surging idle when electric water pump comes on

[racerron]

2017-03-22_17_modified.msl

having some surging when idling. i have the fan control on the ms controlling the water pump. before the wp comes on there is a small surge and wp comes on it gets so bad the engine stalls out. on the data log look at record 750 to 850.

[racerron]

tune file

new8.msq

[slow_hemi6]

Watch PWM idle duty on the log. All it does is pull idle duty to counter act the upside of the surges. In 2 surges it has pulled 60%dc to 0%dc.

[racerron]

new9.msq

i guy named jamie staltari helped me on the maga squirt facebook page. here is the new msq. the surge is gone. still got to make some fine adjustments to the dead time voltage.