Question about Cars & Trucks
Recently MOT'd this vehicle and shorty after it passed had driven 30 or so miles when Oil Light and buzzer came on, i pulled over and then the engine started sounding rough and tappety so i cut it out. Got a tow home and inspected closer. All fluid levels okay but oil all over engine bay (a little goes a long way!). The car will run smooth for 30 seconds before sounding rough and has run rough for less than 30 seconds in total. I'm thinking possible oil pump failiure but what do you think? Can't imagine it is the Head Gasket as levels are all fine and car didn't overheat, plus if HG was going it would have failed MOT on emmsions. If it is the oil pump how hard is it to fit a new one and how do i do it?? Any help gratefully received!
Posted by Anonymous on
An oil pump problem will not put oil all over an engine bay as it is the sump
however a problem oil filter will do just that
check to see it it is tight , the seal is intact and the edge of the filter has not split
check to see if the oil pressure sender unit or oil level sensor are still in and tight and have not failed internally and allowing the oil to come out
do not run an engine under any circumstances if you are unsure of the oil pressure
Posted on Mar 22, 2017
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Posted on Jan 02, 2017
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.
Posted on Dec 19, 2008
you problably cooked your engine,sp.plugs melted! cylinders must be scored,head and,or engineblock cracked!you can check compression in cylinders,but not looking good for motor!
Posted on Mar 10, 2009
Had exactly the same problem, completely baffled us until we discovered that the it was the oil pressure switch. We had already replaced it with a new one and then that didnt fix it so we fitted a new oil pump, but as soon as it was revved over 3000 revs the oil light came on. It turns out that there is actually a choice of 2 oil pressure switches for this car (1999 1.4 polo) one works only low pressure (black cap) and is the wrong one, the other works on a higher racio (green cap) its the high pressure one you need. If the oil light was on at tick over or below 3000 revs then its the lower oil pressure switch needed, above 3000 its the higher one. The parts people insisted there was only one, but there is definately a choice of 2 and it fixed ours instantly.
If it was an older model they actually have 2 switches on the car itself and one is a high pressure and one is a low pressure (just incase anyone needed to know)
Posted on Jul 24, 2009
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