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  1. My first post on here so be gentle. I’ve recently bought a Lupo 1.4 16v, with a whole list of problems but it was too cheap not to buy. The engine runs but the epc and engine check lights are both on. Had a scanner on and one fault listed was open circuit heater on the pre cat lambda sensor. The guy we bought the car off told us he had fitted a new one, and it definitely is new. I’ve tested it with a multimeter and between pins 1 and 2 are open circuit, I wonder tho if the part is faulty or the wrong one for the car. On checking the resistances on other pins I’ve found a pair that read 4-5 ohms (most likely the heater connections), which leads me to think the plug on the new lambda sensor is wired up wrong. Trouble is I’ve not got an old one to check it against. Woundered if anyone on here had one they could meter out or a new one with the same colour coded wires as mine. Or any other ideas gratefully received. Will try and attach a pic. The part number is OS092 RTG Automotive
  2. So some may remember I had the issue with the car not starting atall and vagcom have me loads of codes and none helped point me in the direction that wires had become loose lol but one of the codes was about the O2 sensor. Now the wirings all fixed and car starts... Usually! If I leave her in the sun and the car heats up the engine won't fire in just turns over, and like last night I can literally be stuck for 3 hours waiting for it to cool down. Also happens of I get fuel for example and when I got to start it back up because its warm it won't start and have to wait for it to cool down again! I had a problem with the oil breather as it was overly clogged and smoking like a trooper, however that's been cleaned out and still having the issue, also the temp gauge is iffy but being a normal lupo fault I've over looked this, if I stop at lights or something ill notice the temp has dropped right to the bottom then ill start driving again and it'll come back up to the middle. I'm waiting to get it plugged in again but may be a few weeks, any ideas? I've been thinking 02 sensor but starting to doubt myself!
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