The fan should come on to cool engine but it only comes on when the ac is on. It used to come on when I parked and turned it off. It is no longer doing that and the engine is getting hot. WHAT IS NOT WORKING?
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Re: 92 accord radiator fan not working
The sending unit has went bad. it comes on with the ac because it designed to overide the high temp sending unit or switch. should cause less then 50 bucks to get it replaced and only a few bucks if you do it yourself
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if engine at long stand still,the engine temperature will rise about 190 degrees the cooling fan suppose to automaticaly turn on when coolant temperature sensor get hot it cause its resistance decrease causing pcm to send power to coolant fan relays and cooling fans, when you turn on AC the cooling fans suppose to turn on to cool down AC CONDENSOR, IF NOT AC WONT WORK COOLING FAN COOLS DOWN REFRIGERANT SO IT CAN RECYCLE THROUGH THE SYSTEM AGAIN.your cooling is suppose to turn on when engine at a sit still if vechicle not moving as coolant temperature rises at a set point the cooling fans will turn on cool down engine.cooling fans dont turn on when you first cold stsrt vechicle unless you have AC SWITCH ON.if cooling fans dont turn on when vechicle at a long stand still or moving along slow traffic.if coolant temperature sensor been replaced and fuses and relays okay have dealership check see if pcm driver circuit working faulty pcm will cause cooling fans not to turn on.
CHECK TO SEE IF COOLING FAN IS RUNNING.IF NO CHECK COOLING FAN FUSE AND RELAY.THE COOLING FAN NEED TO BE RUNNING WHEN AC ON BECAUSE AIR CONDITIONER PUT A LOAD ON ENGINE.COOLING FAN KEEP RADIATOR AND AC CONDENSOR COOL.FAN NEED TO RUNNING.
About the only thing that you didn't list is the cooling fan. Are you sure that it's working properly? Drive the car until the engine starts to get hot. After awhile you should hear the cooling fan come on. After you have driven the car for a while, park it and open up the hood. If the upper radiator hose is almost too hot to touch, then check to see if the coolant fan is running. If it isn't, then turn the AC switch to "AC MAX". If the fan still doesn't come on, then a malfunction is indicated. Try to locate the fan control relay and swap it with another relay that has the same part number. Use a relay that will allow the engine to run. Allow the engine to reach operating temperature and see if the fan comes on after switching the AC switch to "AC MAX". If the fan now operates, then replace the relay. I hope this is helpful to you. Thank you for trying Fixya.com. If this does not solve your problem, then post a comment and I will respond by getting into more advanced diagnostics.
The AC cooling fan (in some cars) is tied to the operation of the AC only. Others are used as auxiliaries even when the AC isn't in use.
Your normal fan is likely controlled by a thermal switch located in the bottom tank of the radiator and these are not uncommon failures, not terribly expensive or difficult to replace.
It may be sloppy, but it is safe to leave the battery connected but the key removed when doing this; there won't be power to the connector if the engine is cool.
Check the lower radiator tank for a largish hex-headed sensor with one or two wires coming from it. It (or they) will be plugged into a mating connector.
With a container to trap lost coolant (it can poison animals) and a tight cooling system, these switches can be removed and quickly replaced with little coolant escaping.
Use Teflon tape on the threads of the new switch and do not over-tighten the switch when installing.
Ok this one is kind of hard to diagnose but maybe I can give you some answers. The 2 problems you have work hand in hand. If you have low oil level the heat in your cylinder walls raises because there is not enough oil to lubricate the fiction caused by the pistons going up and down. Secondly if your car overheats it gets so hot that the oil gets really thin thus viscosity break down occurs. Your Honda has an electric fan on the radiator and if this fan is not working your car will overheat. Crank your car with the hood up and let it idle till the temperature gauge comes up and the electric fan should come on. You will be able to hear and see this happen. If the temperature guage keeps climbing and the fan has not come on then turn your AC on and see if the fan comes on. They are tied together and when the AC is on the cooling fan switch is bypassed and runs all the time. You also have a oil pump in your engine that keeps the oil pressure moving inside the engine. If this is going out it will cause the oil light to come on and make your engine overheat. I am sure you have checked the oil level and the coolant level in your car but if you haven't please do that. I hope this helps you out to find your problem. Oh yea if the coolant fan comes on when the AC is turned on then you have a bad sensor and you need to replace that. In any case I would not drive it until you figure this out because it will for sure cause engine damage. Good luck, Roger
Typical problem of R-134 freon. It just doesn't perform well at idle, though hardware changes over the years have improved performance in later models.
However, be sure to cover the bases. Check freon charge with gauge set. Don't guess. Make sure the pressures are correct and that cooling fan is functional and nothing restricting air flow at condenser & radiator. High pressure from car wash wands can fold-over the cooling fins at radiator thus restricting air flow. I suspect all this is good but you should make certain to remove any doubt.
this is normal. The fans are thermostatic controled. When you park your car and the engine is not running and not circulating water the temp. will come up and the fans will come on and cool the water down. Make sure you check your water level in the radiator and expansion tank. AFTER the car has cooled down.
there are 2 fans 1 for the ac that only comes on when the ac is on thats normal.and the radiator fan that comes on when it reaches 160' to 180'degrees only on electric fans.u might have to reposition the wires on the fan.