I have a 1989 1.3 petrol golf, when I start the engine all is fine, but when I start to drive the warning light and buzzer activate. I have checked the strainer in the sump and changed the filter, but it still happens. There seems to be enough oil at the rockers, it is throwing out in arcs when I take the rocker cover off. The only thing I can now think of is that the pressure switch is at fault, how can I check this? Thank you for any help you can give
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You should see 2 sensors on the oil filter housing. These are oil pressure sending units. Check the electrical connections and wires first. Make sure everything is good, no corrosion, no cracks or breaks in the insulation and no broken wire strands at the connections. If everything is good then one of those sending units is bad. Hope this helps.
It seems the fault is with the oil pressure switch you have replaced. This switch seems to need a higher pressure to cut off and the oil pressure light is coming on because it indicates low.
So if your oil is good , the oil filters were changed recently this fault must not come up. if not replace oil and oil filters to check but keep this option that the fault was never there earlier and a new part can also be faulty.
When you say the oil level is fine, has it dropped at all in oil level even within the fine area?
Your oil sensor may faulty, or you may have a pressure leak somewhere since you said it occurs when you slow down (let your foot off the gas which will reduce the pressure). One known issue with golfs (hope it's not with yours) is that the rear engine seal often springs a leak and ends up leaking into the flywheel and transmission assembly.
it is more then likely a faulty oil pressure switch have the car running and put a lest light to it to see if you have power going in and out of it if you only have power on one side theres your problem
Well theres two possible reason for this, 1: the engine is worn enough to let the oil blow by the main bearings causing the oil pressure to be lower then OEM spec thus activating your oil light/buzzer or 2: your using the wrong type oil, you should be using 15W40 diesel grade in all 98 and older vdubs gas or diesel engines. Alos there is one more thing you could try if you have elliminated step 1 and 2, the oil pressure sensors do wear out, replace them both (high pressure and the low pressure) there are under $15 each and easy to change. Good luck
Get someone to check oil pressure with a mechanical gauge, to verify whether you have oil pressure or not. These engine/vehicles, have 2 warning sensors & a control module in the instrument panel. Once you know you have pressure for sure, then you can proceed from there.
There are two pressure switches. One for oil pressure and one for a dirty oil filter. Are you sure you've changed the right switch. If car drives for 30 mls it doesn't sound like you need an engine. The spluttering is likely to be completely unrelated to the oil warning I suspect.
DO NOT DRIVE or run this car until you resolve this. Irreperable damage may already have been one, but if not, don't press your luck.
Sounds like you don't have any oil pressure, could be
oil pump bad (pretty rare unless you have 300K miles or more no regular oil changes) or
oil pickup screen plugged up, If you or someone didn't change the oil regularly this is likely
obstruction in oil line (very unlikely)
defective oil filter or pressure relief valve (pretty unlikely)
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