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Time to share my latest experience and learnings. I have a standby replacement vehicle 2008 Aurion Prodigy sitting in the back yard. Some weeks ago, It threw the P0328 error code and I suspected that a rodent could have been nesting in the valley of the engine. Posts on the US Toyota Nation forum indicates that this is an often occurence of the wires being eaten by rodents/pests. I did think that it might be a good idea to dismantle first before buying parts but did not do it. I was hoping that it was only the sensor gone bad so bought replacement [non-genuine] sensors before dismantling the engine. Only way to get to the sensors on the Aurion engine is to remove the lower intake manifold. I also took extra care and attention using rags to block off intake ports so nothing dropped down into the piston combustion chambers. Also used grease on the end of the allen key when removing the bolts to save time finding a dropped bolt. Finally discovered that both wires on one sensor were broken off plus chewing and the wiring on the other knock sensor had also been chewed. Next step was to remove the wiring harness and check the part number tag, These knock sensor connectors are not easy to get off. Ended up using a screwdriver to push the locking tab into the removal/open position and another screwdriver to lever the connector off the sensor. Next setback was that the wiring harness part number tag was faded and illegible. I found the Rock Auto website to be more user friendly than Amayama website catalog to locate the correct part numbers 82219-06010 and 82219-41010. Part ordered on the Amayama website and awaiting approval with delivery in about 2 weeks. The re-assembly fun can then begin. At this stage I am inclined to leave the original knock sensors and just replace the wiring harness. Interesting the amount of oil residue in the manifold and on the stems of the fuel injectors. Another learning is that the metal gasket edges are knife like sharp so a bit of blood and some verbal blessings over the manifold has been added to the DIY experience. Not wearing gloves has benefits and also costs. Biggest learning is that I should have taken more preventative actions to keep the rodents away.
g'day everyone out there I've just gone and bought a 2000 Model hilux (KNZ165R), and was talking to a lad I work with about the intake manifold. He has bought a 2006 model hilux, and he said when he took the manifold off it was filled with crap. He said that he clean the manifold out and blocked the egr, making his car run alot better. I was wondering if this would be a worthwhile thing to do on the 2000 model. If so would it be a big job and how would it be done? Any pointers?? cheers