Any Multimeter Experts

[Type R magik]

Got a new auto range multimeter,

How do I test a oil pressure sensor
The sensor is a 2 wire unit in a adaptor at the oil filter and the 2 wires plug into a aftermarket oil pressure gauge on the dash, trying to establish if the sensor was faulty or the gauge, as it blew a few minutes after I 1st turned on

 

[Stoo.]

What exactly are you trying to test?

 

[Type R magik]

if the sensor is sending a correct signal i guess and/or a way to check it for faults?

 

[LeeC5]

The only test you could really do of the sensor itself is a resistance check but that won't really tell you much unless you know what it should be.

 

[Type R magik]

oh I see, hmm I am not sure then, I did a continuity test and it was fine so theirs no breaks in the wiring or anything like that
Here's a pic of the sensor if it helps, and it made me think.. if I got the white a black wires the wrong way around could that have caused it to blow :smt017

 

[rf55]

Think if wires was wrong could blown gauge?

 

[Type R magik]

The only test you could really do of the sensor itself is a resistance check but that won't really tell you much unless you know what it should be.

ive managed to get hold of the resistance ohm ratings vs bar pressure for the the sensor from the manufacturer
So I take it just a case of putting the multimeters probes to the white and black wires of the sensor and check if readings match?

 

[Stoo.]

Yes.
Ideally you want it so that it's Installed so You can see resistance change as the pressure changes.

I can probably put money on it not being the sensor!

Not if the gauge doesn't work at all....

 

[Stoo.]

Having the wires the wrong way round wouldn't make a difference either.

 

[Type R magik]

Yeah you was right mate the sensor seems fine well I hope
It should read about 30ohm on the multimeter at engine idle and that's roughly what I got, Is the civic oil pressure at idle about 1.7bar?? if so then sensor is spot on to the manufacturers resistance ratings!