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Noisy fan Fan motor is mounted vertically with a shroud around it in front of machine blowing across processor

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  • jjoejr Feb 28, 2009

    Sorry, okay here's the problem. This fan has 4 wires on it. Normally the fan makes no noise at all. Here in the last week or so I come up on the computer and the fan seems like it has kicked in to high gear. No doubt it is turning faster and blowing more air. This is the first time I've noticed this. Makes more noise also. Not normal noise but distracting noise. I can turn it off and then back on and poof, the fan is back in low speed. I don't know if its the fan or the sensor kicking it into high gear. It's erratic. Sometimes you can turn it on and off and fan reappears in high speed, and sometimes it doesn't. Tried loading up machine in low speed to make it kick in, but that doesn't do it either. What determines the speed of this fan? Thanx

  • jjoejr Feb 28, 2009

    CPU fan in shroud standing vertically in front of CPU near opening of computer. Apparently it's a variable speed fan and kicks in on high temperature.

  • Thomas F. Schneider May 11, 2010

    OK . And ? What is the problem with the fan?

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  • Master
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Usually the heat sensor on either the CPU or the mother board through the BIOS software ajusts the sped of the van. Are you talking about the CPU fan , The Main case fan or the power supply one? 

Posted on Feb 28, 2009

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Can you remove fan to get alternator out


You can always take the fan out, it is just a question of whether the labor is worth the outcome. I have come across that situation and did remove the fan and/or shroud to gain access when necessary. The shrouds can be a huge pain when you have to remove the motor mounted viscous fan and shroud together. If you can describe your situation more I can probably help you further.

Jan 07, 2012 | 2005 Chevrolet Colorado

1 Answer

2005 Jeep Liberty overheats at idle but while in movement temp returns to normal.


Check to see if the fan on the radiator is working at idle.

Here's information on how to change the fan if needed:

Engine Cooling Fan Removal & Installation 2.4L Engine To Remove:
  1. Remove the coolant bottle and set aside.
  2. Remove the power steering reservoir and set aside.
  3. Disconnect the cooling fan connector.
  4. Remove the cooling fan mounting screws and the cooling fan.
To Install:
  1. Install the cooling fan and the mounting screws. Tighten to 50 in-lb (5.5 Nm).
  2. Connect the cooling fan connector.
  3. Install the power steering reservoir.
  4. Install the coolant bottle.
3.7L Engine To Remove:
NOTE: If the fan blade is bent, warped, cracked or damaged in any way, it must be replaced ONLY with a replacement fan blade. DO NOT attempt to repair a damaged fan blade.
NOTE: For 3.7L Heavy Duty/Max Cool/Trailer Tow cooling package, the viscous fan cannot be removed separate from the shroud. Both fan and shroud must be removed together.
  1. Disconnect battery negative cable.
  2. Using special tool #6958 spanner wrench and #8346 adapters, remove the viscous fan from the water pump.
  3. Gently lay fan into shroud.
  4. Disconnect the electrical connector for the electric fan, then disconnect connector from shroud.
  5. Remove the two fan shroud mounting bolts connecting the fan shroud to the radiator.
  6. Remove the shroud and fan from the vehicle.
To Install:
  1. Install fan shroud assembly into the vehicle. Tighten fan shroud to radiator bolts to 50 in-lb (5.5 Nm).
  2. Install shroud mounting bolts tighten bolts to 89 in-lb (10 Nm).
  3. Connect fan motor wire connector to harness connector, and attach connector to shroud.
  4. Connect negative battery cable.
  5. Start engine and check fan operation.

Aug 31, 2010 | 2005 Jeep Liberty

1 Answer

I have taken case off of unit and it blows cold air but the fan is rubbing on frame


Usually caused by aging rubber fan motor mounts, worn fan motor bearings, the fan blade assembly slipping on the fan motor shaft, or a warped chassis. You can replace or eliminate rubber fan mounts cheaply. A slipped fan blade tends to need a simple position adjustment and tightening or replacement of the lock screw. Worn fan motor bearing or warped chassis are not so cheap to remedy, and since it's a lot easier and quicker to grind down the fan shroud until they no longer make contact, that's the route I tend to take.

