Motoring

vauxhall vectra oil light

my oil warning light comes on only when i get up to 50mph or more any reasons why? its a p reg 2.0. thanks

onebrian Thurs 07/08/08 14:12

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Parsfan
Thurs 07/08/08
14:18

Could be a number of things. Assuming your oil is topped up, it could a faulty switch or, given the age of the car the engine could be worn and is losing oil pressure at higher speeds. Cheapest way to tell is replace the switch and see if that does the trick. As someone who has just got rid of an N reg 2.0 Vectra i know what it feels like for things to go wrong. Best of luck.

Hymie
Thurs 07/08/08
17:58

Normally when the oil warning light comes on – the oil pressure is so low, it is highly likely that the engine will seize (or significant wear occur). Best get it sorted ASAP, for not a lot of money your local garage should be able to check the pressure.

Check things as Parsfan advises – I have heard of a partial blockage (close to the oil pressure switch) causing a venturi effect, resulting in a reduced pressure reading (at the pressure switch), but otherwise the system oil pressure was OK.

Brooksy
Fri 08/08/08
08:04

Having had lots of cars with an oil pressure guage, I can tell you that the higher the engine speed, the higher the oil pressure should be. I`d get that low pressure warning switch checked out.

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