LS3 Issues
Thread Starter
Registered User
Joined: Aug 2016
Posts: 3
Likes: 0
LS3 Issues I'm new to your forum but have always found the information helpful. My problem is with an LS3 crate motor that I have. First time startup went well and performance was great except when dropping the throttle quickly from the lower midrange position. It would go to the limp mode and reset itself after turning off ignition for a couple of minutes. I have since then updated the ECM to a later version (2010 Camero) but to no avail. It sends code P0122 and P0222 (throttle position voltage). I have 5 volts at the accelerator pedal and the throttle body so I replaced the throttle body with a new one but to no avail. Have checked all the "new" wiring connections and find no problems. Grounds are good. The throttle plate does not move when pushing the accelerator and now the engine only limps with help from starter. The ECM works well when put into another vehicle. Any help would obviously be greatly appreciated.
