Best Oil Gauge Sender Location?

[Smokey Eddy]

Where would be the best oil temp gauge sender locations? The oil sender on the head? or will that mess with stuff?
or the oil sender on the water/oil cooler sandwich?
Where should i put it?? Could i take the temp sender out of the head, cut it, tap the wire onto my aftermarket one and still get the same results as if it were on the stock sender?


I believe one of these temp senders to be responsible for the BUZZZZZ when you over heat.

[stewardc]

The stock oil temp sender location is in the oil filter mount. That's the best place.

[blackdogvan]

I was just going to post a similar question.  I was installing a temp sender yesterday & ran into the delema of not knowing if the temp sender would be better upstream or downstream of my aux cooler. For some reason I thought the temp sender would be best upstream & the cooler fan temp switch downstream of the cooler.

Am I backwards?

[Smokey Eddy]

It's purpose is to measure the temp of the oil going into the block. The sandwich is the best place? What is the sender on the right hand side of the head?

anyone know what it's for?

[burn_your_money]

oil pressure

[Smokey Eddy]

Oooooo
Okay, so if i remove the factory one and put in one for my gauge, i won't have a flashing oil light for the rest of time?

by "one" i mean the one on the sandwich thing by the filter.

[Smokey Eddy]

Okie Dokie so i have one concern with doing that...

Pictures are a thousand words.
Sender goes here


But look at the sizes...
on the left, the stock one, on the right, the one for my gauge.
I realize i can just use the stock one for both (i've already spliced the lines together sort of speak, so i'm not deleting a good warning from the dash.)


Will that longer one be blocking anything in there?
It threads all the way into it ok.

[Luckypabst]

Those are two different types of senders - left is pressure, right is temperature, so you can't use the stock one for both. But to answer your question, I had the same concern using the VDO temp sender in the same location but I just went ahead with it and have had no issues yet.

Chris

[Smokey Eddy]

okay. Well thanks for that. I'll just go ahead and use it there then.

IN THAT CASE
I will screw the "glow plug" temp sender in the head and replace it with that pressure one and run the wire to it up there!!!

It's all at the same pressure everywhere right! Perfect. Is that what you did?

(it's kinda funny that they are all the same size and thread)

[Luckypabst]

Uh, I dunno if mine is correct...
The GP temp sensor is on the water outlet at the head, over about cyl. 3. Water temp sensor is on the heater outlet at the rear of the head, over the bellhousing. Oil pressure sensor is at the rear of the head, near the heater outlet.

Pressure would be highest at the oil filter flange, I believe.

Chris

[Vincent Waldon]

VWs with the multi-function display use the the standard M10x1 coolant sensor for oil temp  and so do I  (VDO cleverly made them the exact same resistance!).. I worry about the longer version occluding the oil flow:



Having said that, I've never had a filter flange with the oil temp in the location yours is tapped in... looks like perhaps it is deep enough.

[Smokey Eddy]

Uh, I dunno if mine is correct...
The GP temp sensor is on the water outlet at the head, over about cyl. 3. Water temp sensor is on the heater outlet at the rear of the head, over the bellhousing. Oil pressure sensor is at the rear of the head, near the heater outlet.

Pressure would be highest at the oil filter flange, I believe.

Chris

aw frick this electronic crap!!!

ok, so at the water outlet. There are TWO senders.
- glow plug temp sender
- water temp sender

correct?

on the right hand side of the head is the water temp sender? but oil came out of it when i took it off... This is so freakin frustrating im going to break something.
Ok im going to take pictures. Pictures solve everything. PLEASE correct me!!!!!

Oil Pressure Correct?

I now have no idea what this is for. I thought it was for oil temp.

I apologize for the terrible photo. This is the water out thing that has a sensor of some sort that has broken off. I couldn't find any wires hanging loosely so i don't know what this is for. Is this the GP temp sensor?

And now these, the most frustrating of them all. Anyone? One is the coolant temp sender for the dash. i know that.


The labels are for explaining purposes. Ok, on photobucket i edited labels on them but for some reason they aren't appearing.

[Turbinepowered]

The VW Dynamic Oil Pressure Monitoring System (your dash warning light) reads the pressure from two locations. One at the oil filter (Your first picture, last post) and one on the head (second picture, last post). The two sensors are actually switches, set to different pressures.

I believe that primarily the system looks at the pressure at the filter mount (first picture), then above a certain RPM it starts looking at the status of the head-mounted sensor (second picture). You need both sensors to have a properly functioning stock oil pressure monitoring system.

For the temp sensors... I can't really help you. My diesel came out of a Quantum, not a Rabbit. Sensors should be the same, but the years are probably quite different.

The Quantum has a pair of single-wire temp sensors, like the one that Vince posted. One is for the dash gauge, one is shown wired for the glow plug circuit.

Old engines, like the Dasher, show a two-wire glow plug temp sensor on the rear of the head.

[zukgod1]

Temp sensors;

One is for the gauge and the other is for the Glow plugs.
Both the sensors are the same so it doesnt matter which one plugs in on which sensor.

[Smokey Eddy]

So by adding an oil temp gauge you have to forfeit the oil pressure warning?

Anyone know what that one sensor in pic #3 is for? It unscrews and looks exactly like the other oil pressure ones.

Thank you both very much for clarifying those for me. I've been wondering about the two in the coolant T for a long time.