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Okay, so I’ve just replaced the headgasket(it was fine but something got stuck in the engine cylinder… long story), the timing belt(original job), water pump, valve cover seals, and the radiator. I followed the instructions in Eric’s video on replacing the radiator, however, now the radiator fan won’t come on.
I turned the AC on in the car, and the condenser fan turns on, but not the radiator fan.
Engine temperature gauge in the car seems to be ok( below half point). But the radiator fan hasn’t turned on when it should. Any ideas?
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the condenser fan is running just fine on its 15 amp fuse.the radiator fan keeps blowing its 20 amp fuse.. To double check the radiator fan, I plug it into the condenser Plug. It blew the 15 amp fuse. I put a 20 amp fuse in, and the radiator fan worked fine on the coolant Plug. this indicates, the fan is OK, but something else on the radiator plug side is not.
Swap the radiator fan relay with condensor fan relay.
See if problem jumps to condensor fan now.
If so, replace radiator fan relay.Radiator fan relay is located in the under hood fuse box.
Check under hood fuse box cover for diagram.
If no diagram on cover, try owner manual or google.
Swap radiator fan relay with power window relay if only same part #.Found pic hope link works
[quote=”NovaKnowledgeNow” post=61005]
College Man, Fuse is blowing right away. I looked for a kink or rubbed through wire, couldn’t find anything. I pulled the fan out and tested it on the coolant fan side, it blew a 15amp fuse, but not a 20 amp fuse(the one it normally uses). I also hooked it up directly to the battery and it worked fine.This tells me the problem is somewhere before the fan, but where?
Rubflor, The fuse only goes bad when the fan tries to turn on, and the fan is there. If I disconnect the fan, and turn on the AC(to force both fans to turn on), the fuse does NOT blow.[/quote]
Lets back up a bit here.
When you pull the radiator fan out and tested with the condensor electrical plug, were you holding
the radiator fan in your hands. This a very inportance point because the fan motor may have a short to case. This short (blowing fuses) will not show it face intill the fan motor case is install/touching body ground. With ohm meter, test each wire of fan motor to fan motor case.
If meter reads zero ohms, replace fan motor.(fan motor has a short to case)I hadn’t bolted it back on to the radiator yet. On a whim, I plugged the condenser fan into the Radiator fan plug, and plugged the radiator fan back into the coolant fan’s plug.
(Basically, I took the fans off, and switched them)
This time, the Radiator fan blew, but the Condenser fan ran fine.
This told me for sure, it was definitely the Radiator Fan. I’m not sure why it didn’t blow the first time I tried it.Either way, I swapped out the Radiator fan motor, and Tada! Problem solved!
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