- Joined
- Aug 1, 2003
- Messages
- 9,721
dont worrry about the iac PD ,, be concerned about the iAC target
iac is too high ..your tps base should be moved up to 10-13 and check that under idle parameters that the min tps for idle is greater than the tps at idle
the throttle follower wont allow iac to go below the line based on tps ... scale down the throttle follower so that at tps base it will allow the iac to go to atleat 10 , and then youll see the true iac target and you may need to adjust the throttle blade screw and reset the tps accordingly , just as you would do on a chip
as to your actual af being 0.0 is confusing because you posted your idle af is 13.1 " A/F stays at 13.1 at idle (1,100 rpms) ".. looks like you have a mismatched wideband sensor for a box that doesnt have the any o2 option file or a dead sensor , without the any opt file the sensor needs to be numbered from fast and match the serial # on the box , with the any o2 file you can run any l1h1 sensor
with the sensor not reading you can forget about the airfuel table because your ecu wont track that wont run closed loop (no correction ) and will only run fueling based on whats programmed into the ve table +/- any correction based on tps , map, coolant, afterstart etc as if it was a programmable chip but without an actual wideband you cant tune the ve
iac is too high ..your tps base should be moved up to 10-13 and check that under idle parameters that the min tps for idle is greater than the tps at idle
the throttle follower wont allow iac to go below the line based on tps ... scale down the throttle follower so that at tps base it will allow the iac to go to atleat 10 , and then youll see the true iac target and you may need to adjust the throttle blade screw and reset the tps accordingly , just as you would do on a chip
as to your actual af being 0.0 is confusing because you posted your idle af is 13.1 " A/F stays at 13.1 at idle (1,100 rpms) ".. looks like you have a mismatched wideband sensor for a box that doesnt have the any o2 option file or a dead sensor , without the any opt file the sensor needs to be numbered from fast and match the serial # on the box , with the any o2 file you can run any l1h1 sensor
with the sensor not reading you can forget about the airfuel table because your ecu wont track that wont run closed loop (no correction ) and will only run fueling based on whats programmed into the ve table +/- any correction based on tps , map, coolant, afterstart etc as if it was a programmable chip but without an actual wideband you cant tune the ve
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