Could anyone measure their oil sender resistance please?
Discussion
Hello all
I'm having a bit of bother with my oil pressure gauge. The gauge was flickng up and down quite wildly on occaisions, which I proved to be the sender as the gauge would read dead steady with a fixed resistor in place of the sender unit.
I ordered a new one but when I fitted it, the gauge hardly registered. They sent me another new sender which has made it read higher but the most I am seeing is about 40 PSI, even with cold oil.
The point is, the pressure seemed right with the origial sender (apart rom the flicking), the engine runs fine, only 50K with a full oil change history from new.
I think the senders are incorrect but I want to try it against others that read about right. The original sender reads 250 ohms when off the car, first replacement rads 330 ohns, and the second replacement reads 290 ohms....so which one is right?
If anyone cold measure theirs by unplugging the wire and testing from the spade connector to earth, I would be really grateful.
Cheers
anthony
I'm having a bit of bother with my oil pressure gauge. The gauge was flickng up and down quite wildly on occaisions, which I proved to be the sender as the gauge would read dead steady with a fixed resistor in place of the sender unit.
I ordered a new one but when I fitted it, the gauge hardly registered. They sent me another new sender which has made it read higher but the most I am seeing is about 40 PSI, even with cold oil.
The point is, the pressure seemed right with the origial sender (apart rom the flicking), the engine runs fine, only 50K with a full oil change history from new.
I think the senders are incorrect but I want to try it against others that read about right. The original sender reads 250 ohms when off the car, first replacement rads 330 ohns, and the second replacement reads 290 ohms....so which one is right?
If anyone cold measure theirs by unplugging the wire and testing from the spade connector to earth, I would be really grateful.
Cheers
anthony
That is interesting Anthony, I am facing almost exactly the same issue, my sender was damaged, the replacement sender I have does differ and I want to be sure it is measuring correctly.
There is an interesting aside to this. The 'original' sender is very expensive but there are lots of others out there (there were some for sale at a stall at SCH)which will fit the Ford block with or without a simple adaptor. If we know the 'correct' resistance it should be possible to identify other options?
There is an interesting aside to this. The 'original' sender is very expensive but there are lots of others out there (there were some for sale at a stall at SCH)which will fit the Ford block with or without a simple adaptor. If we know the 'correct' resistance it should be possible to identify other options?
I had some problems with new sender units a couple of years ago. The replacement unit worked fine initially then after a few weeks it went wrong. The replacement one under warranty was so slow in starting to read (12 seconds before the needle moved and then so slowly) and then reading incorrectly anyway that I sent that back as well it being replaced by a slightly used old style one which reads fine (now where's my piece of wood..). Based on that there does seem to be some issues with the replacement ones unless it was a batch issue. The ones I had were brass type of colour and maybe 1.5 ins in dia with a spade connector off it: the thing was marked PTR and then 1000-8N-10 Kn/M2.
Not sure if that helps anyone though.
Jim
Not sure if that helps anyone though.
Jim
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