Won't come up on plane

[Basser2be]

I have a 2004 225 vmax 3.1L efi
When I went out the other day the motor would Idle fine but wouldn't get up on plane. I had this issue with a mercury once and it was the primer bulb but thats not the problem here. I pulled the cowling to start checking on fuel lines, filters etc. I noticed a red wire with a female connector hanging out of the rear of the motor it looks to a thremo sensor. I found a green wire with the matching male connector laying in the bottom of the housing. My question is two fold do these wire go together and if this is a thremo sensor with it not connected could be giving a false reading and keep the motor from coming up on plane. I was going to post pictures but I don't know how to do that from my phone.

[Basser2be]

Update on my own post. IT is the knock sensor, question remains if it not connected will it keep the motor from coming up on plane?

[Basser2be]

Update, the knick sensor being disconnected was my issue

[99R93S]

Thanks for the updates. May help someone out greatly at some point