensor in.
Then you just route the wires back to the cabin. The +ve and -ve can be taken off a relay from the IGN/GND on the fusebox and the blue wire from the cig lighter as a trigger.
The theory is that almost any sender will work with any gauge as its all just based on resistance - so if you buy a universal sender off ebay that can read up to 10 bar - theory says it should work with any 5 bar gauge, or infact anything up to 10 bar. I'm not speaking from personal experience, however.
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different sensors return different resistances though, i.e. VW 0-180 and Audi 0-180 temp sensors return different resistances. pretty sure the same is true for the 0-5 and 0-10 bar senders?
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right. Got it wired up I think, though the white collar snapped the head off the sensor!
Which is the warning wire?
I ran 2 wires from the gauges to the twin sender and now reads about 70deg for oil temp and Off the scale for the oil pressure.If I swap the wires around I get no temp but fluctuating oil pressure according to revs but stays roughly 3.5-4bar.
Also went to ECP and tried to find the twin wired plug at the back of the water housing, but no joy. Said it doesn't exist for my engine.
What's the Audi blue sensor for?
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the warning wires are the yellow (1.8bar warning) and blue (0.3bar warning)
the audi blue sensor is for the audi VDO oil temp gauge, VW sensors are not the correct rating.
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Poo. I need the blue sensor then. (Where do I put this on the engine?)
Which wires are for what? and what goes to where?
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just re-read your other post. The VDO twin sender is pressure only as in you take out one of the original pressure warning switches, and fit the VDO in its place. then plug the original pressure wire to the WK terminal and the pressure gauge to the G terminal.
The audi oil temp gauge needs a completly different sensor, the blue one i mentioned above :)
oil temp can go anywhere really, as long as its in an oil chanel.
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I meant the warning wires. Sorry.
Which wire is the pressure wire? Is it the upright one with the white sleeve?
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the chunkier ones with the yellow and blue wire, big rubber boot over the spade :)
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I think I'm going to need to put a pic up. I'm confused as ETOS says I don't have a plug-which I do and I dunno what plug is what anymore!