I am helping a young local army man with his 04 KIA Sedona. He left Virginia on his way back to Illinois with his wife and four young children when he lost power in West Va. The mechanic diagnosed and replaced the catalyst convertor with a universal one. It is the one that runs under the vehicle and does not have any sensors before or after it yet the mechanic said the code was the cat. There are also two convertors directly at the engine and they do have, I believe the oxygen sensors. The convertor he put on was spliced in with the input end of the convertor over the the pipe coming from the engine and the ouput end of the convertor put over the splice. The output end of the splice was put inside the resonator pipe(I think it is a resonator). They got back on the road and an hour later he started losing power again, the oil light came on and he was getting a knock from the engine when under accelaration. There were no codes for the next mechanic and he diagnosed it as the rod bearings requiring another engine and $2200.00. This is where I came into the picture. I went to W Va and brought him, his family and hauled his van back to Illinois. We are now getting codes, 102 MAF sensor circuit low input, 113 IAT sensor circuit high input, and 431 Catalyst system efficiency below threshold (Bank 2) and still getting the knock under accelaration, which someone here believes it is a possibile spun main bearing. Now for the questions. Could the cat conv be installed wrong at the splice creating loss of power after warm up and if it did get too hot could it have caused a bearing to spin?
Thank you in advance for any light you can shed on this. Kevin "Beetle" Bailey
have the same problem?
Tuesday, March 8th, 2011 AT 3:25 AM