1990 Honda Accord Cooling Fan Not Working!

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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'

snipped-for-privacy@yahoo.com wrote in news: snipped-for-privacy@g10g2000cwb.googlegroups.com:

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