Erratic Engine Temp Indications

Here's the story. I have a 2004 VFR with 23000 miles. When I'm riding I'll get erratic engine temp indications. Meaning the temp jumps all over the place. Example would be the temp gauge going from 155, 112, 148, 130, 175, 159 all within the span of a few seconds. The fan still kicks on and off in traffic when I would expect it to (warm day while sitting at a traffic light) but the temp will read something stupid like 165. I noticed it this summer but didn't have anytime to ride so the bike sat and I just recently replace the Thermostat and still have the problem. Any ideas?
:cheersaf:

 

Check the connection at the sending unit to start with.

 

WOW what quick service around here! And where would one find the sending unit?

 

Right here Comicus. It's bolted to the front cylinder head,which is a good location since it's conveniently buried beneath the throttle bodies. :frusty:

 

Deep down I knew that's where it would be located... I was just hoping it wasn't. I really didn't want to have to tear down the bike again.:censored:

Thanks for the replies

 

Ouccccchhhhhhhh..

Another honda engineering miracle LOL.

I shouldn't complain as my bike starts every time.

 

Been there done that once on my RC51 Reg. I swear I wanted to punch myself in the face when I saw the coolant leak. :doh:

 

Why i love the simplicity of gen 2s: i could reach that connection in less than one minute and could change the thermostat in 5.

 

I was wondering how long it would take you to chime in on the placement of the thermostat and sensor on the newer bikes. 13h41mins...I was expecting a better time out of you!
:lol:

 

Got to get the car engineers out of the motorcycle dept.

 

So I finally got around to replacing the sensor and the damn gauge is still all over the place. The connection, ground, and wires looked fine. I'm out of ideas...

 

Hell my Gen 1 can be done in half that time. otstir:

Only one thing left is the gauge or a resistor inline with it in the panel or in the gauge itself, may be.