I have for some time had fluctuating oil preasure, I am going to take car on a 4 hour drive tomorrow. Oil preasure on start up is just short of half way on standard gauge, then within 5 minutes it is down near 0 on tickover, then back up to about 1/4 then back near 0, it is all over the place. I have checked oil and all seems fine...........WTF is going on I wonder!!!!!

gauge sender is knackered.

gauge sender is knackered.

 

Yes that is what I think? what causes low oil preasure do you know?

yeah common problem mate. I doubt you have anything to worry about and just enjoy you trip :biggrin:

Yes that is what I think? what causes low oil preasure do you know?

 

Think its when the oil pump is on its way out or a blockage in some way

yeah common problem mate. I doubt you have anything to worry about and just enjoy you trip :biggrin:

 

I will cheers...I will get a new sender I think and put that on.

I will cheers...I will get a new sender I think and put that on.

 

you will have to ask mike but there quite expensive. around £100ish iirc?

theres a post on here for an after market sender unit thats about £25/30 quid ...

 

will try and find it

Oil Pressure unit rrp £34.99 delivered

Conceptua tuning

FREEPHONE 0800 0 23 44 23

http://www.conceptua-tuning.co.uk

 

 

look in the advice tech help more info

Edited September 24, 201114 yr by MarkDerby

As said - it's most likely the sender unit. You'd know if it was actually low oil pressure as you'd hear the engine knocking at low revs....

 

...all 300zx sender units will go bad at some stage; the classic symptoms are normal oil pressure readings until the engine is warm - then suddenly little or nothing. And still the gauge can intermittently work, then not work....

 

Richard:cool3:

As said - it's most likely the sender unit. You'd know if it was actually low oil pressure as you'd hear the engine knocking at low revs....

 

...all 300zx sender units will go bad at some stage; the classic symptoms are normal oil pressure readings until the engine is warm - then suddenly little or nothing. And still the gauge can intermittently work, then not work....

 

Richard:cool3:

 

Thanks Richard, yes that does seem to be the way the sensor is behaving....also I have had some gentle knocking when the car is started, then it seems to fade away, I spoke with Sussex Stu, he has the same thing...this seems common too am I right?

 

B