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Replacing Radiator Fan, noticed this?

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Old 03-07-2009, 10:23 AM
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Replacing Radiator Fan, noticed this?

OK, I was replacing the radiator fan and when I was removing it I noticed that this half moon shaped hose behind the pressure sensor wasn't connected to anything, It appears that it has been disconnected for some time since the end was a little dirty. I've searched the forums for pictures of other engine bays, checked the repair manual but can't seem to find out what it is or if it connects too something. Any help?

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Old 03-07-2009, 11:16 AM
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It's a breather hose for the tranny. It's normal.
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Old 03-07-2009, 11:26 AM
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ahhh ok, I saw the other end and it looked like it was connected to the tranny but wasn't certain, Thanks for the quick reply.
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Old 03-07-2009, 11:36 AM
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plug it into your CAI.
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Old 03-07-2009, 12:18 PM
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Originally Posted by NisTech
plug it into your CAI.
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Old 03-07-2009, 12:32 PM
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Originally Posted by NisTech
plug it into your CAI.
Where? can you post a pic? I don't see any place on the CAI to plug it into
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Old 03-07-2009, 01:07 PM
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Don't plug it in anywhere. Keep it the way it is.
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Old 03-07-2009, 03:46 PM
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^^ correct. Breather hose, no worries.
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Old 03-07-2009, 05:57 PM
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Originally Posted by NisTech
plug it into your CAI.
the car equivalent of 'delete system 32'
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Old 03-07-2009, 11:39 PM
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Originally Posted by NisTech
plug it into your CAI.
?
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Old 03-08-2009, 11:31 AM
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i was just kidding. leave it loose.
it's normal from factory
sorry i thought u would get it.
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Old 03-08-2009, 04:20 PM
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Originally Posted by Mattlikespeoples
the car equivalent of 'delete system 32'
System 32?
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Old 03-08-2009, 04:29 PM
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Originally Posted by NisTech
i was just kidding. leave it loose.
it's normal from factory
sorry i thought u would get it.
Maybe you should put a disclaimer on your posts. I actually understood, I just wanted to see if you actually posted anything.
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Old 03-08-2009, 04:55 PM
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Originally Posted by pmohr
System 32?
Windows system files.
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Old 03-08-2009, 04:57 PM
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Originally Posted by djfrestyl
Windows system files.
Ah, system32. The space makes all the difference.

Didn't even think about that, shows how long it's been since I've dealt with Windows...bleh.
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Old 03-10-2009, 09:09 AM
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Originally Posted by papasuede
Maybe you should put a disclaimer on your posts. I actually understood, I just wanted to see if you actually posted anything.
i'll have to eventually make it up to you some other way
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Old 04-02-2009, 12:28 AM
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papasuede, why were you replacing the radiator fan? Was it making a tapping noise & causing vibration like I'm experiencing?
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Old 04-02-2009, 09:03 AM
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Originally Posted by ridinwitha35
papasuede, why were you replacing the radiator fan? Was it making a tapping noise & causing vibration like I'm experiencing?
Not really a tapping noise, more of a grinding, high pitched whirrrrr/screech. There was a little vibration/play with the fan, but the bearings in the motor had gone bad on mine (2nd time) I replaced the other one over a year ago.

FYI, there was a bit of rust at the bottom of the fan behind the radiator on the support So maybe yours is rusted through and when it is running it is causing the assembly to vibrate and make that tapping sound.
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Old 04-02-2009, 11:04 AM
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Originally Posted by papasuede
Not really a tapping noise, more of a grinding, high pitched whirrrrr/screech. There was a little vibration/play with the fan, but the bearings in the motor had gone bad on mine (2nd time) I replaced the other one over a year ago.

FYI, there was a bit of rust at the bottom of the fan behind the radiator on the support So maybe yours is rusted through and when it is running it is causing the assembly to vibrate and make that tapping sound.
Thanks for the info; I'll do a closer inspection soon. I was experiencing an intermittent vibration and thought it might've been the engine mounts or even a suspension problem. Then, I was sitting at a drive-thru waiting for my food when the car started to vibrate; thanks to the drive-thru/side-of-the-building, I could hear that the radiator fan had just activated and heard the tapping noise. As soon as the fan turned off, the vibration stopped.

And now that I think about it, I used to have a high-pitched whistle under the hood as well, but the dealer told me it was my belts. I always thought the sound came from the radiator area.

If you don't mind me asking, how much did the new fan cost you?
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Old 04-02-2009, 05:25 PM
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I bought the whole OEM assembly with the 2 motors, fans and plastic housing from a salvage yard a while ago. I don't know the exact, but I'm sure I didn't pay much over $50.
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Old 04-03-2009, 09:53 AM
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I had to replace one of my fans a while back too. I also got the whole assembly. found it on ebay. no problems.


http://cgi.ebay.com/ebaymotors/RADIA...Q5fAccessories
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Old 04-05-2009, 08:49 AM
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I took a closer look at the assembly and it seems what's giving me the problem is the fan on the right side (closest to battery). It appears the blades have some horizontal play (e.g., I can pull a top blade back and forward) while the one on the left is secure. To avoid replacing the whole assembly, is this something that just requires a new motor or just new blades? Doesn't look like the blades are damaged, just loose in some way.

