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92 Pontiac Grand-Am 2.2 Quad 4 Test Coil Pack
I have a quad 4 that is having some problems. It was brought in for bucking on steep grades, and I initially scanned for codes, and found one present for the knock sensor. When viewing the datastream, I found that the 02 sensor was fixed at .58 volts, and woul... Login to read more. ![]()
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