2007-03-15 05:16:04 · 5 answers · asked by huh_wah 1 in Cars & Transportation ➔ Maintenance & Repairs
Your car overheats because you are putting a higher load on the engine. It is like you trying to cary another person on your back.
Things to check:
Are your fan / serpentine belts tight and in good condition?
When the AC comes on it energizes a clutch and the compressor starts turning if your belts aren't tight enough they will start slipping and the water pump will not pump enough water through the radiator.
Is your radiator full?
If your radaitor isn't full you lose cooling capacity.
Is your radiator clean on the outside through the fins?
Dirt, leaves paper and other roadside debris can block the radiator so no air can get through it. the air passing through the radiator is what causes the heat exchange. With the engine off take a hose and spray water through the fin area of the radiator to wash all of the bugs and dirt out be carefull not to damage the fins.
When was your last tune up.
If your timing is retarded your egine will get hot. This is not as much of a problem anymore with computer controlled engine management.
This should cover most of it.
2007-03-15 05:39:51 · answer #1 · answered by 390ranchero 2 · 0⤊ 0⤋
Your car overheats when you use your AC because you are probably low on antifreeze. When you use your AC, it puts more "strain" on your engine to run the AC compressor. The more your engine works the more heat it builds. If your cooling system isn't full, it can't disapate the extra heat properly.
2007-03-15 05:30:33 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Turning the AC compressor puts a load or strain on the engine. It is also releasing heat to the condenser that sits in front of your radiator. When you are sitting in traffic, during hot weather, air is not moving past your radiator at a quick enough rate or quantity to provide the cooling necessary. Also, at idle your water pump is not turning as fast either. You may want to have your radiator flushed and replace the coolant to increase performance.
2007-03-15 05:28:16 · answer #3 · answered by Fordman 7 · 1⤊ 0⤋
Pop the hood and check if you have 2 fans. One should be larger than the other. My guess is that the smaller Auxilliary fan is busted. This fan turns on simultaneously when you use the A/C. Simply run the engine and turn on the A/C. The smaller fan should be running. If not, it might be busted or the fuse is burned.
2007-03-15 05:40:21 · answer #4 · answered by Tom C 3 · 0⤊ 0⤋
Your ar§e overheats when you use your alternating current!?
That IS strange!
2007-03-15 05:19:19 · answer #5 · answered by w00t 3 · 0⤊ 0⤋