so lately my coolant temps have been around 145-165 F. only when i sit for a while do they go up to 180. i was wondering why this could be happening. btw, its not insanely cold here. it fluctuates between 50 and 80 F here. i was wondering if ill need a new thermostat??

 

my coolant temps have been around 150, its because its getting colder outside so ur car is sucking in a lower intake temp allowing ur engine to run cooler

 

time for a thermostat....both of you.

 

any other comments??

 

You need a Thermostat. When I run my heat my temp sits between 195-198, without heat still cold outside though it stays 188-190.

 

I think operating temp on this car is 185-195ish? so thermostat for sure

 

**** me. I have the same problem.. While driving my coolant temps are roughly 163-171°F.. But it only started happening now that it has gotten cold, and by cold I mean 30°F.. My heat still blows like a New York hooker so I'm not sure.

 

lmaorotf

 

New thermostat is in order, same thing happend to my budies 2.0t saab (a cousin to our cars) and once we put in a new thermostat it was fixed.

 

Mine sits at 190 all the time

 

i think it might be time for me too lol. i got a check engine light the other day for "coolant temp low". used to run around 200 but now its sits about 175-185

 

183 is normal running for mine

 

Yeah sounds like you guys could all use new ones. dealer should take care of it if it's under warranty. I had mine replaced last year when it stopped reading completely, it was stuck open.

 

179 is average for me. Usually only go into the 200's at the track.

 

thanks for the feedback you guys. im gonna get underneath it and see if i can get my hands on this puppy. but i hear its pretty difficult. ah well, might as well try. i have to change my oil, plugs and front o2 anyways. might as well try it.

what kind of price would i be looking at if i had the dealer replace my thermostat??

 

I have not dont one on a SC ecotec but it takes between 5-10 minutes from the top side on a 2.2-2.4.

 

yea, its a t-stat. my 2.4 was running at about 160 constantly. puit a new one in and its back to 188-196. Stck t-stat is 180* ona 2.4

 

I just replaced my thermostat, I was seeing coolant temps as low as 120 on the highway before doing so. After replacing, I've been seeing around 175 with constant fluctuation. It will usually register 172-176 dependent on driving conditions. The temperature will hang at 172 for a few seconds, then go up to 174, then 176, then back down to 172, pretty much constantly. If you accelerate away from a light, it will drop to 169ish, go back up then fluctuate, thoughts?

 

^ about where mine sits, heats up to 180+ if i sid idle a few mins but 175 or so cruising