|
could the radiators have something blocking the air flow? You could have something within the water passages within the engine blocking water flow, so maybe you could try a collant system flush.
I know this is an extreme stretch, but the compressor could be malfunctioning. if the compressor isn't operating at full effeciency, it may be causing more friction and doing less work. This could remotely cause the engine to get hotter and work harder than normal and get hotter....yet if it got hotter, the colling system would naturally coll the engine back down...so.... I would think it is your cooling system, not the A/C's fault, no matter how it reacts only when the A/C is on. The only possibility is as I stated before, there is a certain blockage of water flow, but this blockage doesn't effect the cooling of the engine itself, only when there is extra load on the engine does the extra cooling that is needed bieng blocked, and thus only overheats when the A/C(extra load) is on......well, like I said, it's a stretch, but possible....
simply...have your system flushed, not just drained, but flushed at a radiator shop(or if you know how to do it; I believe you need a pressure or steam washer). Good luck.
|