My left fan turns on immediately when I boot
I had a left fan that wasn't spinning. I installed Macs Fan Control and it didn't even recognize the fan.
I replaced it with a fan from the 2007 MB Pro, non unibody, which is supposed to be compatible.
The install seemed to go okay. I was very careful with the connector cables.
When I rebooted, the left fan came on immediately after I pressed the power button, and stays on all the time, running at full speed, which Macs Fan Control reports is running at 6600 rpm.
I did a SMC and PRAM reset, but no change.
What should I look for when I open the computer up again?