OIL LIGHT

[daverwd]

Sorry stand corrected on the valve in filter .. pressure release valve it is.. Not one way valve..

[daverwd]

By the way Tas131 ,didn't know they lenghtened the oil pump drive gears on the later cars .. really good to know as i have a 130 T/C engine to strip & rebuild before fitting into my 131 & she will now defo be getting that longer drive installed.. ...
Never realised that drive gave trouble , had always thought i was seriously unlucky to have such an odd problem..
Of course i had to be about 130 miles from home the day it happened to me..Had to leave the car stranded in a farmers yard for a couple of days that time before i got back to collect her...

[124AC]

As suggested by Dave, check the oil pressure with a guage or a different pressure sender as a minimum.  Flickering can be caused when the diaphragm inside the sender unit fails.
A second-hand oil pump is normally worn.  If you need to remove it to check you will normally find the pump gears to be scored and therefore less able to achieve a steady pressure.
I have seen damage to the drive gear.  I think Guy suggests these are changed on any rebuild.  Nice to hear the later ones are modified.
Lastly, I put 20W50 in a Sport engine with 76K miles.  First cold morning under 5C and it wouldn't even crank over!  I think this would have destroyed a worn drive gear.  Nice new semi-synthetic worked well in all conditions.

[Tas131]

Lastly, I put 20W50 in a Sport engine with 76K miles.  First cold morning under 5C and it wouldn't even crank over!

You've got other problems then! Every winter mine starts every morning between 0 & 5 deg, first turn of the key.

[hammerbeirne]

Changed the oil and filter to a heavier oil and all seems fine now

[N. Dinis]

You should install a oil pressure gauge... It may seems ok because the light is not on but doesn't mean that there are no problems....

[hammerbeirne]

It was on again yesterday when it got hot Turns out all it needed was a new oil light switch all is fine now