Taurus fan kills idle, How to tune?

[DaleMX]

I have the fan wired as a single fan. When the fan comes on at idle it really stumbles badly under the load, almost killing the engine. The Cam is a TR230 and I have custom shorty headers. Any Ideas?

Thanks

[Dirk Diggler]

Have you tried adjusting B4301 and B4302

[DaleMX]

Thanks, I had increased it to .3 but it didnt help, so I increased it to 1.5 and that helped, but the idle is in need of some work, especially when hot, like leaving the grocery store, cough stutter spit zoom.