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Old 07 Jun 2012, 08:30 pm
Crid's Avatar
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Default rad fan question

I have an 06 n/a and just replaced my rad fan. And that's all said and done. But I had to drain the rad obvs. And I filled it back up. And let it get to operating temp. And now its runs on the hot side of normal. And when I have the heat on it doesn't blow any hot air. Do I have a heater core lock? And if so how do I fix it. And help would b great!
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Old 07 Jun 2012, 08:49 pm
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Default Re: rad fan question

Quote:
Originally Posted by Crid View Post
I have an 06 n/a and just replaced my rad fan. And that's all said and done. But I had to drain the rad obvs. And I filled it back up. And let it get to operating temp. And now its runs on the hot side of normal. And when I have the heat on it doesn't blow any hot air. Do I have a heater core lock? And if so how do I fix it. And help would b great!
Did you bleed the air with the bleeder on the t-stat housing?
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Old 07 Jun 2012, 08:49 pm
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Default Re: rad fan question

First, you didn't have to drain the radiator to put the fan in but that's a moot point now since you already did it. Second, it sounds like you didn't get everything filled up and you have air trapped in the coolant system. That will cause you to run hot and stop the heater from blowing hot air.

Busted ....you beat me to it.
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Old 07 Jun 2012, 08:52 pm
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Default Re: rad fan question

No I didn't bleed anything, how do I bleed the air our to fix my air lock and cold heat prob. I also need to get some more coolant
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Old 07 Jun 2012, 09:04 pm
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Default Re: rad fan question

See if this helps.

Bleeding air from cooling system
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Old 07 Jun 2012, 09:09 pm
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Default Re: rad fan question

I'm sure that will do the trick. Could I also run the car with the heat on and rad cap off and keep adding fluid? Till it stops bubbling?
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Old 07 Jun 2012, 09:22 pm
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Default Re: rad fan question

Never tried it that way. How does that get the air out?
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Old 08 Jun 2012, 05:15 pm
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Default Re: rad fan question

That's one way to do it. But just be VERY careful, since the coolant can bubble over or shoot out at any time. I use a very large funnel and push it securely into the radiator opening when I do this so that if the coolant expands and needs to get pushed into the reseervoir tank, it fills up the funnel instead of bubbling over onto the engine.

They also make a special funnel for bleeding the cooling system, but I've never seen them sold in stores, only on the internet.
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Old 08 Jun 2012, 05:37 pm
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Default Re: rad fan question

i think every time you take off the cap you introduce air into the system. Keep the cap on and add fluid to the overflow tank and check it that way. It should bleed the air out after few hot/cold cycles
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Old 08 Jun 2012, 07:49 pm
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Default Re: rad fan question

Why not just turn the bleed screw, like you're supposed to. It does a great job. Also, before bleeding, makes sure your heater control is turned to full HOT. And it's a good idea to attach a clear hose to the nipple of the bleeder screw--about three feet long--and attach the other end of the hose to a catch can. This keeps the coolant off your belts, which will squeak if you don't do it this way.

It's not that difficult--except your (I think it's 10mm wrench has to be a shorty to get into the area at the base of the thermostat housing).

Have fun.

Tim
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