ai-dan Posted February 21, 2014 Report Share Posted February 21, 2014 Hi, new member. struggling with some issues with my lupo, 1.4s AUA codeits driving terribly and eating fuel, i've ran the diagnostics and have 3 codes:1* 17526 O2 heater circuit (bank 1-sensor 2) open circuit P11182* 17513 O2 heater circuit (bank 1-sensor 2) short with power P11053* 17861 Altitude/intake manifold unlikely ratio P1553 Intermittentfirst two i know are because the second lambda sensor has been cut off, and im thinking that the 3rd is because the ecu cant communicate how much fuel to add so is creating that error. what do people thinkmy other problems are:Firstly:This bell housing inspection hole had its cover knocked off and i think water has got into it, how bad is this and what can i do to fix any issue it might bring up?I also have a tapping noise when revs increase, even in neutral not moving, I'm quite puzzled by that as it doesn't sound healthy.Thirdly, my second lambda sensor has been cut right at the exhaust and I can't locate the other end, can anyone help where the wires should be? thanks for any help Quote Link to comment Share on other sites More sharing options...
mattarosa Posted February 21, 2014 Report Share Posted February 21, 2014 The tapping could be the oil sender pipe blocked as that makes it tappetty at higher revs, the lambda sensor cable has to around somewhere! Quote Link to comment Share on other sites More sharing options...
ai-dan Posted February 22, 2014 Author Report Share Posted February 22, 2014 i will check, but i think its something different, i think its related to the air flow/throttle. because as soon as you release the throttle the rattle happens instantly before the revs even start dropping, i know its also after the throttle body as i have inspected and cleaned it, hopefully its something simple thats just come loose. will have the body off tomorrow to have a lookalso found another cut group of wires, somebody really has botched this Quote Link to comment Share on other sites More sharing options...
mattarosa Posted February 22, 2014 Report Share Posted February 22, 2014 I'm currently using a 6n haynes as somebody had cut the oil pressure sensor off the lupo my girlfriend has just bought! I don't understand why people cut cables off. Quote Link to comment Share on other sites More sharing options...
ai-dan Posted February 23, 2014 Author Report Share Posted February 23, 2014 so my post cat lambda was snapped clean off, probably from being so low. now ive found it i can replace it. hopefully that will fix something.also got some photos of the random cut wire.so as you see, cut wires and a blanked line? any idea as to what its for Quote Link to comment Share on other sites More sharing options...
ai-dan Posted February 23, 2014 Author Report Share Posted February 23, 2014 also went to remove and clean the map sensor but it was too tight to get to and ran out of time, i'll try again on wednesdayheres another little photo of my little ratty shed of a lupo Quote Link to comment Share on other sites More sharing options...
mattarosa Posted February 23, 2014 Report Share Posted February 23, 2014 So it runs, I'm guessing that they are abs cables. Quote Link to comment Share on other sites More sharing options...
mattarosa Posted February 23, 2014 Report Share Posted February 23, 2014 Ignore that I thought that was the pump! ERM I'll check the manual to see if I can identify them. Quote Link to comment Share on other sites More sharing options...
ai-dan Posted February 23, 2014 Author Report Share Posted February 23, 2014 its the cables that are just infront of the throttle body. even if you could follow them back in your car, im sure its a similar layout, would be really appreciated. would be simple if i had a car next to me to compare the two Quote Link to comment Share on other sites More sharing options...
mattarosa Posted February 23, 2014 Report Share Posted February 23, 2014 Just trying to match colours on the current flow diagram as we speak. Quote Link to comment Share on other sites More sharing options...
mattarosa Posted February 23, 2014 Report Share Posted February 23, 2014 Ill whip my engine cover off tomorrow and take a look. Quote Link to comment Share on other sites More sharing options...
ai-dan Posted February 23, 2014 Author Report Share Posted February 23, 2014 have a check , could it be a charcoal canister wiring and blank into the throttle body? my engine code is AUA if that helps. i litterally have 20 vw haynes manuals but never thought i'd own a lupo so dont have one Quote Link to comment Share on other sites More sharing options...
