Why does my 1995 honda accord keep over heating while its idle or when the ac is on?
change your timing belt and water pump, problem solved!
make sure that when your A/C is on that BOTH FANS are on, my 90 Accord F22A4 had both fans working when I used A/C so I assume that's the way it goes, my JDM H22A uses only one fan, and I think that it is supposed to use two. If so, I myself have a problem. IAC valve is NOT the problem! This tells computer how much air is needed when car is idle.
Why does my 1995 honda accord keep over heating while its idle or when the ac is on?
I have this exact same problem with my 95 accord. Did changing just the water pump fix this problem? I have a limited budget and I know changing the timing belt is rather pricy. Did you change both? Did it work?
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yes! CHANGED BOTH AT THE SAME TIME!!!!
NEVER NEVER NEVER change just one! When you change your timing belt, ALWAYS ALWAYS change your timing belt and WP TOGETHER!
You can get it done under 400. I did, and got a 1 year guarantee on it too!
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It sounds like the radiator FAN, fans relay, fan fuse or something related to the fan.
It is suppose to keep the car cooled during idling.
Good Luck...
try the idle control valve or even the the coolant tank. See if there is a blockage within the tank.
Usually the car can dissipate more heat when it's moving, since air will rush through the radiator. However, at increased speeds, you have increased RPM, which means more heat, so it's a trade-off... Your car might not overheat while you drive it because the air rushing through the front end of the car is dissipating more heat than the engine is making.
But at stand-still the radiator fan should kick on to help dissipate heat. I'd first check that 1) your radiator fan is running when the car is not moving. There are two fans that I speak of, one is behind the radiator, mounted to the engine. The engine itself turns this one. The other is in front of the radiator, and is usually electric. If it isn't running, then there is reduced air moving through the radiator grille to get rid of the heat. If it isn't running, it could be a blown fuse, or it could be the fan has died.
2) While the car is off, and cold, open the radiator, and make sure that you have fluid in there, set to the correct level. You should have a mix of 50% water and 50% anti freeze. Antifreeze breaks down over time, so you should do a coolant flush every 2 years.
3) It could be a stuck thermostat. If the thermostat is old, or original to the car, you might think about replacing it. It basically closes at low temperatures to help uniformly heat the engine block, but at higher temperatures should open to dissipate the heat in the coolant fluid to the radiator. If you get a replacement thermostat, make sure you get one set for the correct temperature, as they can vary with aftermarket parts.
4) Also, you might have air in your coolant lines. If you have recently done a coolant flush, it's important to massage the rubber hoses to get any air out of the system. This allows the water pump to effectively move the coolant through the system. If you have a lot of air bubbles, then coolant wont flow very well.
5) As for the A/C - that removes heat from the cabin, but transfers the heat to the engine bay, since it's one more motor that has to run. Turning it on will put more strain on your engine, reduce fuel efficiency, and increase temperature in the engine bay slightly.
is your coolant level full? if so then do all your fans work? i would bet that the condensor fan is out or possibly both fans not working if it only overheats when idling. start there.
sounds like the fans are not working. do you hear them kick on at all?
