GMHighTechPerformance Homepage

0301HTP MAGNUM14zoom

One of the pull-down tables we used early on was the idle air control (IAC) throttle follower. This allowed us to set the IAC threshold high enough to keep the engine from stalling when the throttle shuts suddenly. At lower load conditions, the IAC is progressively closed to achieve idle sooner. Later, we discovered the engine would stall when the A/C was on and the throttle was suddenly closed. We then accessed another pull-down menu and programmed 10 more IAC counts to kick in whenever the A/C clutch was engaged. This eliminated the stall with just a few keystrokes.
ACCEL Gen 7 System - Magnum Returns

 One of the pull-down tables we used early on was the idle air control (IAC) throttle follower. This allowed us to set the IAC threshold high enough to keep the engine from stalling when the throttle shuts suddenly. At lower load conditions, the IAC is progressively closed to achieve idle sooner. Later, we discovered the engine would stall when the A/C was on and the throttle was suddenly closed. We then accessed another pull-down menu and programmed 10 more IAC counts to kick in whenever the A/C clutch was engaged. This eliminated the stall with just a few keystrokes.  View Related Article

 

 

Get Adobe Flash player

Car Research Guide