mattarosa Posted February 23, 2014 Report Share Posted February 23, 2014 They never did a lupo one, I think the white cable may be a lambda? Quote Link to comment Share on other sites More sharing options...
mattarosa Posted February 24, 2014 Report Share Posted February 24, 2014 I think the cables that have been cut are to a temperature sensor. Should be located here by the arrow. I haven't had the cover off but that the only thing that I can see or feel that looks like your cable bunch. Quote Link to comment Share on other sites More sharing options...
ai-dan Posted February 24, 2014 Author Report Share Posted February 24, 2014 i've still got that temp sensor. but i think it is another one because i've now noticed when driving the temp drops, but when stationary the temp climbs again. its all a load of rubbish. when i get a chance im gonna replace some bits that i need, but i cant get time off work to sort it Quote Link to comment Share on other sites More sharing options...
mattarosa Posted February 24, 2014 Report Share Posted February 24, 2014 I know that there are two temp sensors but I don't know where the other one is, it does look like the temp loom though so that's a start. Sorry I can't be of more help. Quote Link to comment Share on other sites More sharing options...
ai-dan Posted February 25, 2014 Author Report Share Posted February 25, 2014 so i think im just going to focus of cleaning out my intake manifold, take it off clean it out, clean the map sensor and inside the throttle body. hopefully that will fix the running problem.then work out the other wiresand the rattleand the dentsand the paintand the wonky steering wheelthe list continues Quote Link to comment Share on other sites More sharing options...
jon_273 Posted February 25, 2014 Report Share Posted February 25, 2014 i've now noticed when driving the temp drops, but when stationary the temp climbs again. That's usually a good indication the thermostat is stuck partially open. Quote Link to comment Share on other sites More sharing options...
ai-dan Posted February 25, 2014 Author Report Share Posted February 25, 2014 i thought that jon, and its in the post. new leads sparks and lambda ready to fit. didnt fancy £80 for new map just yet so will clean it first, then plug it in again and see if i have anymore codes come up Quote Link to comment Share on other sites More sharing options...
ai-dan Posted February 26, 2014 Author Report Share Posted February 26, 2014 Ok, few bits arrived today. Got my new lambda sensor, spark plugs and some new wiper blades. Still waiting on the thermostat and new leads to arrive. As an extra I've order some new coolant and oil filter and 5w30 oil. so that's basically my service parts done. now my only problem is where and when I will find the time to do this, I have Friday and Saturday off but I'm picking up my mk1 golf as well so work/space/time is all against me. Quote Link to comment Share on other sites More sharing options...
ai-dan Posted March 1, 2014 Author Report Share Posted March 1, 2014 so managed to have a look under the bonnet today. the rattle noise is my cam belt, its really slack on one side, must be the tensioner, hopefully it hasnt slipped as it still runs normal. went to change the broken lambda but the new one had wrong fitting never managed to get to the map sensor as its quite awkward to get to and i didnt have time to take off the fuel rail and bits. did clean out the egr but that wasnt to bad.so now most important thing is sorting the cambelt/tensioner and timing Quote Link to comment Share on other sites More sharing options...
Skezza Posted March 2, 2014 Report Share Posted March 2, 2014 I'd get that belt changed immediately. Quote Link to comment Share on other sites More sharing options...
ai-dan Posted March 7, 2014 Author Report Share Posted March 7, 2014 cambelt, tensioners, timing all booked in.i've put new plugs, leads, filters, fluid and oil in.also replaced the standard air box as it was split and cracked around the throttle body.fitted new lambda sensor but it sits about an inch from the ground so i dont think it will last long.sounds and runs bit better now, hopefully after the cambelts sorted it will be spot on Quote Link to comment Share on other sites More sharing options...
ai-dan Posted March 7, 2014 Author Report Share Posted March 7, 2014 shows how low the sensor is.and i know alot of people hate air induction kits but this is kind of temporary Quote Link to comment Share on other sites More sharing options...
ai-dan Posted March 7, 2014 Author Report Share Posted March 7, 2014 almost forgot, still got the mystery chopped wires, and the colours, so will be keen to find out where they go Quote Link to comment Share on other sites More sharing options...
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