I bought brand new radiator fan because the old one melted and wasnt working , i checked the fuse box in the engine bay , i switched them all around i did the paper clip check on the termal switch , fan comes on, i replaced the switch and the thermostat, i don't know what else it could be?

its a 92 civic with gsr swap ,

 

Bleed coolant.

 

bleed it from the thermostats housing or the radiator? when i replaced the switch and thermostat good amoung of coolant leaked , so i poured slowly more coolant in the radiator while car and heat were on , and waited for the bubbles to disappear

 

<p>Bleed through the radiator. Your fan will kick on twice and it should be done. If the fan isn't coming on it is either the switch, wiring or fan itself. You can test the fan with some alligator clips off the battery.&nbsp;</p>

 

fixed it thanks

 

I bled the radiator and tipped it with coolant let the bubbles out, fan was coming on normally . Then today car started overheating , shut it off for 2 minutes and temperature gauge went back to normal half way . Any idea

 

check for any leaks on small hoses.

 

either your pump is not flowing or your thermostat isnt opening

 

i replaced the thermostat 2 days ago brand new. if the lower radiator hose isnt hot thermostat isnt opening , but both hoses are hot, i just notice light smoke coming out near the thermostat / behind the engine , but im sure the headgaskets still good. yesterday i turned on the heat and the fan would come on every few minutes, but today it doesnt come on period? what about fan timer? is that possiblity its a eg gsr

 

I hope to god you're not using straight water as coolant.

 

Pressure test the cooliong system.

What year GSR? Does it have a bleeder valve?

 

obd1 94 gsr , and i dont think radiator does

 

For Civics, the bleeder valve is on the block where the upper hose attaches.

 

didnt find a bleeder , i drained the coolant from the bottom radiator plug , i tested the thermostat in boiling water it opened and closed, i dont know how to test the ECT switch but i bought it few days ago from autozone its duralast . i filled the cooling system with antifreeze let the bubbles out , as soon as i shut the car out obviously it spit some out because it was warm, so i had to fill in a decent amount id say 200 ml , the FAN STILL DOESNT COME ON . the temperature guage goes all the way up H (dont let it go into the red) i shut the car and and instantly turn it back on and the temperature guage start to go back down near 1/2 .

 

Temperature sending unit could be bad. <br /><br />Let the car idle and feel the bottom hose <br /><br />If the gauge shows the needle all the way up but the bottom hose is still cold or not the same temp as the upper then i would swap the sending unit <br /><br />Its under the distributor <br /><br />One wire sensor

 

temperature sending unit or fan timer?

i just went to autozone and returned the duralast ECT switch , wanted to get same one thought the one they sold me 2 days ago was defective, but they didnt have any instock so they gave me valucraft or something like that which is cheaper but no lifetime warrenty, installed it right now it seems to be working fine , fan started engaging. but it was engaging the first day i installed the duralast ECT and the second day it didnt work. hope this one fixes the problem . i hate buying parts from autozone

 

The fan switch is on the thermostat housing <br /><br />The ect is under the distributor 2 pin connector <br /><br />The temp sending unit is the 1 pin connector <br /><br />The ect goes to your ecu for ign corrections and fuel corrections <br /><br />The sending unit just goes to the gauge cluster

 

Start the car today same thing fan doesn't in gage starts to overheat in gonna check out the sensor mentioned above .anyway to test them if they are good?

 

Tested Coolant Temperature sensor it seems to be fine 1.9V
Tested temperature gauge it seems fine as well it had resistance. Next im going to replace 1 radiator clamp going to the thermostat.

 

The temp sending unit and ECT sensor have nothing to do with the radiator fan. The switch on the thermostat housing controls the fan. I have yet to see a post that indicates you are bleeding the cooling system correctly. Get the Integra service manual.

The Integra forum may be a better fit for this issue.

Moved.

 

I do not have bleed bolt . i guess ill try the drain bolt on the block behind the headers also i have overfill tank delete and plugged i don't know if that could cause any problems

 

Bleeding doesn't involve draining the coolant.

 

how can i bleed the system only way i know is to turn the heat on max while cars on with radiator cap off for bubbles to parish , i dont have the bleeding bolt on the engine

 

See Integra service manual. Your engine has a bleeder bolt. Start bleed procedure at step 8.

 

i have the service manual and im looking at it right now and comparing as the picture above that i posted shows the bleeding valve is not there , thanks for looking around though