Spark on 2 cylinders
Thread Starter
Teching In
Joined: Feb 2016
Posts: 11
Likes: 0
Spark on 2 cylinders Well guys im having a hell of a problem right now. Entire swap is out of a 01 silverado 5.3l. Truck has been running awesome for a few months about a week ago it just randomly shut off on me but fired back up then happened again the next day took 30 mins before it started back up then happened an hour later and wouldnt fire at all.. so did some research and similiar problems people were changing the crank sensor did that and now only have spark on 2 cylinders. Im so lost on this one please help!!!!!
TECH Regular
Joined: Sep 2007
Posts: 443
Likes: 3
From: Kansas City, MO
Check all pcm power and ground circuits. Go to lt1swap.com and find the pinout for your pcm. We have no idea how the harness in your swap is laid out or even what kind of vehicle it's swapped into; so you're going to have to do some electrical troubleshooting. Also check to see if there are any codes in the pcm with a scan tool.
