1999 f150 4.6........... my truck runs hot if it sits still for about 3min or so specially if the air condition is on , example sittin in the drive thru at mcdonalds or sittin at a redlight , the temp rises quick ...... could the clutch be bad on the fan?! its done this for 2 or 3 years now , i have a baby now so i need to run my a/c.......

thanks for the help

 

Yes It could be pb...now you can put a E fan on there
Symptoms of a Worn / Defective
Fan Clutch that should be Replaced How do you know when your Fan Clutch is wearing out or has failed to do it's job? There are a few key symptoms.

• Excessive Free-Wheeling when spun manually (when engine is stopped) - With the engine stopped, manually spin the fan. If the Fan spins excessively, over 3 revolutions, as though there is no resistance it should be replaced.
  
• If your air conditioner does not perform well at idle or low vehicle speeds then the clutch may have failed and air is not passing over the A/C condenser efficiently enough to cool the refrigerant.
  
• If the fan speed does not increase when engine is running hot or if the fan speed does not increase until engine is excessively hot.
  
• Looseness of the Fan - Excessive lateral movement of the fan blades. If the fan blade moves more than 1/4" front to back measured at the end of the blade. Some lateral movement is a normal condition due to the type of bearing used in fan clutches. Approximately 1/4" (6.5 mm) maximum lateral movement measured at the fan tip is allowable.
  
• Vibration - Sometimes vibration can be detected due to a failed clutch. The vibration can increase with with engine speed. Many times this can lead to water pump failure.
  
• When the engine is stopped, turning the fan blade manually turns rough, grinding or does not turn at all.
  
• Leaking silicone Fluid - Excessive fluid leakage will cause the clutch to fail to engage.
  
• Noise - If you hear excessive fan noise or a roar at all engine speeds. Noise can be detected when the clutch should be engaged, during initial cold startup or when the engine is hot. Under high speeds or higher RPMs over 2500, a locked up fan can create a roaring noise.

When the Fan Clutch Wears and Fails
An important factor when you look at the Fan Clutch is to note that the fan clutch and water pump share a common shaft. Thus the operation of one will affect the operation of the other. For instance if the fan clutch bearing wears, then the fan clutch will wobble. The vibration of a wobbling fan will in turn cause the water pump bearing to wear pre-maturely and eventually fail itself. Likewise a worn water pump bearing can cause a fan clutch bearing to fail for the same reason, vibration being transmitted from one bearing to the other. When replacing the damaged water pump, it is wise to replace the worn fan clutch at the same time otherwise the new water pump will soon fail. That is why the fan clutch should be replaced when a water pump is replaced.



http://www.haydenauto.com/Fan%20Clut...1/Content.aspx

 

yea my air gets hot when its sittin still........ so i guess i need to find me a E fan i can afford right now.....

 

or you can just replace the fan clutch...there's a test you can do to see if yours is bad....

 

wonder how much i cud get a E fan for vs a clutch

 

e fan= $$$ unless you make one yourself.....

 

link dont work pb........

 

http://shop.advanceautoparts.com/web...S_882410754___

 

http://www.modmyf150.com/2010/02/15/...or-cooling-fan

 

That would be the fastest route...you can have it on and cooling in no time pb