multiple error code ( P0305, p0135, and p0442)

1998 CHEVROLET LUMINA
210,000 MILES
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XJSHEN
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My 1998 chevy lumina got multiple error code ( P0305, p0135, and p0442) after repair a horn from a dealer. After repair I only have run 1000mile. What could be the reason for this? Thanks for your help!
Steven
May 27, 2012 at 1:39 PM
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ASEMASTER6371
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nothing to do with there repair

305 is a cylinder 5 missfire. 135 is an o2 heater code. 442 is an evap leak.

this would have occured even if you did not have the horn repaired.

Roy
May 27, 2012 at 1:53 PM
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XJSHEN
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Repair shop pulled out one firing line and disconnected two plug lines of V6 plug. After I check out the problem and reconnected them. And codes were gone. They wanted to make big money. I understand it.


Feb 1, 2014 at 12:16 AM
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