1998 Cadillac Catera Support Question
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Question posted by davidlaura on February 9th, 2013
How To Reset Ecu
engine missfires ,speedometer and odo do not work cruise control does not work transmission ruff shift accelerator does not respond all the time does sometimes engine starts sometimes not all the time . things i have done to fix these problems have not worked [ replaced speed sensor on transmission replaced spark plugs and wires ] the security light use to come on it went out still have same problems i found a bad fuse under dash 30 amp i replaced it the security light is back on didn't fix any of the problems i think the check engine light is not working it doesn't light up when key is turned to on however it does code on OBDII these are the codes [ PO501 PO300 PO304 PO302 PO303 ] these codes have been cleared i then replaced wires plugs and speed sensor the codes came back again after these repairs is this a ECU problem if so how do i reset the computer
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