Yep mine did the same thing. And yes, too cold is a problem as well.Pilch said:the old unit was a 180 farenheit. And it was stable.....although months ago it ran 2 bars above cold on the guage, and lately only bar above the cold.
Measured temp before and after by submerging a thermometer into the water. This was after a 10min cruise and than 30secs of stationery revving in 35* heat.
I noticed it warms up a little quicker with the DAYCO too, so maybe there was some water escaping through and allowing extra flow = lower temp???
I'm not worried about overheating, just like to know why it has happened.
Mine would take quite a while to get hot, crusing at 100kph would have my temp 1 bar off cold which is just too cold.My problems happened at the drag days and also the easternats. As soon as the temp got to 1/2, no amount of thermofans+electric waterpump could get it back down. I don't have that problem with the proper clevo thermostat. Even though it gets up to 1/2 quickly (1/2 is where Ford intended it to be by the way) it hasn't passed 3/4 even stuck in traffic on a 36 degree day and only goes up to 3/4 for a second then returns to 1/2.
The 190 degree in the XE used to go to about 7/8ths of the guage before it opened... so 3/4 guage would seen to be correct for a 180, so until it passes 3/4 for at least a minute I don't panic anymore.