Cooling Fan running

Tiny
LORD FARRINGDON
  • MEMBER
That's good to know gdereck. That would be one of the last things I'd ever check if I had the problem again yet now it will be the first thing I'd check!

Terry.
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Sunday, January 5th, 2020 AT 7:06 PM (Merged)
Tiny
KHLOW2008
  • EXPERT
Cooling system bleeding is something that is often forgotten when overheating or cooling fan issues are encountered.

When removing the radiator cap at cold engine temperature, the level should be at the top of the neck. While bleeding the cooling system, the heater should be turned to maximum to allow any air trapped in the heater coil to be expelled.

When any coolant depletion is discovered while no repairs had been carried out, system should be tested for leaks.
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Sunday, January 5th, 2020 AT 7:06 PM (Merged)
Tiny
HETALRAJIV
  • MEMBER
  • 1997 HONDA ACCORD
  • 4 CYL
  • AUTOMATIC
I am using honda accord coupe 1997 car for the past 12 years.I put up in kuwait and the temperatures here right now are as high as 50 degrees centigrade.I use coolant for the radiator. My query is that the radiator fan remains on even after the car engine goes off for arond 10-15 minutes?Is this normal because im worried that this drains off my car battery.
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Sunday, January 5th, 2020 AT 7:07 PM (Merged)
Tiny
MHPAUTOS
  • MEMBER
This I feel will be normal in extreme temp conditions, you will have a problem if the fans keep running, as they shut down after the coolant temp falls to a lower level, this system sounds ok, you must remember that after the engine has shut off the coolant temp will rise as there is less cooling effect and the engine temp soaks into the coolant raising the temp, the fans running after shut down help drop the coolant temp quickly.
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Sunday, January 5th, 2020 AT 7:07 PM (Merged)
Tiny
KHLOW2008
  • EXPERT
Just ensure the coolant level is correct and it should be ok as explained.
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Sunday, January 5th, 2020 AT 7:07 PM (Merged)
Tiny
TODDLER27
  • MEMBER
  • 1997 HONDA ACCORD
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 15,100 MILES
I have a 1997 Accord Wagon. Runs great, have maintained it well, at least mechanically.

The odd thing happening lately is that AFTER I turn the engine off, a fan comes on under the hood. It doesn't ALWAYS come on, just every now and then. Sometimes it will come on after short drives (to the grocery), but will NOT come on after long drives (say 10-15 miles). And while driving, I never see the temperature gauge start to indicate that the car is running hot.

Any ideas what this sound/fan could mean?
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Sunday, January 5th, 2020 AT 7:07 PM (Merged)
Tiny
2CEXPT
  • MEMBER
Might want to go ahead and replace the engine temperature switch-The fan coming on is normal but maybe the switch is out of calibration and its not reading on the temperaturre gauge.
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Sunday, January 5th, 2020 AT 7:07 PM (Merged)
Tiny
TODDLER27
  • MEMBER
Thanks boss. Will look into that. Makes sense - just seems that timing is off somehow. Not a particularly hot motor, no smoke coming out, etc.
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Sunday, January 5th, 2020 AT 7:07 PM (Merged)
Tiny
TIRESMOKE
  • MEMBER
  • 1997 HONDA ACCORD
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 150,000 MILES
Hello, i recently had my engine washed with some engine cleaner and pressure washed it , i got the engine nice and clean .. i did this round 9 at night ..after i parked it in the garage now its cold and snowy out here but its in da garage.... oh and i air hosed it dry ok .....now the next day i went to work and all was good ....i parked it in the parking lot ..after 10 hrs my shift was over and now i drive the car home now here when the problem starts........When i turn my car off the coolant fan still is going and the heater blower is on in the dash....where as before i turn the key off and everything is off ......ok the fan goes for a little bit thats normal and shuts off but now it just stays on... just stays on completely and the heater still has power li turn it off on the dash but still i can turn it on without the key ...i replaced the coolant relay switch so its not the relay ....and i checked the fuse and its not that so i just took off the fuse now all is off ......but i put the fuse in and everything is on .....so if someone knows whats going on with my coolant fan being possessed i surely would appreciate it ..thanks


https://www.2carpros.com/forum/automotive_pictures/460716_0930081723_1.jpg

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Sunday, January 5th, 2020 AT 7:07 PM (Merged)
Tiny
KHLOW2008
  • EXPERT
Hi tiresmoke,

Thank you for the donation.

The blower motor receives its power from the blower motor relay in underdash fuse box. There is a possibility the relay is faulty and sticking causing it not to cut off when power is disconnected via the ignition switch. Try swapping the relay to see if it works.


https://www.2carpros.com/forum/automotive_pictures/192750_FuseDash97Accord_1.jpg

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Sunday, January 5th, 2020 AT 7:07 PM (Merged)
Tiny
TIRESMOKE
  • MEMBER
Your welcome. But I found the problem out yesterday 1-9-10 surfing the net. Because I didn't feel like waiting for a tech to answer back. Which im glad I didn't because that's not what the problem was. The problem is. When I read in another website. Is under the hood there"s an accessory relay or coolant relay on top of the right side of the radiator corner. Which there's two of them which I replaced it which cost for each one $32.00 and that was the answer to my problem. The fan shuts off and the inside power is cut off the the ac/heat. So for any one else who has this problem as I did. Don't put all your eggs in one basket waiting for an answer. Do alot of research first which is free. Thank you anyways
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Sunday, January 5th, 2020 AT 7:07 PM (Merged)
Tiny
KHLOW2008
  • EXPERT
Thank you for the input.

