Thread: Oil pressure light stays on long time after long stop

Originally Posted by Stue 3 doors down

Any ideas where to start looking or is it the pump its self?
Thanks
James

Don't think the worst yet ......

Have look at the oil pump ... find the oil pressure sender unit (has a single electrical wire attached for your oil gauge attached) ... and replace it

Generally when they fail ..... If you have a look at the top of it (sender unit), you will see the male electrical connector for the wire .... They are usually wet (oil) around that area, when they are failing

Mike

Just got in and saw a new oil patch on the ground so I will check that out. But it makes a bad rattle like no oil is flowing on the lifters etc but today its back to good as gold

Originally Posted by Stue 3 doors down

Just got in and saw a new oil patch on the ground so I will check that out. But it makes a bad rattle like no oil is flowing on the lifters etc but today its back to good as gold

The above sounds normal ^^^^^


Have you pull the dipstick & checked the oil level lately??? ....

Yes I checked the oil as it never uses any so I was a little paniced but it full as always thats why its stumped me. Could the oil filter have a non return valve that is playing up? Oil light on and oil pressure would unnerving but this is Oil light on and no oil being pumped well it was for the yesterday and the day before, not today though so its a bit annoying

Originally Posted by Stue 3 doors down

Yes I checked the oil
Could the oil filter......

Safest way is to bring forward the maintenance oil change and have the mechanic slip on a oil pressure gauge and actually see what it's registering

Certainly wouldn't hurt to change the oil filter .... (make sure you fill up with oil before fitting) ....$10 & 10 minutes to do ..... and clean up the sender unit & check it for wet oil around the male pin


I installed a mechanical oil pressure gauge when my sender unit failed .... but getting the fittings for the connections into the oil pump was a challenge, as it is not the common universal fitting thread that comes in the oil gauge kits .... I sorted out fittings by going to a "agriculture parts" style store


But if it is the oil pump at fault .... then the likely suspect would be the pressure relief valve inside the pump getting stuck ...... Hence/ 1 day great, next day faulty / next day great



Mike

Thanks, wise idea about the sender unit to a pressure switch I will ask my trusted mechanic.. Will bring service forward.

Originally Posted by Stue 3 doors down

Thanks, wise idea about the sender unit to a pressure switch I will ask my trusted mechanic.. Will bring service forward.

Just to clarify ....

But if it is the oil pump at fault .... then the likely suspect would be the pressure relief valve inside the pump getting stuck ......

I'ld stop driving it till that has been checked .... cause a stuck relief valve will kill your motor in 20 seconds flat

Mike

X2
Regards Philip A