superbefey2050

So, I'm brand new to the forums and need some help with my car.
I have a 97 Honda Civic Ex that I bought about 2 months ago. Going to school one day, the car started smoking from the radiator. I looked under the hood and the radiator fan motor wasnt spinning and the gauge was up 3/4.

So I decided to replace the radiator fan motor. After putting the new one in, the fan still doesn't turn. I hooked the old motor up to a jump box and it began to spin. So it wasnt the motor.

I then checked the fuses and relays in the black box near the battery. They all looked fine and plugging in the A/C relay into the radiator fan motor relay and the motor still didnt spin. Putting the A/C relay back into relay port and the A/C turned on so it wasnt the relays.

I then replaced the thermostat, radiator, and thermoswitch/thermosensor/radiator fan switch. After replacing all those, still nothing. PLEASE NOTE. I TRIED JUMPING THE THERMOSWITCH CONNECTOR WITH A PAPER CLIP AND THE RADIATOR TURNED ON.

The radiator is full of radiator fluid and running off the paper clip in the thermoswitch connector. I've searched the forum and people have either been saying that they replaced their thermoswitch and the car works or that when they jumped it the fan didnt come on. Neither of these apply to me since the radiator fan comes on when jumped, but I've replaced the thermoswitch already.

mouab18c1

iTrader: (5)

well does it still overheat now? try taking the paperclip out and see if it overheats. the fan usually turns on when driving. i never see my fan come on but i know its working since i never overheat

superbefey2050

Yea it still overheats, hence why I have a problem....

I've taken it off and let it run for 20 min. Needle on temp gauge is in the middle and the fan still doesn't come on.

mouab18c1

iTrader: (5)

does it go pass the middle? and by thermoswitch, you do mean thermostat right? and you did bleed your coolant system correct?

fcm

If jumping the "Engine Coolant Temperature Switch" plug, [green and black leads] turns on the rad fan then then the rad fan circuit is good...

ECTS supplies a ground, [when closed] to the "Radiator Fan Relay" the RFR in turn supplies 12V+ to the rad fan, [black/red connected to blue at the fan].

When engine coolant gauge is in the middle engine is not overheating, that would be normal engine temp., the ECTS will not close until engine coolant reaches 196-203 degrees F.

Start engine, place cardboard in front of rad. see if rad fan turns on after engine temp. gauge goes past the middle of the gauge. 94

B20B_arabia

need some help guys, i bought a honda cr-v 98 model, my gauge shows that megine is hot, but when i chhecked under hte hood everything is ok, revoir is still the same level, radiator coolant is still full, i replaced my sensor and still the gauge is in 3/4, fan is also running. i did clean before my instrument cluster and removed the dials. do you think my problem is on the gauge and not in the engine?? help please... thanks

fcm

If engine is not over-heating then the problem is the gauge, maybe you did not install dial in the correct spot after removing it. I am pretty sure they are not indexed. 94

chrisobrien1991

I had that problem with my Honda Civic. It would overheat. I had a blown head gasket and had a bunch of oil and crap in my cooling system. Did a head gasket on yours blow? If so take it to get all the gunk cleaned out. It helped mine.

94preludebb4

check all coolant temperature connectors, then make sure it is bled properly after that compression test to see if headgasket could be bad, waterpump will also cause overheating issue

B20B_arabia

Problem solved guys, @fcm- i replace my temp gauge with prosport performance series and its doing good. got no issues on my engine, but i will soon replace my water pump and thermostat, its quite old too. and the previous owner never used coolant, so for sure water pump impeller is already rusted.. i'll keep you posted... Thanks a lot for the replies...