Archer-97k1500
Newbie
....yes
Changed EVERYTHING, Still misfiring.... 97K1500-5.7vortec (stock)
- Thread starter Archer-97k1500
- Start date
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....yes
Justin S
Truck Hoarder
I'm assuming it is, but is the ground going to the engine good?
Archer-97k1500
Newbie
Yep. Even created new ones
Justin S
Truck Hoarder
From everything else you have said, unless I missed it, sounds like it might be something in the harness. Did you reuse the same harness or did you get a new one with the swap? I saw that you already tried various sensors and the ECU, and since nothing else was changed with the swap, maybe there is a wire that has high resistance or something that causes a sensor to read incorrectly, but not wrong enough to throw a code?
Archer-97k1500
Newbie
Exactly what im thinking at thins point. Going to test a pile of wiring next
Archer-97k1500
Newbie
Ok!!! So after months of checking wiring in my limited spare time i found that a common ground for the pcm on the back of the passenger side cylinder head had broken off. Repaired the wire and shes good to go!!!
Thanks for all the input guys, really appreciate it!!!
-Archer
Thanks for all the input guys, really appreciate it!!!
-Archer
Justin S
Truck Hoarder
Nice! Glad you figured it out finally!
