1991 F150

Asked by Jun 10, 2017 at 10:52 PM about the 1991 Ford F-150

Question type: Maintenance & Repair

I I recently replaced my fan clutch in my 91 f150.
Only four weeks later my serpentine belt snapped
while I was driving. After replacing the belt there is
a horrible squealing noise and the engine's fan is
not turning at normal speed. I wonder if something
has seized up in the engine... Help!?!?

2 Answers


Something - idler wheel, water pump, alternator, power steering pump or AC compressor is seized up.


Since the belt broke and you did not replace it when doing the clutch fan, my concern is whether the clutch fan is installed correctly and now the second belt is taking the heat so to speak. Could it be aligned incorrectly? If it is not turning and the engine is turning then its not the engine its the clutch fan. Take the fan assembly with your hands and move it back & forth. If the clutch or fan have excessive play, remove the fan & clutch & check if the water pump shaft -- where the fan-clutch assembly mounts, see if it displays excessive play. If the water pump shaft does not but the clutch fan does then replace the fan clutch. If the water pump does then replace the water pump. Also by doing this make sure its not installed wrong or loose ect. Also by taking the parts off to replace the clutch fan the Idler or tensioner pulleys may have met the end of the functional life span and need replaced, I know since you just replaced the belt you now are thinking it is still good but in-fact if there is another issue causing the belt strain it needs to be fixed and the new belt needs inspected for wear, and replaced if needed.

Your Answer:


Looking for a Used F-150 in your area?

CarGurus has 223,974 nationwide F-150 listings starting at $495.


Ford F-150 Experts

  • #1
  • #2
  • #3
View All

Related Models For Sale

Used GMC Sierra 1500
1,261 Great Deals out of 68,648 listings starting at $1,000
Used Ford Mustang
703 Great Deals out of 39,796 listings starting at $1,795
Used Ford Ranger
151 Great Deals out of 4,697 listings starting at $1,495
Used Ford F-250
374 listings starting at $2,995
Used Ford Explorer
1,577 Great Deals out of 85,849 listings starting at $1,275

Used Cars for Sale

2019 Ford F-150 For Sale
43,129 listings starting at $22,088
2018 Ford F-150 For Sale
309 Great Deals out of 102,985 listings starting at $18,620
2017 Ford F-150 For Sale
299 Great Deals out of 7,289 listings starting at $14,995
2016 Ford F-150 For Sale
603 Great Deals out of 13,450 listings starting at $10,995
2015 Ford F-150 For Sale
758 Great Deals out of 14,595 listings starting at $11,500

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.