overheating
 

Hi, i have a 2002 Honda Civic lx.My car has overheated 2 times since last wed. First 2 weeks ago I had a new radiator put in and car ran fine. Last wed I was going up the mountains and it overheated. it drove fine threw the rest of the week (to and from) work. Friday night I was driving about 15 min and it overheated again. Noticed the fans werent working. I replaced the thermostat and still overheated. So I jumped the fans with a paper clip and they both went on so I know there both working. I also jumped the relay switch and its working.so then i replaced the cool fan switch and still over heating. I ran the car with heat on for 20 min and fans never came on and it over heated and did the same with the air. Anyone know what else it could be? everythigns working but still overheating. TIA

Re: overheating
 

yup.....your head gasket is blown

Re: overheating
 

Just how much heat did the heater put out? None?

I did not see any mention of refilling the radiator. Is it empty?

Head gasket, just because.

Re: overheating
 

Its a good thing OP didn't do any searching in the 7th gen forum... :hithead:

WHEW! --- I was beginning to fret we'd make it a whole day without an overheating post. :evil:

Re: overheating
 

I'd laugh, but the same thing happened to my son's 2003 LX:hithead:

Re: overheating
 

Head gasket is not necessarily the culprit. I would make sure your fans are cycling before taking the head off. If they aren't turning on then that is probably the issue. If the switch relay and fans seem to operate on their own then, I would look at wiring.

After that I would test for a blown head gasket.

Re: overheating
 

Weak/failing water pump maybe? Any leaks near water pump?

Re: overheating
 

He did not mention coolant consumption, if he doesn't have any then that is not the case.

Do water pumps gradually go bad? I thought they just gave out like a light switch, they are directly attached to the belt, so I don't see how it could be weak flow, only flow or no flow... Correct me if I am wrong.

Re: overheating
 

Could be bearing going bad:

Re: overheating
 

I do not trust a man who puts that much blue RTV in a place that needs no RTV at all.

Also I could not get audio for some strange glitchy reason, so all I saw was the pictures.

Honestly I have never had to deal with this issue, because I replace the pump every time I do the timing belt, it's just insurance.

Re: overheating
 

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Re: overheating
 

^^^Good Gawd that place looks like a hole.
Tires along the ceiling like a gas station, grease stains all over the walls.
Or maybe that's black mold I see?
SOAP AND PAINT ARE CHEAP!!


^^Ditto on the blue RTV, and IMO the same goes for orange RTV.
Both scream 'amateur' in my world.

Re: overheating
 

That video confirms my previous understanding... Bearings just make noise, the seal leaks or it just breaks inside. There is no "low flow" situation.

Re: overheating
 

duplicate post
tried to delete
could not

Re: overheating
 

I've had intermittent overheating to an old 1970's Datsun B110 https://www.google.com/search?q=dats...IVTO8UCh1tcQCD I owned about 30 years ago. Replaced water pump and was good to go until I sold it. Rear wheel drive..schweeeet. Only other car that looks as cool is this : https://www.google.com/search?q=rx3&...FYtyFAod5YcFSQ

Maybe I am wrong? Just going by my own experience in which the water pump did cause a low flow situation.
Read it and weep ..son: http://autoresource.internetautoguid...-bad-1389.html

Re: overheating
 

I've witnessed, diagnosed, and fixed more than I care to remember.
YES it happens --- and for various reasons.
It's not a common problem, but it does happen.


Impeller blade/fin wear
Housing wear
Block wear
Impeller slippage

All can cause low flow problems.

Re: overheating
 

Water-pump talk is good an all but, what's really important in this thread is this:

https://s-media-cache-ak0.pinimg.com...a777309b1a.jpg

That's hot & over-heating for ya!

Re: overheating
 

^Izzaat an RX-3?

Re: overheating
 

Yes, Check out the rotary symbol in the front grill.,here's more: http://www.cardomain.com/ride/3825316/1973-mazda-rx-3/

Ezone.. ever work on one of these Honda's: Leno's head is about half the size of the car.