Yup, it sounded like a knackered fan to me too, however I wired it up directly to the battery and it ran faultlessly.
My biggest query is the voltage at the connector. It's reading a permanent 16v feed regardless of if the engine is hot or cold. I ran it with the temperature sensor unplugged which will normally failsafe the fan to run but voltage did not change. I did this both at operating temperature and when cold. So I'm a bit confused.
Should there be a permanent feed to the fan? Surely there should be 0v across it when the fan is not needed?
The fan ran fine at my last track day in November, the only changes since then are a 4-2-1 de-cat manifold with the 2nd lambda housed in an pure argon shield to keep the Cat Efficiency protocol happy in the ECU.
The only other difference is that the primary Lambda sensor is only reading 2 primarys and not 4 but surely this shoudln't effect the unplugged temp sensor test?
My biggest query is the voltage at the connector. It's reading a permanent 16v feed regardless of if the engine is hot or cold. I ran it with the temperature sensor unplugged which will normally failsafe the fan to run but voltage did not change. I did this both at operating temperature and when cold. So I'm a bit confused.
Should there be a permanent feed to the fan? Surely there should be 0v across it when the fan is not needed?
The fan ran fine at my last track day in November, the only changes since then are a 4-2-1 de-cat manifold with the 2nd lambda housed in an pure argon shield to keep the Cat Efficiency protocol happy in the ECU.
The only other difference is that the primary Lambda sensor is only reading 2 primarys and not 4 but surely this shoudln't effect the unplugged temp sensor test?
