blackdynamite66 Posted November 2, 2015 Report Share Posted November 2, 2015 Alright folks. I'm new to the forum and have just bought a 03 reg lupo s 1.4 16v. It runs and drives fine and I know the guy I bought it off who has done a full service on it recently.When the car starts the dash is clear but on pulling away the oil light comes and and beeps. I have read it may be the fuel pressure swith or a blocked strainer in the sump. Is the strainer just a mesh in the sump which I will see if I take it off?Also I think its the eml on too, when on the code reader it says o2 sensor, cant remember the exact thing its showing. Is there a way to tell if its a dodgy pre or post cat sensor? As I'm new to vw I'm not sure... If I go down to the scrappies can I take a lambda of any petrol vw? Or does it have to be the same lupo? Same with the oil pressure switch?(although they're cheap enough anyway) Thanks in advance Quote Link to comment Share on other sites More sharing options...
Sausage Posted November 2, 2015 Report Share Posted November 2, 2015 Oil pressure switch is cheap enough and easier than dropping the sump, but check the wires to it first.Do you know what oil was put in it?Pretty sure the lupo would have mesh on the end of the pick up pipe, it's just to keep the big stuff out. Quote Link to comment Share on other sites More sharing options...
carrera-gt Posted November 2, 2015 Report Share Posted November 2, 2015 Oil pressure gauge might be more useful, get a mechanical one from the scrapies and plumb it in just to see whats happening.Modern oils are much too thn for the bearings in Lupo engines so just check whats in there 10w 40 is as thin as you should go Quote Link to comment Share on other sites More sharing options...
blackdynamite66 Posted November 3, 2015 Author Report Share Posted November 3, 2015 So if I used an oil pressure guage and it read normal, I could pit it down to a faulty sensor I take it? What about the o2 sensor fault that's coming up? Any way to check if its pre or post cat? Quote Link to comment Share on other sites More sharing options...
carrera-gt Posted November 3, 2015 Report Share Posted November 3, 2015 Yes basicaly if you have proper oil pressure, then problem = faulty sensor02 sensors can be tested by a multimeter lots of how to on the web, then replace if required. Quote Link to comment Share on other sites More sharing options...
blackdynamite66 Posted November 5, 2015 Author Report Share Posted November 5, 2015 Ok ill look into it. I know lambdas arnt cheap cos I bought one for my (cough) saxo (cough), could I take a known good one from the scrappies off any petrol vw of that era? Quote Link to comment Share on other sites More sharing options...
carrera-gt Posted November 5, 2015 Report Share Posted November 5, 2015 If your going to do that you need to trawl the on-line part stores to see what's compatable, It has to have the right characteristics, for example the wrong heater resistance means the ECU won't be able sense the unit is working properlyScapie parts are ok sometimes this is probably not one of them. Quote Link to comment Share on other sites More sharing options...
blackdynamite66 Posted November 10, 2015 Author Report Share Posted November 10, 2015 If your going to do that you need to trawl the on-line part stores to see what's compatable, It has to have the right characteristics, for example the wrong heater resistance means the ECU won't be able sense the unit is working properlyScapie parts are ok sometimes this is probably not one of them.I see, I'll take a look see if I can find the same age lupo, then its should be ok yes? Quote Link to comment Share on other sites More sharing options...
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