ls3/th400 stalling issue
Thread Starter
Teching In
Joined: Apr 2016
Posts: 3
Likes: 0
ls3/th400 stalling issue hoping someone can shed some light on this annoying problem.
its a new ls3 running the e67 controller mated to a th400 with 2800rpm stall torque converter.
when warm and shifting from drive to reverse or vice versa the engine keeps stalling.
is the controller looking for a shift signal ect but not getting it ?
this is the engine in question
http://www.partsworldperformance.com...ngine-19301360
its a new ls3 running the e67 controller mated to a th400 with 2800rpm stall torque converter.
when warm and shifting from drive to reverse or vice versa the engine keeps stalling.
is the controller looking for a shift signal ect but not getting it ?
this is the engine in question
http://www.partsworldperformance.com...ngine-19301360
The problem is the ECM is programmed as a manual so its not looking for a auto transmission. Since the ECM doesnt see the trans or no your changing gears its no adjusting the idle like it would in a factory auto. You have to adjust at a minimum the idle, idle airflow, and timing tables to get it to work.
If you try to tell it there is an auto it will look for a TCM and open a whole new can of worms.
If it works cold and not when at temp I would look at your idle and idle airflow tables and add some air in at operating temp. As the engine is getting warmer the ecm adds less idle air.
If it works cold and not when at temp I would look at your idle and idle airflow tables and add some air in at operating temp. As the engine is getting warmer the ecm adds less idle air.