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1 Answer

I need to remove the cooling fan shroud from my 1995 Lincoln Continental. How is the easiest way to go about this?


Engine Fan REMOVAL & INSTALLATION 3.8L Engines
  1. Disconnect the negative battery cable.
  2. Remove the radiator upper sight shield.
  3. Disengage the electrical connector, then remove the integrated relay control/constant control relay module assembly located on the radiator support.
  4. Disconnect the fan electrical connector. Fig. 1: Disengage the fan electrical connector 86873115.jpg

  5. If necessary, remove the air bag crash sensor.
  6. Unbolt the fan/shroud assembly from the radiator and remove. Fig. 2: Unbolt the fan assembly from the radiator 86873116.jpg
    Fig. 3: Remove the fan from the engine 86873117.jpg
    Fig. 4: Slide the fan as an assembly up and away from the radiator. Be careful not to dislodge the mounting stud on the left side. 93143p56.jpg

  7. Remove the retainer and the fan from the motor shaft and unbolt the fan motor from the shroud.
  8. Installation is the reverse of the removal procedures. Tighten the fan shroud retaining bolt to 23–33 inch lbs. (2.6–3.7 Nm). Tighten the fan shroud retaining nut to 71–106 inch lbs. (8–12 Nm). Fig. 5: Constant control relay module location — 3.8L engines 86873118.gif
4.6L Engine
  1. Loosen the fan clutch-mounting shaft from the water pump hub.
  2. Loosen the fan shroud from its radiator mounting and remove the lower hose from the shroud.
  3. Lift the fan and clutch assembly and the fan shroud from the vehicle.
  4. If necessary, remove the fan-to-fan clutch retaining bolts and separate the fan from the fan clutch. CAUTION
    Closely examine the fan for cracks or separation, to avoid the possibility of personal injury or vehicle damage. To install:
  5. Assemble the fan and fan clutch. Tighten the retaining bolts to 15–20 ft. lbs. (20–27 Nm).
  6. Install the fan and clutch assembly and the fan shroud. Mount the fan clutch shaft to the water pump hub and tighten to 37–46 ft. lbs. (50–62 Nm).
  7. Slip the shroud into the lower mounting clips and install the shroud retaining screws. Fig. 6: Fan and fan clutch assembly — 4.6L engine 84173064.jpg
5.0L Engines
  1. Loosen the fan clutch-to-water pump hub retaining bolts.
  2. If necessary, remove the drive belt from the water pump pulley.
  3. Remove the fan shroud upper retaining screws. Lift the shroud to disengage it from the lower retaining clips.
  4. Remove the fan clutch-to-water pump hub bolts and remove the fan and clutch assembly and the fan shroud.
  5. If necessary, remove the fan-to-fan clutch retaining bolts and separate the fan from the fan clutch. CAUTION
    Closely examine the fan for cracks or separation, to avoid the possibility of personal injury or vehicle damage. To install:
  6. Assemble the fan and fan clutch. Tighten the retaining bolts evenly and alternately to 12–18 ft. lbs. (16–24 Nm).
  7. Install the fan and clutch assembly and the fan shroud.
  8. Install the fan clutch-to-water pump hub bolts.
  9. Slip the shroud into the lower mounting clips and install the shroud retaining screws.
  10. If removed, install the water pump drive pulley and adjust the belt tension; refer to Section 1.
  11. Tighten the fan clutch-to-water pump hub bolts evenly and alternately to 15–22 ft. lbs. (20–27 Nm). Recheck the belt tension.
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Jul 14, 2010 | 1995 Lincoln Continental

2 Answers

Mt dimension 3000 gets very noisy when the weather


That's because it heats up more easily and faster, which usually makes the fans spin faster and results in being noisy. Have you ever cleaned out the interior of the computer? If not, or if it's been awhile since it's been done, then buy some canned air for dusting electronics, open the side of the computer case (while it's not powered ON), and blow out the fans and the heat sink. If you get alot of just clogging up the heat sink, then it will not dissipate heat correctly; which results in the fans running more often. It that doesn't help any, then I would try to figure out if one of the fans is making alot of noise because it's going bad. You can find replacement fans on ebay, or at local electronics\computer shops.

