87 hego code(42)
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87 hego code(42)
i'm getting code 42. the book says voltage signal always rich(high value)- or does not switch. i've put 2 oxygen sensors in it.first one a used one,month later put new one in.it's the last code to work on.what should i check first? what should the ohms read,andwhere do i check it at? thanks for the info in advance.
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smed89
1987 - 1996 F150 & Larger F-Series Trucks
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Oct 3, 2002 10:07 PM
