Go Back   Ford F150 Forum - Community of Ford Truck Fans > Late Model F150s > 1997 - 2003 Ford F150
Sign in using an external account
Register Forgot Password?


Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 10-13-2011, 12:24 AM   #1
Senior Member
 
pissedoff92's Avatar
 
Join Date: Sep 2011
Posts: 260
Mentioned: 0 Post(s)
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Default fan clutch going bad?

How do I tell if my fan clutch is going bad? When I start my truck when its cold I can hear the fan engaged and blowing air. I do alot of offroading and figured that my fan is going bad or i just never noticed this before and its normal, just looking for second opinions.
pissedoff92 is offline   Reply With Quote
Old 10-13-2011, 12:40 AM   #2
Senior Member
 
Tyler.172's Avatar
 
Join Date: Sep 2011
Posts: 1,109
Mentioned: 0 Post(s)
Thanked 2 Times in 2 Posts
Feedback Score: 0 reviews
Default

Does it stay on alot? Or turn on for no reason? Mine is going bad too and that's what it does I have the 4.6l v8
__________________
1992 F150 302 w/ 4speed manual rg cab long box 4x4 33x12.50 MTs short tube headers true dual exhaust tinted windows
97 F150 4.6L V8 2WD Auxillary lights, cherry bomb glasspack, Midland CB W/ pa system and 4ft whips, lightly smoked tail lights (dont know how much bought my truck like that, Avs Window Visors
Tyler.172 is offline   Reply With Quote
Old 10-13-2011, 01:11 AM   #3
Senior Member
 
akdoggie's Avatar
 
Join Date: Jul 2010
Location: Wasilla, Alaska
Posts: 1,509
Mentioned: 2 Post(s)
Thanked 112 Times in 110 Posts
Feedback Score: 0 reviews
Default

All thermostatically controlled fan clutches engage when cold. They release when they warm up. The noise you hear is so common on the Fords. It means that the clutch is working correctly. The fan clutch is still working. The only reason to replace is to get rid of the low speed engagement noise. If you can live with the sound, don't worry about it. It doesn't effect your cooling. It's just an old fan clutch, that has gotten dirty and makes noise. You will still have a whine with a new one. You just won't notice it as much.

I went with the Taurus/Lincoln radiator fan system from a 94-5 with the 3.8 and AC. It fits the radiator almost perfectly, with a slight angle. Works like a champ. I used an aftermarket controller from ebay with the screw in sensor and used a relay for the low and another for the high speed side of the Ford fans. Many use the radiator fin style sensor. You have to tap the housing to install the screw in type but you will always have a true reading to the controller. There are a couple write-ups on here on how to do the electric radiator fan change overs. Believe me, you won't believe how quiet these 4.6's can be. More lower end power and the fact that your engine doesn't sound like a float plane trying to take off on a quiet lake. Deafening. lol
__________________
Born and raised in Alaska, and damn proud of it. Getting ready for the snow.
akdoggie is offline   Reply With Quote
Old 10-13-2011, 01:23 AM   #4
GIGGITY
 
Wondertwin1's Avatar
 
Join Date: Apr 2011
Location: FLORIDA
Posts: 12,058
Mentioned: 2 Post(s)
Thanks: 0
Thanked 18 Times in 18 Posts
Feedback Score: 0 reviews
Default

Easy way to tell. Go wiggle the fan blade. If t moves. Replace before it goes through our radiator.
__________________
1995 5.8 ext cab short bed XLT 4x4 off road, LOADED.
1976.5 F-250 custom 4x4 360, C6, RCLB, highboy.
Quote:
Originally Posted by Bucko
If brains were rain, this thread would be a desert.
Wondertwin1 is offline   Reply With Quote
Old 10-13-2011, 09:23 PM   #5
Senior Member
 
pissedoff92's Avatar
 
Join Date: Sep 2011
Posts: 260
Mentioned: 0 Post(s)
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Default

