chb93

As the title says I have a 93 hatch with a b series swap. Ever since I bought the car it has had a overheating issue. If i let the car run for a few minutes while parked or even get stopped at a long light while driving the temp gauge will start to go up pretty quickly. I changed the water pump and thermostat so I know its not that. My problem seems to be with the fans because I have a larger radiator from an integra but only 1 plug to supply power to the two fans. I figured I could splice it to run power to both fans, but I dont know were to begin. I dont want to mess anything up so I figured I would ask. Thanks h-t.

Civicfanatic_09

Is your fan even working?

asianpoet

i have the same swap with my del sol.... even the radiator.. but, I dont have the same issues..
you should check to see if all the hose is connected... the fan.. does it come on.. or do you have the fan plugged into the ac.. switch..???
flush the coolant.. since the car wasnt owned by you previous.

chb93

One is working and one is not. There is only one plug to power the fan. Im guessing that civic radiators only use one fan because there is only one plug for power. I cannot find anything to power the second one so it is unplugged. Since only one fan is getting power Im guessing thats the reason Im overheating?

chb93

Flushing the coolant would be a good idea Im just using water at this point because I was going to flush it yesterday and never got to the store to grab antifreeze. I dont know if thats the issue though. On your swap do you have two fans working or only one?

Civicfanatic_09

it shouldn't overheat, most swapped civic's are only running a half sized radiator, with one fan, you have a problem somewhere else in your cooling system, could be an air leak somewhere, cap not maintaining pressure.

chb93

I figured most swapped civics only ran one fan. I'm not sure where an air leak could be coming from any suggestions where I should check? Changing the cap is also good idea. I will do that tm also.

chb93

But like you said, thats with a half sized radiator so since I have the larger radiator shouldn't I need both fans?

Civicfanatic_09

I don't see why you would need 2, but I could be wrong, My car did that before and I found out my radiator was punctured around the fins, never leaked water but started overheating on me.

burnykawizzle

this is what i would do.... get a meter that reads power, a few feet of 18gauge wires... tap each wire on the relay to see which one is getting power... get the wire and run it from your ignition cable thats located from under your steering wheel run those wires to both fans... its easier to do it then by just reading it... also when you fill her up on water let her run for a minute or 2 then give her more water or coolant... water can be used ive always used water did you check your hoses to see if you might have a leak??? on old engines the hoses get wear and tear sometimes you just can't see the tear but you can see some wear

chb93

I just replaced the upper and lower radiator hoses and I dont leave puddles of coolant when the car sits so I dont hink that I have a leak. I just really want to know if the second fan being off could be why im overheating. Im going to do a thurough check tm for leaks but I really dont think that is the problem because my coolant levels dont drop noticably

burnykawizzle

run both fans to the ignition wire..... so when you open up the ignition completely the fans turn on maybe your fan isn't working properly like how it should... i had that problem when i bought my shell and dropped an engine in it so i ran a cable str8 to the ignition wire

-__-

^^uhhh if you don't want to f*** with wiring, JUST JUMP THE FAN SWITCH CONNECTOR (located on thermostat housing, take out the 2-wire connector and stick paper clip or a piece of wire in plug to complete the circuit.) complete the cricuit on the fan switch connector, and your fan will come on when you KEY ON. also bleed the coolant and constantly check to see if the motor is eating or leaking coolant.

billyinse

i wasnt leaving puddles of coolant either but i still had a leak it was just burning up befor it hit the ground and since the car wasnt on allllll the time it didnt leak in my drive way

b20hatchek

do this for me dude, fill the resevoir full and then crank the motor drive it till its good and warm and then open the resevoir but leave he litt hose in the coolant and see if theirs any bubbles, just do that

burnykawizzle

turn on the car leave it parked and see where the leak is at but your saying it burns dry before it hits the ground so it sounds like a small gasket problem if its coming from the engine

kaduku_

sounds like a headgasket. replace the radiator cap with a known working one, flush fill and bleed the coolant. wash the engine bay cleaner than martha stewarts vaj and run it till you spot a leak. if no leak and you got white smoke out of your tailpipes and you smell the sweet scent of your coolant burning, its your head gasket or worse... a crack in your block.

also make sure your fan is working...

b20hatchek

if he would do what i asked him to do then he would know if he has a blown headgasket, just look for bubbles in the overflow if their are bubbles then its blown easy as that

poormanstyperb16

i agree.

poormanstyperb16

either head gasket, your radiator cap needs to be the right one for the coolant pressure, or flush out the coolant. were all repeating the same thing have you try all of these tips?

burnykawizzle

i highly doubt that he has tried... im sure he has given up on it

JPhilBradley

Not sure why they use a full size radiator in an Integra while using only a half-sized in Civics (maybe B series motors put out more heat???). However, I do know that one of the cooling fans (the smaller of the two I believe) comes on when you turn the A/C on to compensate for the added load from the A/C compressor.

JPhilBradley

Do you mean to jumper wire the two pins on the wiring harness connector for the coolant temperature gauge? Wouldn't this disable the engine coolant temperature gauge in the cluster?