Hi all,please forgive my ignorance and lack of knowledge ,I have a mk5 golf gt sport 2.0 tdi on a 58 plate.My turbo went last month and damaged the engine (it had done 140k) i bought another engine from eBay that was out of an A3 (bkd) a friend of mine has swapped them over,it’s starts a little reluctantly and ticks over absolutely fine but when he increases revs the oil pressure light comes on.He’s changed the pressure switch with my old one and he’s had a pressure gauge on it showing 4 bar.He said there’s quite a few faults on his snap on diagnostic meter.My question is are the wiring looms exactly the same? The loom on the Audi engine was cut on removal so he’s used the one in mine.He thinks the engine is fine and it maybe an electrical sensor issue? Appreciate any advice


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