Apr 10, 2010 | Dell Dimension 3000 PC Desktop

1 Answer

Noisy evaporator fan


A noisy fan is caused by several things. The fan can have the blade touching something behind the shroud (the back wall in front of the fan). It could be the bearings on the fan are no good - try oiling with Triflow oil. The fan blade could be out of balance. Try cleaning any dirt or grime off the blade. Fans are cheap (relatively). Tried a new one?
Some fans are just noisy. Try thin rubber between the fan and the screws that mount it (bicycle tire patches work good for this).

Mar 28, 2010 | Kenmore Refrigerators

1 Answer

How to install fan in dell 2400 desktop computer


Rear computer case fan?

This is going to be a fairly long solution. Advising you in advance.

1) Computer off, and unplugged from power.

2) Open the computer case, TOUCH the metal frame BEFORE you reach inside. Your body carries Static electricity. Touching the metal case will relieve your body of Static.

3) Remove the Processor Air Shroud.
This is the plastic U shaped part that covers the Processor, and Heatsink. It's at the back of the computer next to the computer case, and the fan in the rear.

First, unplug the fan's power cable from the motherboard connector.
(J30 connector on motherboard.
In-between Ram slot 1, and the Processor)

Second, you may have to disconnect the power cable for the Processor, in order to remove the Air Shroud. Disconnect the Processor power cable from the motherboard.

(J10 connector. Square connector on the motherboard to the left of the Processor, and down. There is a power cable from the power supply that goes to it, with a square connector, and has four wires in the cable. Two Yellow, two Black wires)

You may have to disconnect the 20-pin ATX main power cable also, in order to have room to remove the Air Shroud.

(J21 connector on motherboard. Long connector with 20 socket holes in it. It's on the outside edge of the motherboard, to the right of the ram slots.

The power cable connector is a Male connector. The connector on the motherboard is a Female connector.
The Male connector has a lock tab on the side of it. The tab is hinged so that it pivots. The top of the tab is squeezed in to release the lock.

This action draws a hooked end of the tab, out of the Female connector on the motherboard. While keeping the tab squeezed, the Male connector is gently wiggled side to side, while pulling up, and out.

Do Not pull on the wires, pull on the Male connector only. Use a gentle force)

The Air Shroud is gently squeezed in on the sides, with your fingers, and thumb. (Side that is towards the Front of the computer)

Then the side of the Air Shroud that is towards the front of the computer, is lifted up.
The Air Shroud pivots towards the rear of the computer.

The Air Shroud pivots on two round pins. Pins are made into the plastic shroud itself.

Each side of the air shroud, is gently pried out on the bottom where the round pivot pin is, and this action draws the pin out of the rear fan's mounting flange.
Remove the Air Shroud, sit it aside.

Now you can look more closely as to how the fan's mounting flange is attached to the computer case.
At this point I cannot lead you directly, only guide you.

The fan's mounting flange, may have small flat protrusions coming out of it, that go through the rectangular ventilation holes, in the rear of the computer case.

The flat protrusions has a hooked end on them, that hooks on the edge of the ventilation hole. Usual style, requires that you push the hooked end, towards the inside.

(Reference is made in relation to the outside edge of the computer case. The hooked end is pushed towards the middle of the computer case)

It may be a style of mounting flange, where the flange's edge has a lock tang that sticks up.
This lock tang is part of the plastic mounting flange itself.

The lock tang is depressed towards the computer case, and the fan is slid up, and out of a metal bracket.
(May be more than one locking tang)

Observing the mounting flange for the fan, you should be able to see how the fan itself, is attached to the mounting flange.

Usually it's another form of locking tang that is used.
The locking tang, or tangs, are depressed, and the fan slides out of the mounting flange.

If you did not buy a replacement fan directly from Dell, (Don't even know if you can), observe the fan's power cable connector.

Observe where the wires go in the connector. Look at the color code of the insulation of the wires. Match this wire color code, to the original Dell computer case fan.

