My girlfriend's 1993 Accord's radiator cooling fan has been kicking on and running for a couple of minutes after she shuts her engine off. It had never never done that before the last 2 weeks. Any Ideas?
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It can be faulty fan relay.The relay is not turning the system off.Or its wire short issue.Even with ignition off ,the fan relay is getting power so its not letting the fan to turn off.Bypass the fan control relay and see if still the fan works with ignition off or not.
For more troubleshooting check the link below:------
Run a cooling system pressure test. If you are losing pressure, then you will have to first locate the source of your leak.
With the engine started and the radiator topped off with coolant, does the radiator spout water out of the top? Does the spouting become more aggressive with engine revs? Yes? = Blown head gasket, or cracked cylinder. No?- check operation of radiator cooling fan. With car stationary and hood up, run engine up to temperature and make sure radiator cooling fan kicks in before the engine temperature rises too high.
hi this sounds like your radiator fan switch is u/s, you should be able to locate it on the radiator itself, either on left or right hand side, look for a large nut looking thing with 2 wires coming out and that will be what is needed...hope this helps
Several things ... best guess, in order:
1. (very likely) Radiator fan is not blowing (turn on car and a/conditioner. When compressor kicks in, the radiator fan must blow). If it ims not blowing, the radiator fan motor may be burned out ($40).
2. Check / replace "cooling fan" fuse ($1) and / or "cooling fan" relay switch ($7).
3. Could be (not likely) thermostat sticking shut. Replace thermostat ($20)
4. Could be radiator hose collapse (not very likely) ($18)
5. Radiator clog or hose leak (possible)
6. Head gasket broken (not likely unless you don't fix current problem) ($150)
The more detail of the symptoms, the better we can assist you.
On my 1996 Accord (4cylinder), this was caused by a tube inside my radiator overflow tank dropping off into the tank - the radiator would have too little fluid in it, so the fans would run a LONG time after shutting the thing down. The tank is in the front left, a white cap with a black tube running out of the cap to the radiator. Underneath the cap there should be a foot or so of hose - this is what fell off of mine.
Hooked it back up, made sure enough fluid was in the radiator, and no more problem.
The dashboard coolant heat gage will show the high temperature, also.
hey, i responded to your other posting, you are correct that one fan is for a/c, one for regular engine cooling, it is normal for the radiator fan to run for 2 minutes after car is shut off. I believe the a/c fan only runs when a/c is on, so I don't believe it's a problem, unless it isn't running at all. Is the car running hot or overheating? If not, it sounds normal.
check thermostat might be sticking or radiator may need flushing if it only heats up while idling check your electric fan may not be coming on try turning on the a/c the 2 cooling fans should come on then if they do then i would check the cooling fan switch if they do not come on when the a/c is switch on you may have a bad electric fan motor or wiring to the fan or fan relay
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.