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bigrich1356
New User
Apr 5, 2013, 9:58 AM
Post #1 of 7
(2093 views)
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I have a 96 gmc sierra 1500 2 wheel drive with a 5.0 vortec engine 160xxx. I bought it last spring with no problems, everything was running good, no check engine light or anything wrong, well the guy neglected to tell me the oil pump was no good and i blew the engine, so i put in a newer engine and now the check engine light is on with trouble codes (P0135, P0140, and P0141) the only o2 sensor i unhooked was the bank 2 sensor 1 b/c the wire runs behind the motor and i didn't want it to get pinched but its the bank one side where the codes are, i checked the wires and they look fine, the truck runs fine, but every once in awhile the check engine light will go off for a day our 2, any idea what might have happened in the week it say while changing out engines that would cause them codes to come up? And what should i do to fix it b/c my inspection is about to run out?
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 5, 2013, 3:46 PM
Post #2 of 7
(2043 views)
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Re: 96 gmc Sierra
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Have you tried clearing to codes to see if they all come back?
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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bigrich1356
New User
Apr 5, 2013, 4:59 PM
Post #3 of 7
(2034 views)
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Re: 96 gmc Sierra
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I cleared the codes twice but they come back within 5 miles
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 5, 2013, 5:03 PM
Post #4 of 7
(2030 views)
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Re: 96 gmc Sierra
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I would verify that these sensors are plugged in firmly. I doubt you have 2 bad heaters so check all your fuses. If they are OK, test for power and ground at the sensor at the 2 like colored wires.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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bigrich1356
New User
Apr 5, 2013, 5:09 PM
Post #5 of 7
(2025 views)
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Re: 96 gmc Sierra
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I unplugged all of then today to check to see other were dirty but they were all good, and i put em back together pretty snug... The only fuse i could find in the book is for the (heated o2) in the engine compartment but that was fine, should there be a fuse anywhere else?
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 5, 2013, 5:10 PM
Post #6 of 7
(2021 views)
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Re: 96 gmc Sierra
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You should use a test light to test every fuse in the car.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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bigrich1356
New User
Apr 5, 2013, 5:12 PM
Post #7 of 7
(2018 views)
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Re: 96 gmc Sierra
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So it could be something stupid that has nothing to do with the o2 sensors?
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