Hi having just driving my 89 polo back from work aprox 2 miles the oil light and buzzer sounded so I pulled over checked all levels all were fine, so carried on with my journey home and it buzzed with the light again. I noticed a oil drip on the exhaust causing it to smoke abit however all seams fine with the car I know these cars suffer from oil breather probs but am I right in thinking the oil pressure sensors are @ fault. And is it advisable to replace the oil breather tub because I believe it to be the original.

Any advice will be much appreciated

Ryan

To be sure that you don't have a mechanical problem, it would be advisable to fit a temporary oil pressure gauge in place of the oil switch (or if you wish to keep the gauge, fit a 'T' piece and have both switch and gauge.)

Hopefully, it is the switch that is causing the problem, rather than lack of actual oil pressure.

Any short to earth on that switch wire,will also cause the light to come 'on' ( once you have checked the actual pressure, if you leave the switch wire disconnected and insulate the wire end terminal, run the car and see if the light comes 'on', if it does, then there is a short to earth in the switch wire itself.)

You mention a drip of oil onto the exhaust. If there is a fair amount of black build-up where the oil hits the exhaust, it will have been dripping for some time and, although it really needs to be sorted, it may not be as urgent as if the exhaust is reasonably clean in that area, which would indicate a new(er) problem, which perhaps needs more urgent attention.

If the crankcase breather is blocked, it will tend to cause oil to be blown out of the engine, this may not be from the breather itself. The remedy is to either remove and clean the breather box or replace it.

If, with a clean or new breather, you still get oil being blown our of the engine (as opposed to leaking from a pressurised oil-way), say the filter or the left hand side of the cylinder head/cylinder block joint, just above the alternator (oil feed to cylinder head via the head gasket), then you may have excessive blow-by on the pistons, which will tend to pressurize the crankcase, or blow oil into your air filter via the crankcase breather. (regardless of the condition of the breather itself.)

I hope that there is some help there for you, and that it turns out to be a 'simple' electrical fault.

Regards.

To be sure that you don't have a mechanical problem, it would be advisable to fit a temporary oil pressure gauge in place of the oil switch (or if you wish to keep the gauge, fit a 'T' piece and have both switch and gauge.)

Hopefully, it is the switch that is causing the problem, rather than lack of actual oil pressure.

Any short to earth on that switch wire,will also cause the light to come 'on' ( once you have checked the actual pressure, if you leave the switch wire disconnected and insulate the wire end terminal, run the car and see if the light comes 'on', if it does, then there is a short to earth in the switch wire itself.)

You mention a drip of oil onto the exhaust. If there is a fair amount of black build-up where the oil hits the exhaust, it will have been dripping for some time and, although it really needs to be sorted, it may not be as urgent as if the exhaust is reasonably clean in that area, which would indicate a new(er) problem, which perhaps needs more urgent attention.

If the crankcase breather is blocked, it will tend to cause oil to be blown out of the engine, this may not be from the breather itself. The remedy is to either remove and clean the breather box or replace it.

If, with a clean or new breather, you still get oil being blown our of the engine (as opposed to leaking from a pressurised oil-way), say the filter or the left hand side of the cylinder head/cylinder block joint, just above the alternator (oil feed to cylinder head via the head gasket), then you may have excessive blow-by on the pistons, which will tend to pressurize the crankcase, or blow oil into your air filter via the crankcase breather. (regardless of the condition of the breather itself.)

I hope that there is some help there for you, and that it turns out to be a 'simple' electrical fault.

Regards.

Thanks For the reply the oil pressure switch is original which makes me believe this is the culprit the light/buzzer doesnt come on all the time it varys when it comes on it stops for a few miles then on again

with regards to the oil breather I did clean this out but again an original part from when the car was new so may replace also the car doesnt leak as such more of a drip

many thanks ryan

sure you dont have a loose connection on the 2 sensors? it would make the buzzer go off.

sure you dont have a loose connection on the 2 sensors? it would make the buzzer go off.

Thanks have checked the connections and have crimped the connectors to make sure and still buzzing :) I've checked for broken wires grounding etc