Short and sweet.......

AC on..... car fine.... 200+-.... range ok
AC off .....car really heat up at idle.... bad 240 range..... no ok.....or is it????

what happening......ugh....
Me thought other way around.....did me no get learnded right.....

Has this ever occured to anyone. it is absolutly buggin the crap out of me...
Is this normal for my car to run so hot.....3/4 range....just a hair bellow the red indicator.......

97 Camaro SS

Regards

Don Hog

 

First remember that the gages in the dash are not the most accurate. Second, the fans will not come on (AC off) until the temp gets around 230F. Unless the AC is on and then the primary fan will run even when the temperature is much lower than 230F.

What you need to do is see what the temperature is being reported by the PCM and at the same time measure the actual temperature to see if they correlate. Remember the PCM uses a different sensor than the gage does and turns on the fans accordingly.

Also it never hurts to clean the radiator from time to time. And pull off the top plate above the radiator and be sure you don't have debris in front of the radiator. I had a plastic shopping bag in mine once.

 

the AC tiggers the fans, this wil help to stabilze the temps. What you need to find is that if the correct fan operation based on coolant temp is right. Stock on temps are 227 and 235. See if it's working as such.

 

Look into gettinga 160* Thermostat and Manual Fan Switch.

That is what keeps my Z28 cool while sitting in traffic in the middle of Florida Summer.

 

You could always pull out the radiator and condensor and flush them out, as well as spray water from the back to the front to get dirt out of the fins. You will have to recharge the AC though.