hey what up fellas. i have a problem with my 2001 z28. everytime i turn on the AC the engine starts to overheat. does anyone have the same problem? any suggestions?

 

simple... don't use the A/C lol or remove it

 

Blown head gaskets? Have you checked the coolant level?

 

the colant level is fine and i have a 160 stat in there.

 

My money is on the thermostat sticking

easy fix

happens to a lot of people when the thermostat goes south... they turn on their AC and the car starts overheating...

https://ls1tech.com/forums/generation-iii-internal-engine/956321-overheating.html

 

does this happen standing still or cruising? both?
does the needle ever max out on the guage, or slowly creeps?
make sure the fans are coming on as well as pulling the right way....
unless its a 98, the water temp. guage in the cluster isnt accurate...but if the needle is moving past the point where it usually sits, there is an issue...
make sure nothing is obstructing the path of airflow to the radiator...
also make sure there is enough coolant in the system....
if you ask me, its probably your thermostat sticking...after the fans, id start there.

 

we can disregard the thermostat cuz i added a hypertech 160 like a couple of weeks ago.

 

this happens when i am cruising it and it slowy creeps up. both the fans are going on and is blowing towards the engine. oh and mine is a 2001

 

even though it's new, and a 160... i wouldn't necassarilly disreguard it... it could be defective, or gunked up... how's the crappy dexcool stuff doing in your cooling system... gunked up yet? when I did my radiator swap i got rid of that stuff... put in some nice yellow/green Prestone extended performance... MUCH BETTER

 

common sense thinking here....

did it happen BEFORE the hypertech... maybe it's the hypertech itself

 

nah brotha the car did that even before i added the hypertech.

 

you just added a cooling system component to your vehicle and now it is overheating with A/C on in hot weather...
if your stock one was still working when you took it out, id suggest putting it back in...
just because a part is new doesnt mean its good...

you can get away with the 160 thermo when its not so hot outside, but the stock cooling system has a hard time keeping up with a 160 in hot weather.

 

i do have the prestone antifreeze....

 

I believe he's saying it was overheating before he added the T-Stat... and he added it BECAUSE it was overheating... if that's the case, then YES, we can rule out the T-Stat...

 

the car would overheat even before i added the thermostat.

 

yezir!!!!!

 

Good Man!

Did you check your coolant/oil to see if they had mixed with each other?

 

do you have aftermarket heads on your car?

 

last time i open up my radiator cap i found no traces of any oil substance or when i check my oil i dont find any signs of coolant.

 

no heads sir. its stock except for a few bolt ons