Are the wires in the same place as the Dell fan?
If not, tell me. Post in a comment.


Jan 24, 2010 | Dell Dimension 2400 PC Desktop

3 Answers

Noisy fan or motor?


HI. The most common issue here will be with a loose motor shaft. This is the part that the fan blades are mounted on. When this occurs, the looseness will cause the motor, and shaft to wobble, thus, causing this noise you here at high speeds. The wobble is less violent during the slower speeds, so it is not loud, in this case.

The second issue will be a warped fan blade. This will cause the fan to rub against the shroud, thus, creating the noise, as well.

If the shaft is loose, or bent, the entire motor will need to be replaced. Now, if the fan blade is warped, you can, simply, unscrew the blade from the shaft, and replace it(on most model)

Dec 11, 2009 | Broan-NuTone Allure III QS330SS Kitchen...

1 Answer

Want to replace the radiator on my 1997 ford thunderbird


Radiator Aluminum Core, Crossflow — 3.8L (Base) and 4.6L Engines
Removal
  1. Drain engine cooling system as described. Disconnect upper radiator hose (8260) and lower radiator hose (8286) and radiator overflow hose (8075) from the radiator (8005). Disconnect the transmission oil cooler inlet and outlet lines from the radiator.
  1. Remove cooling fan motor,fan blade (8600) and fan shroud (8146) assembly as described.
  1. Remove radiator upper bracket retaining bolts and remove bracket. Lift radiator from vehicle.
Installation
  1. Position the radiator into the vehicle. Install upper brackets and tighten bolts securely.
  1. Connect the transmission oil cooler lines to the transmission oil cooler fittings.
  1. Install cooling fan motor, fan blade and fan shroud assembly as described.
Engine Cooling Fan Motor, Fan Blade and Fan Shroud Assembly, Electrical Removal
  1. Disconnect (pull apart) the male-female cooling fan motor wiring connector at the side of the fan shroud (8146). Remove the male terminal connector retaining clip from the fan shroud mounting tab.
  1. Remove two fan shroud upper retaining bolts at the radiator tanks.
  1. Lift cooling fan motor/fan blade (8600)/fan shroud assembly past radiator (8005), disengaging fan shroud from two lower retaining clips.
Installation
  1. Follow removal procedure in reverse order.
  1. Tighten fan shroud retaining bolts to 5.2-7.2 Nm (46-63 lb-in).

  2. 10e2638.gif
    8d231fe.gif HOPE THIS HELPS.

    Oct 30, 2009 | 1997 Ford Thunderbird LX

    1 Answer

    How do i replace the radiaor? on this 2005 Hyundai do i remove the intake cover, then the cooling fan, the the motor mount? what?


    Below are instructions and a diagram for removing the radiator from your Santa Fe. There's nothing involving the motor mounts. Best of luck and please post back with any questions or just to rate the solution. Greg

    1. Drain the cooling system. Remove the radiator cap to speed draining.
    2. Remove the inlet hose from the radiator.
    3. Remove the transmission oil cooler lines from the retainer clip at the bottom of the cooling fan shroud.
    4. Remove the fan shroud clip from the condenser tubes.
    5. Remove the bolt that connects the fan shroud to the condenser hold down bracket.
    6. Remove the air deflectors from the top of the radiator.
    7. Remove the cooling fan shroud bolts.
    8. Remove the coolant reservoir hose from the radiator overflow neck.
    9. Remove the radiator upper support brackets and bolts that connect to the fan shroud.
    10. Disconnect the engine cooling fan motors electrical connectors.
    11. Remove the cooling fan motors electrical harness from the fan shroud clips.
    12. Remove the cooling fan shroud.
    13. Remove the outlet hose from the radiator.
    14. Disconnect the transaxle oil cooler pipes from the radiator.
    15. Tilt the top of the radiator rearward.
    16. Remove the condenser hold down bracket from the radiator.
    17. Lift the condenser from the mounting tabs on the radiator and position the condenser aside.
    18. Remove the radiator.
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    Aug 11, 2009 | 2005 Hyundai Santa Fe

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