How doesnt it make sense......I cleaned the Intake air tempo sensor and checked it a month ago......I am doing a project myself using a freescale semiconductors MC68HC12 MCU to desing and create my own ECU for purposes in an independant engineering project......I am in my fifth year of a five year program in systems acomputing engineering......the first phase of the ecu design was to hook its parallel ports up to the five main sensors that are actively fedback to the ecu and test their analog voltage range and amke sure it correctly correlates to the appropriate signal.....My IAT was tested in this manor using an ARM Embest FPGA board , utikizing labview to simulate the correct thermal signal to the IAT itself.....its volateg range was returned jsut as the part specs indicate.......

So ummmmmm, if your implying that me saying that i checked my IAT and cleaned it (which can have an effect on the thermal reading it negotitates) doesnt make sense, your wrong....If your saying that it doesnt make sense for my ECU to not be throwing a code, even though the lgiht is flashing then please elaborate cause this is where my confusioon lies as well.....

-Adam