Im liking the electric fan conversion, the only reason I havent done it yet was due to the fact that summit only had one for like $500 smackers, does the 3.8 fan pull enough cfm?
pissedoff92 is offline   Reply With Quote
Old 10-14-2011, 03:29 AM   #6
Jordan
 
mr7confused's Avatar
 
Join Date: Jan 2011
Location: Chico, California
Posts: 7,862
Mentioned: 2 Post(s)
Thanked 17 Times in 10 Posts
Feedback Score: 0 reviews
Default

its supposed to be 3000 cfm isnt it? or 5000?
x2 on wanting to convert to electric, just dont know if my truck can electrically handle it...
__________________
1992 5.0 XLT 115,000 miles, 4" lift on 31's, 4x4
Quote:
Originally Posted by amick218 View Post
We all don't live where they filmed Children of the Corn..
mr7confused is offline   Reply With Quote
Old 10-15-2011, 11:36 PM   #7
Senior Member
 
pissedoff92's Avatar
 
Join Date: Sep 2011
Posts: 260
Mentioned: 0 Post(s)
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Default

im not exactly sure how much cfm a v8 needs but im deffinatly going to do this if the 3.8 fan pulls enough
pissedoff92 is offline   Reply With Quote
Old 10-17-2011, 02:39 AM   #8
Senior Member
 
akdoggie's Avatar
 
Join Date: Jul 2010
Location: Wasilla, Alaska
Posts: 1,509
Mentioned: 2 Post(s)
Thanked 112 Times in 110 Posts
Feedback Score: 0 reviews
Default

The 3.8 (early 90's to 95) and the Lincoln 4.6 fans both pull about the same cfm. Over 4000 with the high speed engaged. (2 speed fan). This system is so sweet and clean, and NO friggin' NOISE. That is the best part. I did play it safe and install 2 start up (Bosch style) relays, so that the draw wouldn't be too excessive.

A couple other guys earlier were going to install this on their trucks also. One did for sure, and had good luck, the other, I haven't seen his results. Using the Taurus/Lincoln Mark style fans is far superior to the fan clutch system, that comes from the factory, and so much quieter. You have more room on the front of the motor to work on if necessary.

If you have doubts, don't. Using a Ford electric fan (from the Taurus 3.8 or Mark's), is by far the best way to go. You should decide how much you can do mechanically, when ordering the probe. If you are decent, then tapping the housing for the probe wouldn't be hard, but if you think you might have a problem go with the "thru-radiator" probe. It goes thru the fins and read by the temps that go thru the fins. I personally like the screw in sensor. I don't like taking chances with something falling off or out of the fins, and not turning on the fan when necessary.
__________________
Born and raised in Alaska, and damn proud of it. Getting ready for the snow.
akdoggie is offline   Reply With Quote
Old 10-17-2011, 02:46 AM   #9
Senior Member
 
akdoggie's Avatar
 
Join Date: Jul 2010
Location: Wasilla, Alaska
Posts: 1,509
Mentioned: 2 Post(s)
Thanked 112 Times in 110 Posts
Feedback Score: 0 reviews
Default

Quote:
Originally Posted by mr7confused View Post
its supposed to be 3000 cfm isnt it? or 5000?
x2 on wanting to convert to electric, just dont know if my truck can electrically handle it...
I did this change over on my 90 F150/5.0 also. I used a Crown Vic fan for this application. The late model electric fans are plenty big (enough CFM) to work on these trucks (your 92, my 90). They fit the radiators closely, so minimal trim removal is necessary. I only had to cut one tab for the 150 to work and fit perfectly. I also used the intake style sensor, instead of radiator sensor, since the engines in the F150's of this generation are tapped already. The 4.6's in the 97's up are not.
__________________
Born and raised in Alaska, and damn proud of it. Getting ready for the snow.
akdoggie is offline   Reply With Quote
Old 10-17-2011, 11:43 PM   #10
Senior Member
 
pissedoff92's Avatar
 
Join Date: Sep 2011
Posts: 260
Mentioned: 0 Post(s)
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Default

Thanks for the tips. Where can I find the bosch style relays you refer to? I planned on adding lights to my truck and when I roll my windows all the way up then press the button to roll them up my headlights dim and my rpm's drop when idling. The alt. is brand new and its always done this. But id like as little draw as possible.
pissedoff92 is offline   Reply With Quote
Old 10-17-2011, 11:43 PM
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Clutch Help zap General F150 Discussion 0 08-14-2011 09:13 PM
Would air in the clutch cause this. dhonnoll 1987 - 1996 F150 6 07-22-2011 03:00 AM
Ac clutch help xltf150ak 2004 - 2008 Ford F150 4 02-13-2011 10:44 AM
Clutch Pedal at Floor, Clutch not Disengaging penick000 1987 - 1996 F150 7 10-19-2009 08:34 PM
Clutch Help fordinin 1987 - 1996 F150 5 05-09-2009 06:48 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Join F150 Forum

 

The Mustang Source
All times are GMT -4. The time now is 05:44 AM.


Copyright 2006 - 20011 F150forum.com
This site is in no way affiliated with the Ford Motor Company.