VDO Gauge Guide

javelinadave

Administrator
Staff member
Anybody find a quality m10x1 standoff to mount the oil pressure sender? I bought a brass one off of eBay and it snapped apart without even putting any torque on it.
 

Bozman

Well-known member

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RBBailey

NAS-ROW Addict
Callsign: KF7KFZ
Oh, wait. I think I get what you mean now. Your edits were referring to the sensor, not to the pin on the speedo. Right?
 

RBBailey

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Callsign: KF7KFZ
Yeah. It confused me till I looked at the pigtail I have. This is my project for today.
 

RBBailey

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Callsign: KF7KFZ
OK, so I'm not sure if we are supposed to post good or bad here, so move it if you need to.

I just got my VDO Vision Black Speedo hooked up. I used the YBE100530 VSS, and I built a wiring harness to match what I see in the diagram posted above. I was very careful to try to make sure it was right the first time, so I wouldn't have to do something over... and over.......... and... over....

The speedo comes on, reads 0.0 and the needle comes alive when ignition is turned on. But it registers nothing. The auto calibrate just results in an "F 000" code. And manual entry of 4100 does nothing either.

Flummoxed!

Also. Why would my voltmeter read about .24 or so too high?
 

javelinadave

Administrator
Staff member
Swap out the wires from pin 2 and 6 & 8 or reverse them at the transducer. I had the same exact issue and that fixed it. If that doesn't work be sure the transducer spindle is installed correctly.

What/where are you measuring with your voltmeter?
 

RBBailey

NAS-ROW Addict
Callsign: KF7KFZ
So... you're saying my wiring harness was built incorrectly? The one wire that has a split should actually be the singleton? ...that not be easy. I did a good job of making a factory-like harness for the thing.

The VDO volt gauge is being getting its power from a live line that the previous owner had used for the clock or something like. It's temporary. I plan to go directly from the battery. However, when I use the multimeter at the battery, and at the spot where the gauge is, I get the equal readings at both spots. So either my multimeter is showing low, or the gauge is showing high. I'll have to get a second opinion to see which is which.
 

RBBailey

NAS-ROW Addict
Callsign: KF7KFZ
Swap out the wires from pin 2 and 6 & 8 or reverse them at the transducer. I had the same exact issue and that fixed it. If that doesn't work be sure the transducer spindle is installed correctly.

What/where are you measuring with your voltmeter?

I'm pretty sure the transducer is fitting the square hole correctly, just checked. I may be able to try to swap the wires, but I'm 100% sure I did it according to the diagram. However, there are two diagrams. I used the one with the writing, crossed out red lines, and my wires are multi-colored from the transducer.
 

nas90tdi

Well-known member
Dave is spot on with this. The speedo will come on and behave exactly as you described if the split is backwards. Make yourself a little jumper and test it, but I am betting that is your issue.
 

RBBailey

NAS-ROW Addict
Callsign: KF7KFZ
Yep, just did a test drive after reinstalling the transducer, no luck. So now I'm tearing open my wiring harness. I'll report back.
 

RBBailey

NAS-ROW Addict
Callsign: KF7KFZ
OK, that worked! Thanks for the info, Dave!

Lesson: build your harness, test it first, with instrument in place, then finalize the install.
 

RBBailey

NAS-ROW Addict
Callsign: KF7KFZ
Odd thing going on with my volt gauge.

When the engine is off, at several different points from the harness, and at the battery itself, the volt gauge reads about .15-.20 volts high, as opposed to two other multimeters. Which seems a bit odd, but not something I'm worried about from an analogue gauge.

However, with the engine running, and from all those same points, the gauge reads at least 1 full volt higher than anything else I can get a reading off of. the same wires, the same pick off points, the same battery reads something like 14.5-14.6 with engine running, but the gauge reads 15.5 or more.
 
Quick question about the Fuel VDO 301-105

Mines seems to be bouncing like crazy, it doesn't matter if I'm driving straight or turning, it seems to have a severe case of ADD, can't sit still :D. I ordered a new one from the same vendor and replaced it with the same results.

I checked all the connections... the VDO speedo, GPS and temp seems to work fine its just the fuel gauge with the problem?

Any suggestions before i drop the gas and replace the sender?
 
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