Last edited by ridinwitha35; 04-05-2009 at 09:01 AM.
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Old 04-07-2009, 01:33 PM
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Bump on replacing everything or just the right-side fan blade or just the right-side motor?
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Old 04-07-2009, 05:09 PM
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Since the blades are plastic resin, they could be cracked and causing the problem, or maybe the nut that holds them on is loose. You can replace the motor, blades, or the entire assembly. There bolts that hold the motor to the housing and then a nut that holds on the blade. You may save some $ doing it that way.
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Old 04-10-2009, 12:12 PM
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I feel so dumb; where are these bolts & nut at? All I see are the threads...are these the bolts? I guess my main question is, do I have to take out the whole fan assembly in order to get to the motors/blades? Are the bolts/nut visible with the fan assembly attached to the car?

On the "upside", I disconnected the right-side fan. Now the car doesn't vibrate & make noise. I guess if the left-side fan goes, then I'll worry.
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Old 04-11-2009, 06:05 AM
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Glad you stopped your noise for now but it sounds like the fun is just beginning.

Yes, you have to take the entire thing out to get to the bolts that hold the motor to the housing. The bolt heads and the nut that holds the blade on are facing the back of the radiator and there isn't enough room to do anything with it in the car.

Keep in mind, you will have to disconnect the air intake, the hose to the top of the radiator, the 2 bolts holding the radiator to the mounts and ...the part I forgot about the 2nd time ...a hose at the bottom of the housing.

This is the only way I was able to have enough room to pull the assembly out. Instead of draining the coolant I used two small towel's and stuffed them in the radiator and hose to keep the coolant from leaking all over the place. If you are quick you won't loose much. I would also suggest putting cardboard or something under the car to catch any other drips.

Last edited by papasuede; 04-11-2009 at 06:08 AM.
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Old 05-10-2009, 09:08 AM
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I now have to replace the fans...since I have overheating issues.

I was trying to take out the assembly & I stripped two of the bolts under the car! Now the cover is hanging as well as the bolt being stuck on the inside. Every time, it's something!
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Old 05-10-2009, 05:40 PM
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Originally Posted by ridinwitha35
I now have to replace the fans...since I have overheating issues.

I was trying to take out the assembly & I stripped two of the bolts under the car! Now the cover is hanging as well as the bolt being stuck on the inside. Every time, it's something!
Not sure why you are taking bolts off under the car??? The only thing that holds the radiator on are the two at the top that hold the mounting bracket to the frame. The radiator just sits in a slot at the bottom
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Old 05-10-2009, 05:58 PM
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Originally Posted by papasuede
Not sure why you are taking bolts off under the car??? The only thing that holds the radiator on are the two at the top that hold the mounting bracket to the frame. The radiator just sits in a slot at the bottom
Looks like he's removing the splash shield, most likely to get off the lower rad hose.
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Old 05-10-2009, 07:25 PM
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Originally Posted by pmohr
Looks like he's removing the splash shield, most likely to get off the lower rad hose.
Actually, it's cause I thought the bolts were on the bottom, lol. The reason why I thought this was cause it seems if I grab the top of the radiator I can push it back & forth, which led me to believe it was secured at the bottom. Guess my newbishness is showing.


Originally Posted by papasuede
Not sure why you are taking bolts off under the car??? The only thing that holds the radiator on are the two at the top that hold the mounting bracket to the frame. The radiator just sits in a slot at the bottom
Easier than it looks, huh? lol

Just for kicks I reconnected the loose/vibrating fan and wow that thing is super violent now; like 5x worse.
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Old 05-24-2009, 05:33 PM
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papasuede, thanks for the help; finally replaced the fan today. All (extraneous) noise/rattling & vibration is gone now. Job wasn't as bad as I thought either...just removed those two bolts, partially drained the radiator, disconnected upper hose, and pulled out the fan. Works perfectly now.
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Old 10-22-2009, 06:03 AM
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Please tell us where you purchased (how much) the replacement fan. I have the same issue.
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Old 10-22-2009, 06:06 AM
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eBay. Wasn't name brand or anything, but no problems after about 5 months. Got it for around $100 if you include shipping costs.
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Old 10-22-2009, 06:16 AM
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Got it thanks. Need to search for the fan, I have the left fan bad, away from the battery. It vibrates so much, noisy, vibration can be felt, feels like the engine is falling off.
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Old 10-22-2009, 01:12 PM
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Originally Posted by ridinwitha35
eBay. Wasn't name brand or anything, but no problems after about 5 months. Got it for around $100 if you include shipping costs.
You just bought the replacement fan right? How were you able to buy the right one, the fans are not the same. Thanks.
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Old 10-22-2009, 01:41 PM
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Originally Posted by mandyfig
You just bought the replacement fan right? How were you able to buy the right one, the fans are not the same. Thanks.
Don't know what you're getting at. I just grabbed the radiator fan (2 fans/motors w/shroud as a complete assembly) for an '02 Maxima.

For example, something like this.

In other words, I replaced both "fans".

Last edited by ridinwitha35; 10-22-2009 at 01:45 PM.
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Old 10-22-2009, 02:19 PM
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Perfect, got it!

The whole fan assembly! One last question, were the connectors plug and play?
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Old 10-22-2009, 07:42 PM
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Yep. No incompatibilities encountered.
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Old 10-23-2009, 08:55 AM
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Alright! I will take down my radiator this weekend and see if I can repair the fan (I suspect the bolt is loose only). If busted, I will get the set from fleabay. At elast I will have done a practice on how to remove and replace the radiator.

Thanks.
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Old 10-27-2009, 08:44 AM
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Did take out the fan shroud last night and yes it is a bum motor on one of the fans. Will need to order the set from fleabay!

Thanks.
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