160 stat

[01tao6gto]

i have a 06 gto and i installed a 160 stat i drove it over the summer and it was fine, i got it out today when it is cold and the tempature was inconsistant up and down it was 160 at idle and when i got on the highway it got to cold. ANY IDEAS!

[Sarge]

Couple of things....a lower temp thermostat only opens at a lower temp....the motor still reaches operating temps and stays there.....in other words.....my 160f stat opens at 160f....my motor still reaches operating temps of 185-212f ( depending on the weather/city driving/AC on or off etc.)...same thing with the 180f......I would check for a few things here.....
1. What temps are your fans coming on and going off?
2. Do you have a air bubble in your coolant system? Burp it.
3. Is your temp guage have a short or a faulty sending unit?

[gagoat]

forcing air though the cooling system will bring the temps down