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I’m struggling with a PWM fan issue on my S54-swapped E30. The fan triggers at 100% immediately upon cold start, regardless of engine temperature.
I believe the DME is entering fail-safe mode because it’s missing the CANbus data from the original AC system/chassis. I want to delete this fail-safe logic so the fan follows the radiator outlet temperature sensor map instead of defaulting to full speed.
Can I resolve this using NCS Expert, or do I need to flash the DME using WinOLS/TunerPro?
I’ve been stuck on this for days and would really appreciate any help from someone who has dealt with this swap issue before. Thanks!
I make it work this afternoon, i will post a reply when i know what exactly i dis, i have tuned so many things on tunerpro, Thanks