1990 Honda Accord Cooling Fan Not Working!

I have a 1990 Honda Accord that I just purchased a few weeks ago...The
other day the temp gauge went to the max...I realized the cooling fan
is not coming on at all. I don't know much about cars at all but I
checked the cooling fan (15A) fuse and it's ok...I also checked the
Cooling fan relay and it looks ok. Is there anything else I can
do/check to try and fix this or would anyone know what could be wrong.
I doubt it has anything to do with it but this happened right after I
had some stuff done at Jiffy Lube. Any help is appreciated! Thanks!

 

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Nothing seems to work right on Honda cooling systems if the reservoir
isn't full enough. When the thermostat opens the level goes low and the
coolant switch won't cut in if it's not immersed. Fill the reservoir to
the MAX mark, and inspect it three days in a row. Use honda premix or at
least distilled water if you have to. No tap water.

In a pinch you can turn on the HEAT or the AC to get the problem under
control, but you risk cracking / warping your head every minute you run
it with LOW coolant (air in cooling system).

'Curly'

 

wrote in

Some older Civic-based vehicles have their fan switches right next to the
oil filter. Ham-handed filter removal attempts can crack the switch,
rendering it inoperative. I don't know where your switch is, as my manual
has no diagram for that. But it's certainly worth having a look.

 

The 90 Accord has a nice bleeder valve on the thermostat housing (10mm
deep socket?). I use a small diameter clear vinyl hose, open the valve,
and push the hose on the valve end. With the engine running, fill the
radiator and let the car get to operating temp. Put the other end of the
hose in your antifreeze jug and let the system purge of ALL the air.
You'll see the stream from the hose run without bubbles. Close the
valve, and instal the rad cap. The radiator cooling fan should come on.
Be sure the coolant overflow bottle is half full. Check the radiator
and hoses for leaks. Watch the temp gauge on your next trip. bob

 

The valve uses a 12mm deep socket, and you will need six feet of vinyl
hose that has an inside diameter of 1/4 inch. bob

 

And be super careful not to overtighten the screw otherwise it will
strip out and hot water will gush out on your face and neck.

 

Ouch! Always practice safe screwing. bob