You are correct, the relay tends to short out when water gets to it, especially if the relay has detached themselves from the mount and becomes inverted. Water would collect and penetrate into the relay and cause it to short resulting in fans and blower to work.
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Sunday, January 5th, 2020 AT 7:07 PM (Merged)
Tiny
TLAMBERTS
  • MEMBER
  • 1996 HONDA ACCORD
  • 4 CYL
  • FWD
  • MANUAL
  • 135,000 MILES
When the car would not start and would not take a jump, my father discovered that there was a battery fuse that was burned out. We replaced the fuse and the car took a jump and starts fine but when you shut off the engine a fan continues to run. My father was able to disconnect this fan but we are not driving it in case overheating will result. I see from other posts that a faulty fan relay is often the cause for this. I am wondering if you would diagnose the same here and if so, can we replace this relay on our own or do we need to take it in to the garage?
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Sunday, January 5th, 2020 AT 7:07 PM (Merged)
Tiny
KHLOW2008
  • EXPERT
Hi tlamberts,

Yes, the problem seems to indicate a faulty relay and the replacement is simple which you can do it. Pull it out and plug in the new unit and it is done.

However you should test if it is the cause first as the fan switch or it circuit if shorted to ground would cause the same problem.

Turn ignition switch ON and pull out the relay, if the fans stops, replace with another and if fan does not operate, the relay is faulty. The power window relay is similar so you can try by borrowing from it to test.

The diagrams I have is for a 2.2 liter and hope it is the correct one.


https://www.2carpros.com/forum/automotive_pictures/192750_FanRelay96Accord22_2.jpg

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Sunday, January 5th, 2020 AT 7:07 PM (Merged)
Tiny
PINHEADFROMHELL
  • MEMBER
  • 1996 HONDA ACCORD
  • 4 CYL
  • 2WD
  • MANUAL
  • 180,000 MILES
I just finished replacing the radiator and thermostat in my Honda accord. I believe I bled all the air out of the system through the coolant bleed valve by squeezing the hose, but I am not sure what is meant by "fill until a steady stream comes out". All I ever got was a dribble. The problem came when I hooked everything back up. The first thing I noticed is that the cooling fans didn't come on unless I turned on the AC. Upon further inspection, I found that the upper radiator hose was getting really hot and the lower one was hardly even warm to the touch. I figured it was the new thermostat I put in, so I replaced the old one (which I tested with the boiling water method and it was fine). The problem persists and I am unsure of where to go next. The relays were all working fine when I took the old radiator out.
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Sunday, January 5th, 2020 AT 7:07 PM (Merged)
Tiny
MERLIN2021
  • MEMBER
The top hose is ALWAYS much hotter than the bottom, this is the water coming out of the engine to bee cooled in the radiator. The lower hose supplies the engine with cooled water If the fans don't come on they may not be needed at the temp the engine is at, or the ECT may be defective. But because they run with the a/c on means the fan is good!
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Sunday, January 5th, 2020 AT 7:07 PM (Merged)
Tiny
EZE3603000
  • MEMBER
  • 1996 HONDA ACCORD
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 120,000 MILES
Hello I hav a 96 honds accord and both cooling fans wont turn on.I thought I was getting poor coolant circ I changed the thermo and they still dindnt work. If you turn the ac on it doesnt work, I tried to test the resistance of the coolant switches and I get nothin. It seems like my engine is over heating but my guage reads normal on the cool side. Wich if the engine isnt worming up the coolant enouph the switches wont hav resistance. Other test ive done the relay in the fuse box is good I think. If you unplug the wire at the coolant switch b and jump the terminal with a wires the relay clicks but the fans dont com on. Does this mean that the problem is from ther to the fan relay to the fan. The motors are good, also when you jump the green whire on the fan control box behind the glove box the fans do come on. Or could I have a wirng problem or could an open ground couse this problem? Thx
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Sunday, January 5th, 2020 AT 7:07 PM (Merged)
Tiny
F4I_GUY
  • MEMBER
Sounds like the fan motor(s) have failed. Try applied direct power and ground to the fan. If they don't turn on, replace them.
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Sunday, January 5th, 2020 AT 7:07 PM (Merged)
Tiny
EZE3603000
  • MEMBER
I have tested the motors ther good both of em did you read the whole post I jumped the wires at the fan control box behind the glove box and the fans came on when you jump the wires at the coolant temp swith you can here the relay under the hood fuse box click but the fans dont come on so should the fan relay on the side of radiator click and turn the fan on or is it electrical
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Sunday, January 5th, 2020 AT 7:07 PM (Merged)
Tiny
RIVERREV
  • MEMBER
  • 1995 HONDA ACCORD
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 100,000 MILES
I have a 1995 accord ex that had a blown motor when I bought it. I put a new motor in with new radiator and fans. Neither fan comes on with the ac on or off. The fuse inside is good and the cooling fan relay is good. My repair manual mentions other relays, but is not clear on their location or how to test them. Help?
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Sunday, January 5th, 2020 AT 7:08 PM (Merged)

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