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Old 11-09-2013, 05:03 PM   #1 (permalink)
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Default 2004 Optra electric fan question

I have a 2004 Optra that has had some recent problems with overheating. While checking out my owners manual I noticed that I have a hi and low electric fan relay and fuses but only have one electric fan. I looked on the radiator and it looks like it has mounts for an electric fan but I couldn't locate any wiring. This vehicle does not have a/c so I am wondering if there are two different speeds for the single fan or I got dicked around and bought a car that is in fact suppose to have two electric fans.
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Old 11-10-2013, 09:45 AM   #2 (permalink)
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hi. as far as i know you should have two fans behind the radiator. maybe they were having trouble with it so they just had it removed? if i remember correctly one comes on normally to cool the radiator and the other comes on during high loads like if the ac is on. ive seem some fans going for pretty cheap. check out the online manual. it has wiring diagrams in it. should show you the routing for the wires. check and see where they might have been removed from.
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if you get lucky its a plug in connector and you could replace it it with a stock fan. now unfortunatly if it was removed they did it for a reason and by replacing the fan you might also need to fix whatever was wrong with the fan to begin with. maybe its really no big deal though. let us know what you find out. anything else just ask.
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Old 11-10-2013, 12:29 PM   #3 (permalink)
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My car is not equipped with a/c, that is what makes me wonder is they just put in a single cooling fan instead of the two and they just use the same radiator for both models. I have looked in that service manual and I can't locate Forenza or Optra. Is there a similar model I don't know about?

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Old 11-10-2013, 01:51 PM   #4 (permalink)
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The entire service manual is for your car. There are two motors in it, the 2.0 and 1.8. the whole manual is for the 2.0 and if there is something different for the 1.8 it's indicated by a *. Lacetti is just a different name for the reno/forenza.
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Old 11-10-2013, 07:37 PM   #5 (permalink)
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The non-A/C equipped models only have the one main cooling fan. You will, however have a cooling fan resistor which will be switched in series with the cooling fan to provide low speed operation. I have included a diagram with its location.
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Old 11-11-2013, 08:57 AM   #6 (permalink)
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Interesting... I didn't know the NON-AC models had only 1 fan.
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Old 11-11-2013, 01:58 PM   #7 (permalink)
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Thank you gentlemen, one less area I have to worry about. However I have found a new problem. On the drivers side of the cylinder head there seems to be something leaking out of it but the odd thing is it only loses coolant when it overheats.
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Old 11-11-2013, 03:14 PM   #8 (permalink)
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Well when it overheating that's when pressure would be high so that makes sense. What you need to do is see what it is that's leaking from that area, oil or coolant. Clean the area off, that will make it easier to pinpoint where the leak is and what's leaking. If it's oil it could just be a simple valve cover gasket or if it's coolant it could be your EGR gasket. Let us know what you find out
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Old 11-25-2013, 03:12 PM   #9 (permalink)
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Well, car overheats on me again today and antifreeze is flying out of it. So I grab my flashlight thinking my water pump has kicked the bucket. While looking to see where it was coming from I notice a clamp half way up what looks to be an overflow hose. How the hell did this happen? I never touched it, never had the car to a garage for any work done on it which leads me to believe I bought this car and this clamp was never at the base of the hose. So I get out the pliers and put the clamp back on and fill it back up with antifreeze and run the proper bag off it for about 20 minutes and it didn't over heat. I'm wondering if the squeeze clamp was restricting the flow causing it to over heat starving it for antifreeze? So weird!
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Old 11-25-2013, 03:59 PM   #10 (permalink)
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The hose also could have been leaking antifreeze under load. Glad you found it!! Hopefully that's the fix. Any other questions just ask!
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