tim_evans1 Posted January 22, 2014 Report Share Posted January 22, 2014 Hey guys,My engine management lights been on for quite some time (I know that sounds stupid but its been fine)I'm 99% sure the problem is just the oil temperature sensor, and i'm not sure if this is a big issue or not to be honest.I've put out a request for used parts for the sensor and/or whatever it needs. Is it a big thing to get fitted. im not sure at all what the parts i need/have gone wrong are.sorry if this sounds ridiculously stupid! Quote Link to comment Share on other sites More sharing options...
tim_evans1 Posted January 22, 2014 Author Report Share Posted January 22, 2014 forgot to say. The reason for the thinkihng behind it being an oil temp sensor fault is because say 1 in 10 times I get in the car the temperature gauge will read 0 (not even on the scale) which obviously isn't correct otherwise the car wouldn't run. so I figured it must be the sensor. Quote Link to comment Share on other sites More sharing options...
Kirstin816 Posted January 22, 2014 Report Share Posted January 22, 2014 There is no oil temperature sensor, it's a pressure sensor and takes about five minutes to change but your oil light would be on. Quote Link to comment Share on other sites More sharing options...
Defcon5 Posted January 22, 2014 Report Share Posted January 22, 2014 Well done Kristin, I'm impressed!OP, that gauge is for your coolant temperature. A new one is approx £30 from VW and they are easy to change.Essentially it's telling your ECU is -250 so it's pouring fuel in like there is no tomorrow, which is causing the emissions to go out of spec and is activating the check light.Solution - change sensor, clean throttle body and clean EGR, then take it for a long motorway run Quote Link to comment Share on other sites More sharing options...
Skezza Posted January 22, 2014 Report Share Posted January 22, 2014 Well done Kristin, I'm impressed!OP, that gauge is for your coolant temperature. A new one is approx £30 from VW and they are easy to change.Essentially it's telling your ECU is -250 so it's pouring fuel in like there is no tomorrow, which is causing the emissions to go out of spec and is activating the check light.Solution - change sensor, clean throttle body and clean EGR, then take it for a long motorway run surely -250 to the engine would flood it on starting and make it a non starter? Quote Link to comment Share on other sites More sharing options...
GeoffD Posted January 22, 2014 Report Share Posted January 22, 2014 the temp senders on vw's control a vast range of things, but it's water temp not oil, as kirstin quite rightly pointed out(she knows a thing or two about oil pressure switches now, eh k?) geoff Quote Link to comment Share on other sites More sharing options...
Defcon5 Posted January 22, 2014 Report Share Posted January 22, 2014 surely -250 to the engine would flood it on starting and make it a non starter?They appear to give random temperatures at random intervals when they break, I was simplifying and dramatising things for the OP Quote Link to comment Share on other sites More sharing options...
Kirstin816 Posted January 23, 2014 Report Share Posted January 23, 2014 Well done Kristin, I'm impressed!OP, that gauge is for your coolant temperature. A new one is approx £30 from VW and they are easy to change.Essentially it's telling your ECU is -250 so it's pouring fuel in like there is no tomorrow, which is causing the emissions to go out of spec and is activating the check light.Solution - change sensor, clean throttle body and clean EGR, then take it for a long motorway runThat's very patronising plus, it was mattarosa that wrote thatthe temp senders on vw's control a vast range of things, but it's water temp not oil, as kirstin quite rightly pointed out(she knows a thing or two about oil pressure switches now, eh k?) geoffYes haha Quote Link to comment Share on other sites More sharing options...
tim_evans1 Posted January 23, 2014 Author Report Share Posted January 23, 2014 well then thats made me feel sufficiently stupid!thanks a lot you guys for the replies, i'll have to get on to buying a coolant temperature sensor asap. would this have been causing lower fuel economy? I havnt noticed it drop but then again Its been on for quite some time!so list of things, source a engine coolant sensorhttp://www.ebay.co.uk/itm/Volkswagen-Lupo-All-Engines-1999-2003-Temperature-Coolant-Water-Sensor-TS4-/171147843224?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item27d934d698is this the right thing? only a fiver?or is this more like what i need?http://www.ebay.co.uk/itm/Variant2-Intermotor-Coolant-Temperature-Sender-Unit-Genuine-OEM-Quality-Engine-/191006614764?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Model%3ALupo&hash=item2c78e1a4ecapologies for ebay links but thats the best i could findthanks again Quote Link to comment Share on other sites More sharing options...
Skezza Posted January 23, 2014 Report Share Posted January 23, 2014 (edited) well then thats made me feel sufficiently stupid!thanks a lot you guys for the replies, i'll have to get on to buying a coolant temperature sensor asap. would this have been causing lower fuel economy? I havnt noticed it drop but then again Its been on for quite some time!so list of things, source a engine coolant sensorhttp://www.ebay.co.uk/itm/Volkswagen-Lupo-All-Engines-1999-2003-Temperature-Coolant-Water-Sensor-TS4-/171147843224?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item27d934d698is this the right thing? only a fiver?or is this more like what i need?http://www.ebay.co.uk/itm/Variant2-Intermotor-Coolant-Temperature-Sender-Unit-Genuine-OEM-Quality-Engine-/191006614764?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Model%3ALupo&hash=item2c78e1a4ecapologies for ebay links but thats the best i could findthanks againAbsolutely. A coolant temperature sensor that's defective will usually inject more fuel, or at least read bad values as has been pointed out and can massively affect your fuel economy.The top one looks a bit weird, I thought they were green and it looks kind of short? Anyway, I wouldn't touch cheap copies. They don't tend to last very long.http://www.ebay.co.uk/itm/VW-Audi-Seat-1-9-TDI-Green-4-Pin-Coolant-Temperature-Sensor-059-919-501-A-/130736903303?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Model%3ALupo&hash=item1e7086d487 Edited January 23, 2014 by Skezza Quote Link to comment Share on other sites More sharing options...
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