oil pressure gauge install

[Quadcammer]

hmm. From those videos, my gauge definitely feels like its moving more slowly. If I run it up to rpm quickly in a lower gear, it takes a bit for it to catch up, and that doesn't seem to be the case for you guys.

I followed the instructions to a T (16 gauge wire to sender, 14g ground) and a fused power source. The only thing I didn't do is use a dedicated ground, so I'll have to check on that.

I have oil temp on the drivers side, oil pressure on the passengers as I'd assume you guys do also.

My car has always run hot and I'm not sure why, but its also a base car with a 3.2, so maybe a bit less cooling capacity.

Can someone postulate as to what the unmarked lines on the gauges indicate. The one after 200 seems like 210 to me (what my car runs on the street), then 240?

[steved0x]

Originally Posted by Quadcammer

Can someone postulate as to what the unmarked lines on the gauges indicate. The one after 200 seems like 210 to me (what my car runs on the street), then 240?

From measuring with my durametric:
The two that are to the left of the 200F are 170F and 190F. I was expecting a linear progression from the 120F mark to the left past the two evenly spaced ticks on the way to 200F, but they measured out as 170 and 190, then verified with 200 when I got to that level.

I have been treating the two on the right as 220F and 240F but when I was street driving with the durametric the time I did the calibrations I never got it hot enough to verify anything over 200F. And the two ticks to the left of 200F are not linear, so who knows

But if you look at this other VDO gauge that runs off the same sender (and this is an interesting thread as well)

https://rennlist.com/forums/996-forum/827720-oil-temp-gauge-using-the-built-in-oil-temp-sensor.html

https://www.vdo-gauges.com/instruments-displays-and-clusters/by-series/cockpit/cockpit-300-deg-f-oil-temperature-gauge-use-with-vdo-sender.html

The 180 and 220 marks on this cockpit gauge seem to match our VDO Vision Black gauges:
The 180 seems to split the two lines that I marked as 170 and 190 -Edit: i just figured out to overlay the graphics, the 180F lines up with the 2nd line that I was calling 190F.
The 220 seems to line right up on the line I am calling 220



I have never gotten to the 220F on the street, the only time I get over 200F on regular street driving is if I get jammed up in traffic and not getting good airflow. On the highway it is 200F and below.

I also have a 180F low temp thermostat.

[Geof3]

Originally Posted by Quadcammer

hmm. From those videos, my gauge definitely feels like its moving more slowly. If I run it up to rpm quickly in a lower gear, it takes a bit for it to catch up, and that doesn't seem to be the case for you guys.

I followed the instructions to a T (16 gauge wire to sender, 14g ground) and a fused power source. The only thing I didn't do is use a dedicated ground, so I'll have to check on that.

I have oil temp on the drivers side, oil pressure on the passengers as I'd assume you guys do also.

My car has always run hot and I'm not sure why, but its also a base car with a 3.2, so maybe a bit less cooling capacity.

Can someone postulate as to what the unmarked lines on the gauges indicate. The one after 200 seems like 210 to me (what my car runs on the street), then 240?

What sender are you using? I grounded mine at the ground in the auxiliary plug. I just tapped power and ground into that plug. It would be VERY cool to be able to find the male side of that particular plug and make a custom harness.

I used the 996 sender. My gauge operates similarly to the others, almost like a tach. If you used the 996 sender, is it possible you swapped the leads? Not sure if that would make a difference or not, but maybe?

[steved0x]

Originally Posted by Quadcammer

...The only thing I didn't do is use a dedicated ground, so I'll have to check on that.

I don't see how it could make a difference, but they specifically call that out in the instructions for the gauges if I recall. Might be worth a try...

Originally Posted by Geof3

I just tapped power and ground into that plug. It would be VERY cool to be able to find the male side of that particular plug and make a custom harness.

That would be very cool!

Originally Posted by Geof3

I used the 996 sender. My gauge operates similarly to the others, almost like a tach. If you used the 996 sender, is it possible you swapped the leads? Not sure if that would make a difference or not, but maybe?

He's got the VDO sender that is the non-porsche branded version of the (presumably) same part. If the leads were swapped (and I think the blades might even be two different sizes) it would not work at all, the one is simply a low pressure switch that (presumably) completes a circuit to ground when the pressure drops below a certain level.