Mitsubishi Outlander 2017

Hi all I bought this automatic outlander in September for under market price. I thought price was due to damaged back door. However after 30mile fault p0401 code came up. It has transpired that emergency stop light came on while driving with previous owner. Dealer in Birr got a technician to put fan senor on radiator outlet hose and I believe they took out thermostat. Car wasn't running at correct temperature, not getting up to 8o degrees to burn off fuel. After driving prefect for about 6000km car stated clogging up. Puffing out smoke now. Egr and dpf prefect. Also the mechanic did headgasget test and thats ok. This Mechanic beside me delete the balance shaft. He doesn't know what is wrong with car and doesn't deal with Japanese cars. I think she's a bargain at €8500 for someone who had capacity and patience to sort her. Could be as simple as radiator cap that caused initially issue. Beautiful car with proper heavy duty automatic transmission, not cvt. Call if you want more details but not with silly offers. She is priced to go so maybe do a bit of research. She is valued at 16k if engine and bodywork was right. I have no pictures as she is with garage. Guy is neighbour and into different stuff and I haven't time at the moment to deal with her so will take the hit. I have a few videos but no photos at the moment. Tks Vincent