5.3 falls on its face

[muddinmetal]

On an OBDII system, if you do not have access to a scan tool that can clear fuel trims can clear it another way. You have to disconnect the negative battery cable from the battery and touch it to the positive cable for about 10 seconds to clear out the learned memory. Just disconnecting the battery will not clear it out.

x2

 

[croes]

On an OBDII system, if you do not have access to a scan tool that can clear fuel trims can clear it another way. You have to disconnect the negative battery cable from the battery and touch it to the positive cable for about 10 seconds to clear out the learned memory. Just disconnecting the battery will not clear it out.

To clarify the way that reads sounds dangerous as it reads to touch the ground to a hot wire that is still connected to the battery. Disconnect both leads from the battery and touch them together to discharge the capacitors in the pcm.

My tuner modified the LTFT's in my pcm so they refresh more often so this is a non issue on my rig.