Welcome oldnewbie - thanks for coming in!
Quote:
Originally Posted by oldnewbie
The Spal fan on my 2004 SIII quit working. I checked the fuse and have measured 13 VDC at the fan plug after the engine reached 213 degrees so I know the ECM is telling the fan to run. ....
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Are you measuring across the pins in the plug from the brown/pink to the black/yellow - or just measuring the 12V at the brown/pink with respect to ground?
The fan
always has battery volts on the positive terminal (switched by ignition) - it is the return (ground) side that is supplied by the ECM.
Take a wire and short from the black/yellow to ground - if the fan runs, you have another problem. If it doesn't, confirms the fan is bad.
See this thread - similar problem