Crank relearn necessary on engine swap

[woody69]

I changed from a lq4 to a lq9 01 to 04 and installed a 3000 stall at the same time. It will start and rev but will not idle and no dtc. what is next? Thanks Woody

[joecar]

Woody,

The PCM uses CASE relearn to "calibrate" it's misfire detection algorithm.

Changing converter changes the rotating mass, so a CASE relearn would be required here.


The idle problem requires tuning of the idle tables/parameters, of which I am not yet proficient, so I'll let knowledgeable people chime in.

Cheers
Joe