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Model specific boards => Golf mk2 => Topic started by: pegasus on 30 August 2006, 18:14
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Please dont slate me b4 iv started.... :cool: but I have searched the forum and read all the relevant guides etc that are linked from various threads, but Im still confused as to where to hook the wires from the oil pressure and temp gauges to under the bonnet.
I have the twin terminal VDO sender (035 919 561A, 1.8 bar) and the T piece from big boys toys
What Im wanting to know is basically which sensor I remove from the oil filter housing to plumb in the T piece and what do I connect to the two terminals on the VDO sender (one is marked 'G' the other marked 'WK')
Hope this makes sense, and look forward to your responses.....
Paul.
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Oh, yeah, and do I have to buy a different temp sender or can I utilise the one Iv already got? I want the MFA temp reading to still work...
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i don't think it matters which you swap for the t-piece i put it on the one nearest the block as it made things neater... and i used my original temp sender. i sem to remember it annoying me a bit though!
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alright, cheers joe
where is the temp sender, and what do i connect to the 2 terminals on the VDO sender?
How did it annoy you, just out of interest...
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If you have the twin terminal vdo sender then i dont think you need the T piece or origional sensor anymore. I was under the impression that you remove the front sensor. Screw in your twin one. Connect the origional wire to the terminal marked WK and connect your new guage to the terminal marked G.
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Ok, bear with me this will get a bit complicated :grin:
You need a T pice connector to fit VDOs, because you need an extra oil temp sensor as well as the 2 pole pressure sensor.
You cant run 2 wires to the MFA oil temp sensor, as it will make both the MFA & gauge read wrong, and you cant really just wire the VDO gauge to the MFA sensor either as it is the wrong rating for the gauge so it wont read right, you need an audi 0-180 degree one.
As for the 2 pole oil presure sensor, there are several types!
Check the flats of the sensor, it will have 2 values that we are interested in:
0-5bar or 0-10bar - this tells you if the sensor is suitable for a 0-5bar gauge, or a 0-10bar one.
0.3bar(ish) or 1.8bar(ish) - this tells you if the sensor should replace the high pressure (white, 1.8 bar) oil warning sensor, or the low pressure (black/brown 0.3bar) oil warning sensor.
You must replace the right one, or your oil warning light will not function correctly! On an 8v GTI, the low pressure sensor is on the side of the head with a blue wire, and the high pressure sensor is on the oil filter housing with a yellow wire. On a 16v both pressure sensors are on the oil filter housing.
Since yours is the 1.8bar sensor, you should replace the high pressure warning switch, which is the white one with a yellow wire :)
Mine was the low 0.3 bar one so I had to replace the black low pressure one with the blue wire.
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Im still confused so i bet the other guy is too.
How come on my mk2 with the mk3 abf motor i simply had the 2 pole sensor screwed into the 1st hole ontop of the oil cooler. There was no T piece and both my guage and warning buzzer/ligt worked fine.
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Probably because on the abf you have 3 holes in the oil filter housing for your sensors, on the MK2 there are only 2 holes so you need a T-piece :)
I think very late MK2s also had 3 holes on the housing, but I'm not so sure about that.
Edit: You need the T piece if you want to have both the oil pressure and oil temp gauges working, AND the MFA as well. If you don't care about the MFA you can just swap the audi temp sensor on there and throw the MFA one away.
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read this......
http://homepage.ntlworld.com/john.combes2/Vdo.htm
i did it when i put mine in.
can johny or someone make it sticky in mk2 maintenance cos we get asked this a lot
ta
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Thanks alot guys, I really appreciate your help
So, in effect then, I have to replace my high pressure warning sender with the T piece, then screw the audi twin pole sender into that along with a new 0-180 deg audi temp sensor... yes?
But, I still dont know what to wire up to the posts on the twin pole sender which are marked 'G' and 'WK'.... Im guessing that 'G' represents gauge but have no clue what 'WK' stands for
PS - Mr Veedub8v.... I have read the above guide, and it is in the mk2 maintenance section but its still confusing... lol
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I would use the T piece for the old MFA temp sensor & the new temp gauge sensor rather than to fit a temp & oil pressure switch, you want the pressure switch to have good contact with the oil flow :)
AFAIK, G is for the gauge, and WK is for the wire from the old pressure switch. It may be the other way round but I'm pretty sure its that way!
