My car doesn't overheat when the ac is not on. Even on an hour of driving in the middle of a hot day, but once i run the ac for about half an hour the temp will slowly increase.
First time it happened, i quickly checked for any coolant leak. Only to found out the reservoir was empty. Hoping that's the only problem so i filled it up. Then the next day the same thing happened, once i run the ac. Temp goes up and empty reservoir.

The parts that i replaced within a year are radiator, hoses, cap, thermostat, water pump and headgasket. Any ideas?

TIA

 

Also once i turned off the ac the temp goes back to normal.

 

I've had this same problem for years, I don't know what cause it or how to solve it.

Anyone???

 

Mine did that once. After awhile it seemed to do without the AC. It turned out to be a head stud loosened.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Muckman &raquo;</TD></TR><TR><TD CLASS="quote">Mine did that once. After awhile it seemed to do without the AC. It turned out to be a head stud loosened.</TD></TR></TABLE>

i properly torqued my arp headstuds and i don't see why it would only overheat with the ac on. hope that's not the case.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bradboy &raquo;</TD></TR><TR><TD CLASS="quote">I've had this same problem for years, I don't know what cause it or how to solve it.

Anyone???</TD></TR></TABLE>

How many years exactly? I'm only been boosting for a few months.

 

is ac condensor fan working?

 

same issue happened to me too

but mine does something even weirder.
I get a huge load on my motor when the a/c is on
vacuum is like 15 inches/Hg and car vibrates like mad.
p28 ecu on an obd2 motor... i wonder if that has anything to do with it...