Okay these are the sequences of events that lead up to everything today. First off I hit like a big pothole oneday, and then as the days go by my battery light starts blinking randomly and sometimes it stays on and i loose power. Battery is brand new (5 months old) and alternator was changed less than a year ago. Sometimes when I would be driving like my dash lights will get really bright and then go back to normal again. So just the other day....my radiator just blew on me...it exploded. So I got it changed. and put a new cap on as well since the old one had blown rubber underneath. This time it overheats whenever the battery lights blinks randomly. So now i got to turn of my car once in awhile on the road. BTW my ac/heater don't work either after this pothole incident. Everytime i replace the fan motor fuse it just blows again in a couple of minutes. What can be the issue here?

For further information, my car overheated alot today and I parked it. Noticed some coolant leaking and it was from one of the big hoses. It was squirting a bit of coolant out nothing too big, but enought to drain like a half a litre of coolant.

 

Look at the alternator first, your dash lights getting brighter than normal indicate a voltage regulator problem. That could also be the problem with your fan blowing fuses...higher voltage will push more current through the same resistance (your fan), the whole ohms law thing. The coolant leaks just sound like bad luck though.

 

Hmmm that's what I was thinking of first, but could that like mess up my thermostat or my radiator temperature?

 

The fan fuse may be blowing because the fan motor is bad. Does the fan turn freely if you turn the fan blades by hand?

Replace the leaking hose, refill with coolant, and then bleed the cooling system of possible trapped air.

Is the alternator belt loose or slipping?

 

The radiator fan is working properly, i just jumped the fan and its running good, looks like it's over flowing from the cap, but I just got a new cap...from this parts store, My mechanic ordered one that's supposed to come with the radiator, hopefully that fixes everything.

I was talking about the heater motor fan btw. It keeps blowing the fuse. Can a slipping alternator belt cause the battery light to blink and cause these symptoms?....there's no way the alternator can affect your radiotor or the thermostat right?

 

bump anyone1?

okay now the radiotor fan won't come on after heating up the car to HOT, I changed both thermo sensors too

 

Unplug the connector to the blower motor below the glove box and briefly supply direct battery power. Does it run?

Your engine has at least three temp sensors. Which did you replace? The fan temp switch on the thermostat housing would be the one to replace. First jump the 2P fan switch connector to see whether the fan runs continuously with the key in ON(II).

 

yep I jumped them and the fans works properly, i replaced the two that are on the left of the block. One was right next to the thermostat, the other one was near the intake manifold. Do you have a diagram or anything of where they are? Thank you!

 

The radiator fan temp switch is inserted into the thermostat housing. It sounds to me like you unnecessarily replaced the temp sending unit and temp sensor located below the distributor.

Have you done this:

Let's refer to the radiator fan as the fan and the vent blower under the glove box as the blower. What exactly have you done to test the blower?

 

Nothing to test the vent blower but i did test the fan while the key was in ON. And it works perfectly. But yesterday I was just checking my under dash fuses and noticed that the COOLING FAN and HEATER BLOWER are all under one fuse. And that's the fuse that keeps blowing on me because of my alternator. I think if I change my alternator then it's all good. correct me if I'm wrong. pretty much the car only over heats when Im at idle anywayz, once I start driving it goes back down.

Or does cooling fan mean the AC or the blower?...

 

What year and model Civic? What specific fuse # is blowing under the dash?

 

1993 civic si
fuse #13

https://honda-tech.com/forums/showth...light=civic_07

 

bump1 any1?

 

The diagram shows the many components (radiator fan, vent blower, A/C, recirc, vent mode) protected by fuse 13.

Which of the listed components when turned ON causes fuse 13 to blow?

 

I've only seen it blow with the heater on but it blows after 5 minutes of replacing the fuse, the heater would work and after some time it would blow and stop working.

 

I assume you mean that running the vent blower blows fuse 13. Heat is not produced electrically but comes from hot coolant circulating through the heater core. Can I assume that running the A/C also blows fuse 13?

Components that might blow the fuse include the recirculation motor, mode control motor, and the heater control panel. You need to run the vent blower and then push some of the buttons to see what causes the fuse to blow.