I was driving today and noticed that the engine temp was fluctuating a little past half way. I checked my radiator reserve yesterday and it was at the min mark so I filled it back up to the max mark. I was wondering if there could be a leak or something as it just started this today. Or could it be the outside temperature contributing to the engine temp raising? It is a 98 civic

 

I'm having a similar problem with my 94 d15b..even when the fan is running, the temp guage floats around...no radiator leaks, nothing really wrong with engine, guage problem maybe? A cooling system flush did nothing to alieviate the problem

 

i also have no visible leaks. and just yesterday everything was just fine. I drove a little today and it would stay at the usual point for a minute, and then after a few minutes of driving it would start raising while driving at slower speeds and would return to normal upon going faster? does anyone have any idea what might be the problem. from what i know it sounds like a non-working fan maybe.....

 

my fan works...most of the time...if the engine has been running for a while, the fan will be on, but the gauge will still get warm...

Is the fan over the a/c condenser supposed to run to cool the engine as well? My a/c is not currently hooked up, if that makes a difference...

seems kind of odd that the fan that runs to cool the engine would only blow on the tranny...