Oil warning light on 16v

[Rick 16v Mk2]

Hello, I hope someone can offer some advice. At low revs on my valver there is no oil warning light. At 1200 rpm the red light flickers erratically. Above 1200rpm the light begins to flash regularly. Drop the revs and the light goes out. A pressure test showed 2.5bar at 2000rpm. Does anyone have any suggestions as to what the problem could be? All help greatly appreciated.
                       Cheers, Rick.

[benjam_in]

silly question i know but have u checked your oil level?

[Rick 16v Mk2]

(I must avoid sarcasm as I need peoples'  help) yes, thank you, I thought of that.

[benjam_in]

sorry it is something a few drivers do overlook! wasnt trying to get at you just one of those obvious questions u have to ask!

have u looked at the sensor?

[davidhawkins_78]

Dodgy oil pressure sender maybe ??  

[Rick 16v Mk2]

  No worries mate. Yes, I changed the sensor to no avail. I was wondering if the pressure could actually be too high?

[benjam_in]

not sure on that one mate. mine normally comes on when the oil is low! (or just at one side of the sump on a round a bout)

[davidhawkins_78]

Silly question now - is your Dipstick housing damaged ??

I've seen that with other people, and it's resulted in the dipstick going in too far and they've over filled the engine ALOT !

[benjam_in]

Hmm never thought of that dave, had a caddy at work that the engine blew cos it was overfilled.

[davidhawkins_78]

It's a common fault on Mk2's, so often people have bodged something to fix it without thinking of the consequences ...

Can lead to either a artifcially high or low reading depending on the bodge !

Check it out