Yesterday my coolant temps kept going above 200 and my Iats were almost always over 130.. I checked ic pump and its working.. Every now and then they would drop to 70 but as soon as I done a lil pull back up to 155.. Any suggestions on the problem??

 

First off in cooler temps your using Ure climate control. msinly heat. And beleive it or not you ll get higher ects to help with heat. Don't beleive me drive without best snnd drive with heat also I say either you have air bubbles or your ic pump is ******* up again.. next time just text me.

 

And another suggestion quit being a rare and log the **** and send.me a log. cuz you still need some tuning .. last log u sent you had kr on top end from Ur best and or gas .. so send a log.

 

James is always killin' it!

 

Lol the car didnt feel like it was pulling any timing was the weird thing and James I started my new job so havent had much time lately

 

Well u need to **** Ure job.. hahah jk. But your car won't pull timing till 155-160* collant temp unless you hit kr. Which is very possible. Since your not tuned 100% ..

 

You see coolant flowing for the intercooler?

Maybe time to flush the IC system?

 

Yea I can go on hptuners scanner and hit on for ic pump and you can hear it come on and coolant flow through h/e

 

dont forget the fundamentals. if engine temp itself is spiking could be thermostat failure, check for coolant flow. without a phenolic spacer if the engines getting too hot the LIM itself will be way too hot as well.

 

more then likely a thermostat problem 15 min fix on the worst side hg

running the heater wont make the engine temps get hotter

yes dont forget fundamentals

thermostat is what i would suspect also but worse case is a hg

i wouldent say iat2s are getting to hot but they will be higher when the engine temps rise

 

Just replaced thermostat and coolant temp has been find today.. its 40 outside and 10 mins of driving my iat2s were around 150 just regular driving too

 

system has to be clogged or air bound, even a bone stock sc runs cooler than that. Do you have a infrared thermometer? hit the lim near the head and see what its at, could be a faulty reading from the tmap.

 

no I dont have that thermomter.. Im bout to bleed system and hopefully thats the prob

 

Lmfao... Honestly it does...... Prove me wrong please........... Please..... Every single Eco I have worked on lnf mainly get warmer with the heater on. And some lsjs. Lulz..

 

if you are driving down the road and just turn the heat on it is impossable for the engine temp to rise
if you turn on the defrost/ac on it is possably for the engine to run a couple of degrees warmer as the load has increased on the engine if the temp rises to high that is a sign of the ac compressor is starting to go bad but engine temp will not rise with just the heater running

 

So what your saying is if you add a secondary after cooler to your s/c set up your iats will increase? Your heater core acts like another radiator, unless the coolant flowing through heater core is disrupting the coolant flow at the temp sensor your coolant temp should and will be cooler with the heat on, at least it was in my 99 silverado. How many miles on the engine? A water pump on the way out will also cause coolant temps to run high.....

 

Running with the a/c or defrost shouldn't raise the coolant temp either as the cooling fans are running, unless you do mostly stop and go driving which puts more load on the engine and does create more heat. Not trying to start any thing just going off what my past experiences with my own vehicles and 4-5 yrs experience in a dealership have taught me, I am in no way an expert on this platform so I could be completely wrong.

 

Coolant temps are normal now.. just have high iat2s... They were a lil lower yesterday but still 115+ really quick

 

My turbo'd LE5 runs hotter coolant temps with the heater on.
This is the only car I have had that gets hotter ECT's with heater on.

So in this case, Yes, James is correct !

 

My cars coolant temp never rises with the heater on.

 

then you have something wrong with your car

 

thats why i said possabky could

 

As stated prove me wrong.... I know how a heat exchanger works im not a *******. So dont talk to me like one or id be glad to talk to you all being a smart Ass...yes running the blower motor on the heatercore does cool ect a Lil. But im being serious when I say.


In most cobalts I've seen, worked with, dealt with, there ects actually go up a Lil with heat on...

Prove me wrong...... In a cobalt. Not another car!

 

Please take the arguments to PM.

Everyone please get back on track to help the OP out. Thanks.

 

James (CCSS3) has been textin me.. Thanks for the help everybody that actually helped