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21-12-16, 04:14 PM | #11 |
Grown up member
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Yeh could be a possibility! It would be easy enough to then take bits off the working one.
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21-12-16, 04:17 PM | #12 |
4 ring whore!
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Only the odo not working ?
If the speedo and rev counter are working correctly, that means the signals coming into the cluster must be good. So it's either that board or a bad signal from that board to the main cluster board. Occasionally on my 90 the speedo drops out and this also stops the odo from turning
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1991 90 quattro 20v sport 1991 90 quattro |
21-12-16, 04:34 PM | #13 | |
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Quote:
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21-12-16, 04:38 PM | #14 | |
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Quote:
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21-12-16, 04:42 PM | #15 |
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21-12-16, 05:24 PM | #16 |
4 ring whore!
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Have you got a 160mph speedometer on yours or a 120mph version ?
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1991 90 quattro 20v sport 1991 90 quattro |
21-12-16, 06:27 PM | #17 |
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21-12-16, 07:05 PM | #18 |
4 ring whore!
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That's a problem as the 120mph versions are usually UN4 but the 160 will be VDO
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1991 90 quattro 20v sport 1991 90 quattro |
21-12-16, 07:23 PM | #19 | |
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Quote:
Also from odometer gears page there's a bit there that talks about the K value... I'll quote it.. "The yellow square indicates the data tag for the speedometer unit. The CQ tag is listed with a K=6765. This number is the number of pulses per mile. Using this number a frequency can be determined for any speed. This is helpful if you need to pulse a new unit so that the speedometer reads the correct odometer. This K value also allows you to get a used cluster that will work properly in your car. The CQ K value is different from all other B3 models and is also different from the B4's." I wonder what the 1.9tdi clocks would be, and would they be compatible??? |
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21-12-16, 07:52 PM | #20 |
Trickster
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I'd not come across UN4, but VDO is an instrument manufacturer, so I guess UN4 is code for another supplier. Most of mine are VDO gauges.
As for the pulses, beside dietary advice; Pulses per mile, gives a pulse 'frequency' when combined with a time reference. That is then converted into voltage, which drives the pointer. The same pulses being used to drive the odometer (As an aside, there is a configuration card which is installed in the instrument cluster which sets it to run metric or those other units that confuse the Europeans so much.)
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