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hey guys and gals, i have a troubling problem....after my front end collision I replaced the radiator and fans, everything seems to have been working fine for the first 2 months. Now just recently the car has been overheating and i noticed the radiator fan no longer activates. what should i do? I have no warranty and insurance does not cover. what is a good way to fix on a budget. both of the radiator and fan assembly is brand spankin new, so i don't think that's the problem. I also already checked the fan fuse and that isn't the blown either. please, anyone with any kind of advice would be very much appreciated. thanks

 
Rep Power: 290

you got enough coolant? you go a coolant flush when you got the new radiator?

Check your coolant. You might have a leak.

 
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Did you check your thermostat?

 
Rep Power: 454

well first check your coolant? Now if your fan is not activating, check to see if you have ppwer going to the fan motor? Just cause it is new doesnt mean it wont be broken. Also you need to check the coolant temp sensors operation? The fan wont engage untill the engine is at proper operating temp. And yes check to see if the thermostat is stuck shut.

 
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There is a temp switch that turns the fan on or off on the block. The ECT is a different sensor.

 
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what he said ^^^^^^^^^^^

 
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They all work in conjunction with each other.

 
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check the thermostat

 
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you gotta remember, since we have transverse engines, the fan is operated electrically. so its only gonna come on when the ecu tells it too (thats why it sometimes comes on when the engine is turned off). but you can still jump the fan switch just to check if it works, but the first thing ill check is the coolant level, and if its good, check the thermostat. remember, the golden rule in diagnosing vehicles is the acronym k.i.s.s. (keep it simple stupid)

 
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i HAD the same problem...same front end collision...same yoyo like temperature reading...at first i would turn the heat and fan all the way up to ensure that the coolant was circulating and at first it somewhat did the trick but then it started happening again but the good news for me was my car was still under warranty...and i don't want to be a bearer of bad news but after the third time i took the car to the dealership they saw that there was something wrong with it (the first two times i took it in the problem never arose) and found that piece of the plastic that was covering the some drive chain on the side of the engine was fused to the manifold and they had a rep from honda to come take a look and basically said to just change the engine...luckily for me they had one in the local honda factory or waitaminit they might have given me a similar car instead..hmmm...

 
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btw...the fan will always turn on if you turn your ac on

 
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where is the thermostat located? how do i "jump the fan switch?" where is the coolant temp. sensors located? and yeah, i already checked the coolant fluid levels.

 
Rep Power: 454

the thermostat is located I think where the upper hose meets the engine block. Or is it the lower hose. One of the two. It is in a housing right there. Coolant temp sensor is right next to the valve cover on the left.

Jumping the fan I dont know how to do that.

 
Rep Power: 364

same thing happened to me ... I replaced my blown headgasket and it works fine .. ... don't know why the fan didn't work before though ...

 
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Check the thermostat first. It is located where the 'upper' radiator hose meets the block. It is not uncommon for them to stick. When you car is at normal operating temp. feel the upper and lower radiator hoses. They should about the same temp.

 
Rep Power: 295

It could also be the head gasket thats what happened to mine when it overheated!