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Tech & Fab
6.0 engine swap woes.
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<blockquote data-quote="tonyt" data-source="post: 93128" data-attributes="member: 405"><p>just finished swapping in a 6.0 out of an 2001 chevy 2500.</p><p></p><p>harness from fuelinjectionconnection. computer programmed (can't remember who EOR had program it) to remove VATS, 2 O2s, a few other things.</p><p></p><p>it runs, but like crap. </p><p></p><p>idle is rough, almost like its got a cam in it. obdII scanner shows codes</p><p></p><p>p0300</p><p>p0332</p><p>p1638 also. - checked the alternator, voltage output is good.</p><p></p><p>checking the misfire info shows misfires on ALL cylinders. </p><p></p><p>has new plugs, wires, new O2's.</p><p></p><p></p><p>O2 data for the two sensors both read almost exactly even at 450mv or so. tested the O2's unplugged, and they are both "making" voltage. scanner shows hardly no real-time fluctuation in the O2 values. verified the wiring from the O2 sensors back to the PCM.</p><p></p><p>according to the scanner it never goes closed loop. coolant temp sensor reads up to 197 or so, fans kick on, scanner never shows closed loop.</p><p></p><p>I'm not all that knowledgeable on these engines, but my first inclination is a problem with the PCM. </p><p></p><p></p><p>any help with a push in the right direction would be appreciated.</p></blockquote><p></p>
[QUOTE="tonyt, post: 93128, member: 405"] just finished swapping in a 6.0 out of an 2001 chevy 2500. harness from fuelinjectionconnection. computer programmed (can't remember who EOR had program it) to remove VATS, 2 O2s, a few other things. it runs, but like crap. idle is rough, almost like its got a cam in it. obdII scanner shows codes p0300 p0332 p1638 also. - checked the alternator, voltage output is good. checking the misfire info shows misfires on ALL cylinders. has new plugs, wires, new O2's. O2 data for the two sensors both read almost exactly even at 450mv or so. tested the O2's unplugged, and they are both "making" voltage. scanner shows hardly no real-time fluctuation in the O2 values. verified the wiring from the O2 sensors back to the PCM. according to the scanner it never goes closed loop. coolant temp sensor reads up to 197 or so, fans kick on, scanner never shows closed loop. I'm not all that knowledgeable on these engines, but my first inclination is a problem with the PCM. any help with a push in the right direction would be appreciated. [/QUOTE]
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