Mercury 175 Xr Wiring

[henfarm]

There are two wires coming out of the manifolds( I believe they are thermostat related). The positive, runs past the starter and is not connected to anything. I cannot find another wire to plug it into, and I dont remember it laying around loose. The engine was sending an overheat alarm, we had it serviced, and now it has the loose wire. Any help is greatly appreciated.

 

[hondon]

Re: Mercury 175 Xr Wiring

You've left us a little lacking of info ,but I'll give it a stab. You have only one mani on this engine so I'm guessing you are refering to the cyl. heads. What color are the wires that you see dangling?

 

[henfarm]

Re: Mercury 175 Xr Wiring

Sorry for the lak of information, but this is a V6 with two manifolds. The wires are brown, but the positive brown wire is the one unplugged. I is possible that this wire has never been plugged in, but I don't remember it. Thanks for your help. I ran it today and water did flow through the manifolds. If this thermostat wire is supposed to plug into something than I could get screwed if the alarm doesn't go off and I mess up the engine. Thanks.

 

[henfarm]

Re: Mercury 175 Xr Wiring

The wire is just for diagnostics I believe. when at idle the pump doesn't flow water throught the engine. This is frustrating because you can't stay in idle fro more than a minute or two. Is their any way to get this thing so I will not overheat while in idle. it runs like a champ in anything but idle. Thanks.