Oil pressure sender

[mhibbins]

My newly acquired s3 appears to be giving varying but generally low oil pressure readings and it's newly acquired owner is getting in a flap... Given that it's not used/lost any oil and is running like a dream it has been suggested that I probably need a new oil pressure sender. Is it the same unit as on the 2.9 granada engine or do I need to buy one from TVR? Thanks, -- Mark