My engine stalls and dies at idle and coming to a stop.When I come to a stop or slow below 20mph the revs drop and surge between 600 and 1000rpm then the engine dies.It does this intermittenly.Any ideas?My normal idle is set at 750 to 800rpm,the truck has a 90mm cable operated throttlebody.

 

Mine (intermittently) also with Cam swap. LQ9 6.0 with TorquerV2 cam

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same here...been chasing this problem for a while.

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You guys need to use the search, or just look back a few threads.
Anyway its likely to be your running airflow. Also if it dies coming to a stop look at cracker settings, maybe add some air. You might want to decrease follower decay rates too.
Take a look at these tables, the values in them, your logs etc. Timing at idle in the base table might help too.