Jimberndt

i spun a bearing in my 2000 Camaro ls1 and pulled it to swap am lq4 6.0 bottom end, and while we were at it we swapped the auto for a t56, new Texas speed 243 and a torquer v2 cam. We had a donor car so we used the 6speed cars wiring harness and computer so we didn’t have to re pin anything. The car starts and idles but the headers on the passenger side don’t heat up at all and you can tell it’s not firing. We have checked coil packs and have spark and getting fuel. We checked all grounds to ensure they were good, checked fuses, we put ls6 injectors and went back to stock ls1’s to try and solve this problem. Both PCM’s I have have been tuned, donor car ran great, and auto pcm was already tuned for the cam. oxygen sensors are on front plugs. When I put a code tester to it I don’t get any codes for a misfire only code it throws is for fan circuit malfunction and I’m lost as what to do next. Any one else have this issue? How did you solve it?

G Atsma

Check ALL connections and grounds. TWICE.

drdave88

If they're not getting hot, you're not firing. Did you pull a plug or two and see what they look like? Soaking wet w/ fuel or dry as a cork? How is compression on that side? Just thinking of everything, not likely compression since you said the donor car ran fine before. Have you seen the plug firing with a spark tester? Is it a weak spark or seem to be good? Did you ohm out the fuses to make sure they were good or just visually inspect them? Any pinched wires anywhere? Trace them back.

Jimberndt