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#1
04-26-2005, 10:15 AM
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O2 Sensor
Check engine light came on, so I took the truck by Autozone. They said I have 2 O2 sensors bad and the knock Sensor. Now way im chaning the Knock sensor because I know where it is located.
Does anyone know where the O2 sensors are loacated, or is there an online diagram showing where they are. Any help greatly Appreciated........ 
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#2
04-26-2005, 11:56 AM
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Re: O2 Sensor
The O2 sensors in the exhaust just before and just after the primary catalytic converters. Which two of the 4 are showing bad?
And a bad 02 sensor reading can be caused by any number of things including vacuum leaks, bad injectors, or a poor ground. You need the specific codes to be any more specific.
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#3
05-01-2005, 12:10 AM
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Exact same thing happed to me last october... I broke down and went to the dealership and had them take a look at it. They came back with a tech bulletin that said that the wireing harness might not be grounded correctly. I bought a new wireing harness and that did the trick i have put about 23,000 miles since that was done and no check engine light
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