only when the ac is on the car over heats. i have flushed it new oem therm and rad cap. i don't get it, and the car is clean. no debre......anyone help please

 

new water pump too

 

Make sure the fans are coming on when the AC is on. Also, you could have a blockage in the radiator even if you ran "flush" through it.

 

Check fan operation. If the A/C cooling fan is not working; look at the relay; or a unplugged motor.

 

Abit off topic here, but I just pick up a 99 CL 3.0 and have no AC, fans do come on, so I am thinking low freon or maybe something else. Do you know where I can get a diagram of the sensors and electrical wiring that shows the AC connections. I have no manual. In front of the radiator I have a plug with a green tip thats not connected, no sure what that is to be plug into and to the left of that there is another plug not connected. I am thinking they have to do with the AC not working but not sure where to plug them in. Any help will be greatly appreciated.

 

you should have a/c, if you dont some body removed it. all 3.0's are auto (why honda) and as for the plugs, lol, it depends, front of the rad you say, do your horns work? if so are they factory? there is a air bag sensor down there to.

 

Low Freon is a good guess for me,based on the age of the car the freon may leak thru an O-ring slowly. try going to your nearest auto parts and purchasing a can of it with a hose. Attach the hose with the Can of freon to the line with the blue "L" cap on it(low pressure) hose. Turn your car on,and crank the A/C to the coldest and highest fan setting. Ideally the freon should start to be sucked in from the can, you'll hear the CLICK of the A/C clutch turn on, and your air should be become colder.