88 camaro 2.8 overheating probs

[bugfoot]

My 88 camaro is air conditioned and every thing works fine for about 30 mins and then I notice the air is blowing warmer and the water temp is rising. I have replaced radiator fan switch and coolant temp switch as well as the radiator fan relay with the same results. I have recently wired the fan motor direct with a switch for manual on and off and have had no problems with overheating but would like to fix it right. This camaro has a 87 build date but 88 on the registration. I don't have much experence with 2.8's mostly V8s. Also the car sat for a couple of years before I got it. Any help would be greatly apprecited, Jerry

[chris2000s10]

does the fan work properly? come on when the a/c is on when the car is cold? leave the ac off and see if it comes on at about 200 degrees if it does a cooling system flush will probably help you out.. the radiator could be a little plugged

[MagicRat]

Consider replacing the thermostat with a 180 degree unit.

[89IROC&RS]

check for blockages in between the radiator and condencer, leaves, plastic bags, ect. check for fan operation, coolant level, and such.

[hellraiser319]

flush the whole coolant system and make sure the thermostat is operating correctly. worst case scenario is a head gasket is startin to go. that happened on my moms firebird's 3rd engine. just make sure fans, thermostat, and fluid level and try flushin it a few times. should help ya out

[bugfoot]

Thanks, Guys !!!!
I have read and done most all the suguestions except the rad flush. I will do that on Sunday. thanks again for all the help Jerry