Originally Posted by
blindsquirrel
It doesn't use trans temp for any of the fan tables, only ECT & AC high-side pressure, and those are independent - it uses the higher of the two at whatever point in time. So, if there's no AC sensor input, it only uses the ECT like normal. Nothing else is affected.
Please don't mess with discrete fans especially if one of your priorities is current draw. An infinitely variable speed fan can run at just 8-10 amps if that's all that is needed, a on-off fan is all or nothing (or, the stock SSR/GTO setup with 2 fans in series for low and both fans in parallel for high only gives you 0%/50%/100%, and 50% is way more than 10A).
The SPAL brushless fans are just amazing. Soft-start, no dimming lights, no melted wires or relay sockets.
For some reason I haven't been able to figure out, an E40 can't use the same settings for the SPAL fan as the E38/E92 in the CTS-V/Camaro. Use PWM Electric/128hz and it works like a charm. I can get you part numbers for the special Yazaki connector and related bits if you need that.