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So, where is the oil temp sender on my 16v engine and what is the part number of the audi item I require...
Cheers for the help jonny btw, I knew you'd be the man with the answers...
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on your 16v its on the back of the head, with a green/black wire.
049 919 563 A - Audi 180 degree sender - £12.19
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thought it was, best check though ay...
So, Im now reckonin I need 2 of these T piece things... one for the oil pressure (VDO sender & original sender for warning buzzer thing which is on oil filter housing) and one for the temp senders (original one for MFA & 180 deg Audi jobby)
What do u reckon?
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I have a sender here that I pulled off the audi engine I took the gauges from, its part number is 027 919 501 and says 12v 120 deg with VDO Germany also stamped into it...
cant I use this?
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nooooo :grin:
You need 1 t piece for the temp senders. The 2 pole audi sensor REPLACES theold high pressure sensor, one connection on the sensor goes to the gauge, the other goes to the wire from the old pressure switch you've removed.
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ok right
so the warning buzzer for high/low oil pressure will still work if I replace the original sender on the oil filter housing for the twin pole audi one yeah?
and, can I use the sender I have mentioned above for the temp or do I need the 180 deg jobby?
cheers
Paul.
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Yeah you have the 1.8 bar twin pole sender, so it replaces the old white 1.8bar sender with a yellow wire. The yellow wire is then connected to the twin pole sender, to pin WK.
I don't think that sender is the right one for the gauge, buy you can always try it! You can compare the MFA reading to the gauge reading, if they're very different you got the wrong temp sender off the audi.
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Im still confused. Think ill just stop reading.
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wicked, iv got the jist of things now :cool:
job for tonight me thinks, the gauges are already in with 2 wires run through into the bonnet for the temp and pressure so all i have to do is replace the sender on the oil filter housing with the VDO twin pole jobby, plug new wire to 'G' and old wire to 'WK'. Then remove the temp sender from back of cylinder head, screw T piece in to head, then replace the original temp sender into T piece along with the audi one, plug new wire to audi temp sender and original to original... job done :laugh:
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Thats it :)
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Then why in pictures do you see a t piece used in the high pressure oil cooler hole?
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Well, either in the pics its an 8v which is where the MFA sender is, or thats just where they decied to put it. Either way works fine, but on the oil filter housing space is limited, especailly if the sensor hole ends up pointing in an awkward direction.
Personally I'd prefer my oil pressure switches to be as close to the oil flow as possible, I'd imagine the oil flow in the T piece might be restricted and give a false reading oil temp wont be so badly affected...
Well actually, if it was me I'd get a MK3 oil filter housing with 3 holes in the oil filter housing for the neatest possible solution. Oh wait, thats what I did, only mine had a 2.0 bottom end attached to it :grin:
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thanks for the help rubjonny - u da man
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(http://img.photobucket.com/albums/v303/pegasus26/CIMG0409.jpg)
jobs a good en :cool:
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looks awesome :cool:
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aye, the guages work a treat, however today on the way to ed38 i had a panic attack when the oil pressure warning buzzer went off.... i stopped to check under the bonnet, there was no sign of oil leaks anywhere, so assumed there must be an issue with the conversion from original sender to VDO sender...?
Checked the oil level when I got to ed38, and it hadn't used a drop :undecided:
So, has anyone else encountered this with VDO guages, and if so, what did you do about it?
P.S. it only happens at low revs, when the oil pressure reading on the VDO guage is around that in the pic above
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how low were the revs? I find my oil light flickers sometimes when the revs drops below 900 (which only happens when my car is playing up, it happend once when the idle switch wires snapped and another time when I didn't do the alternator wire up tight enough :embarassed:)
I've had my VDO sender on the car since I finished the 2.0 conversion and its not set the buzzer off once, though mine replaced the low pressure switch.
In fact, since your VDO sender replaces the high 1.8 bar switch, it shouldn't be anything to do with it since that sender only comes into play above 2k rpm!
You defo removed the white sensor with the yellow wire?
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the revs were at tickover, around a 1000
yeah, replaced the front sender, white with yellow wire just like you said...
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hmm, well its nothing to do with the VDO sensor you replaced, check the wiring to the other sensor is ok!
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i'll do that, cheers
why do you say its nothing to do with the VDO sender?
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becasue the 1.8 bar sensor only triggers the buzzer over 2k rpm, so if its happening at idle its not the sender you just fitted.