Re: 146 ti heating problem
45 degrees is definatly too low :O
However, depending on how old your TI is, the temp on the gauge might not be what the ECU is reading. On mine (built in 98) there are two temp sensors. One screws into the side of the block and is purely for the gauge. The other screws into the stat and is for the ECU. The gauge sensor is definatly not accurate on mine. It usually reads around 70. However, a themometer in the coolent tank shows the temp to be about 75 - 80. Obviously add at least another 10C here as the coolent here will have had chance to cool from the engine via the rad. Ideal temp is about 80 - 90 I believe.
Newer models (Sorry, I don't know exactly when) have one sensor for the temp which feeds both the gauge and the ECU.
A flat spot between 2000 - 3000 is quite common. There are many threads about this problem! Infact my car suffers the same most of the time. AFM, variator, themostat, temp sensor etc etc are all likely culprits.