Author Topic: Build thread - Rob's Audi UR Quattro  (Read 87051 times)

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Offline RobClubley

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Re: Build thread - Rob's Audi UR Quattro
« Reply #1290 on: January 12, 2018, 03:14:02 pm »
Hey rob
I have a new gear stick knob (repro) from classic quattro if you want it FOC. I got it and then had the original recovered so I donít need it any more. Please send your post address and I will mail it to you.
Cheers
Rich
RR urq #487 of 892

Thanks for the offers, but John Stone sent me one a few weeks ago! I haven't got around to fitting it yet :)
1985 ur quattro
2006 A4 3.2 quattro (Not to be modified by order of the wife!)
quattro project

Offline RobClubley

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Re: Build thread - Rob's Audi UR Quattro
« Reply #1291 on: January 12, 2018, 03:16:47 pm »
Good news, the dash and sensor have been proven to work. Turns out the wiring diagram I was using was for a 1985 car and mine is a 1984 build. So I was testing the wrong pins!







Powered by DeWalt!
https://www.facebook.com/ProjectRustyquattro/videos/1224519157648378/

I did some tinkering this morning and tested continuity from signal wire to dash and it works. So all of the parts have been proven to be functional outside the car. Confused now.
 Haven't had time yet to re-fit and test again.
1985 ur quattro
2006 A4 3.2 quattro (Not to be modified by order of the wife!)
quattro project

Offline brian

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Re: Build thread - Rob's Audi UR Quattro
« Reply #1292 on: January 12, 2018, 04:01:47 pm »
This is certainly putting up some resistance, pardon the pun, to actually getting on the road.
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Offline Trofeo

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Re: Build thread - Rob's Audi UR Quattro
« Reply #1293 on: January 12, 2018, 05:18:01 pm »
So you've had the dash working in the car previously correct? So it could only be an intermittent circuit somewhere.. Could be the connector, could be a broken wire, or even a broken down wire that won't carry the required current. Best of luck!
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Offline Worms

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Re: Build thread - Rob's Audi UR Quattro
« Reply #1294 on: January 12, 2018, 05:36:38 pm »

Powered by DeWalt!
https://www.facebook.com/ProjectRustyquattro/videos/1224519157648378/


Pfffttt... didn't even get to 88 MPH... how are you ever going to get back to 1984???

  ;D

Offline black16v

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Re: Build thread - Rob's Audi UR Quattro
« Reply #1295 on: January 12, 2018, 06:27:35 pm »
OK, so the speedo works on the bench. Maybe check that the mechanical thingy that drives the speedo sensor is working, ie no stripped cogs or drivers. Or drive it with a drill, as you did on the bench. I'm guessing you have a good power supply and negative supply to the sensor. I don't know what the power supply on these cars should be but some hall speedo sensors have battery voltage (they reduce voltage inside them), others have 5 volt, reduced from the instrument cluster. Does anything else in the car need a road speed signal,  ie cruise control, transmission controller, engine controller, radio, wipers, that voice warning system, etc. (Just some ideas).
One of those circuits could be faulty pulling down the speedo sensor output which, if it's a hall sensor, will only be 5 volt high and 0 volt low. Maybe cut the speedo sensor wire at the instrument cluster and at the sensor and connect a new direct wire, just to test, (as you did on the bench). Good luck
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Offline RobClubley

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1985 ur quattro
2006 A4 3.2 quattro (Not to be modified by order of the wife!)
quattro project

Offline le mans

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Re: Build thread - Rob's Audi UR Quattro
« Reply #1297 on: January 14, 2018, 09:47:14 pm »
Excellent!
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Offline RobClubley

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Re: Build thread - Rob's Audi UR Quattro
« Reply #1298 on: January 14, 2018, 09:58:58 pm »
The speedo is working at last!
The problem was wiring after all. I thought I'd tested the wiring by connecting a switched live to the signal wire and putting a tester on the other end, where I got a 12v live.
But it turned out that somewhere the signal wire to the dash connector was hooked up to a switched live, and also connected to the speech synthesiser, so the pulses from the sender were being ingnored by the dash, but clicks were coming from Patrizia's speaker.
I decided to bin the lot and run a new live, earth and signal wire. And it's working!



I also sorted a separate switched live for the pin that powers the backlight on the odometer, which wasn't working. My mate swapped out the bulbs for LEDs in the holders, so it should last now. And it's readable .

I think I've sorted the idling issue too. A video from Gears and Gasoline about spark plugs reminded me that I changed them, and maybe they could be at fault, so I bought some new ones. Bosch weren't available so I went for the NGK equivalent.

1985 ur quattro
2006 A4 3.2 quattro (Not to be modified by order of the wife!)
quattro project

Offline le mans

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Re: Build thread - Rob's Audi UR Quattro
« Reply #1299 on: January 15, 2018, 09:31:30 am »
Ready for WOF?
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Offline RobClubley

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Re: Build thread - Rob's Audi UR Quattro
« Reply #1300 on: January 15, 2018, 02:38:37 pm »
Ready for WOF?

I think it might be. Booked for this week.
1985 ur quattro
2006 A4 3.2 quattro (Not to be modified by order of the wife!)
quattro project

Offline RobClubley

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Re: Build thread - Rob's Audi UR Quattro
« Reply #1301 on: January 15, 2018, 08:05:25 pm »
I can read my odometer! Thanks to Adam for soldering LEDs in place of the factory bulbs, Roissy.co.nz for identifying what pin they were connected to and a bit of re-wiring by me.

1985 ur quattro
2006 A4 3.2 quattro (Not to be modified by order of the wife!)
quattro project

Offline brian

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Re: Build thread - Rob's Audi UR Quattro
« Reply #1302 on: January 15, 2018, 08:31:52 pm »
Hopefully, this is the end of the trials and the tribulations can begin
1.6 Polo

Offline RobClubley

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Re: Build thread - Rob's Audi UR Quattro
« Reply #1303 on: January 16, 2018, 04:36:22 pm »
Hopefully, this is the end of the trials and the tribulations can begin

:D
Looking forward to making friends with the local AA guys.
1985 ur quattro
2006 A4 3.2 quattro (Not to be modified by order of the wife!)
quattro project

Offline VW'n

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Re: Build thread - Rob's Audi UR Quattro
« Reply #1304 on: January 16, 2018, 06:07:09 pm »
:D
Looking forward to making friends with the local AA guys.

You might be surprised I've found 80s vag technology to be surprisingly reliable in terms of not being left stranded.
But yes expect many niggles basically forever....
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