well in the summer i changed my thermostat with an oem one. Worked mostly fine all summer. Had no issues at the track. Now that its much cooler outside, sometimes at full throttle my temp gauge drops a tiny bit. Especially if i turn the heat on.

Ive read old threads about thermostats but i havent got anything from them. Is there something else i should look for??

thanks

 

It's normal... doesn't happen with me, but it's all common sense.

 

Its normal, more faster air moving through the radiator = cooler car

try running a bigger radiator, the temp gauge drops down to full cold during the winter when you're on full throttle

 

if its normal how come it never did this when i first bought the car?? when the heats on the temp drops down 1 full line on the gauge...this cant be good for my motor

 

Because you changed the thermostat, maybe it just reads a little differently for some reason, and your temp dropping 1 bar isn't going to harm your motor man...

 

Make sure you don't have an electrical problem.
Maybe at full throttle the engine moves enough to pull on the wires and cause the gauge to fluctuate.
I've had that same issue on my car.

 

It's funny how a bad motor mount or two could be the culprit of this.

 

ill check for this tomorrow although i think the mounts are fine

 

same problem here, fine in summer and now.
if i am on hwy, temperature drop to like around full cold(C). this is after i replace my rad(not aluminum one). final check is the thermostat problem