Squeal in Pully

Asked by Jan 27, 2019 at 11:49 PM about the 1985 Ford F-350

Question type: Maintenance & Repair

I hear a squeal in the motor when the engine is
around 55mph. The air conditioner is froze up so I
assume they bypassed it when they replaced belts.
They said all the belts are tight. Which pully is
squealing? Or is there a way to test them to see
which one squeals.

1 Answer


Karen, there is not a way to bypass the A/C compressor by replacing the drive belt. So you have to be sure to not engage that seized up (stuck) compressor or your belt will burn up and break. That means do not select the heater functions like "Defrost" or "A/C"....those engage that stuck compressor. Have a mechanic help you.

1 people found this helpful.

Your Answer:

Ford F-350 Experts

  • #1
  • #2
    G A Arne
  • #3
View All

Find great deals from top-rated dealers


Related Models For Sale

Used Ford F-250
6 listings
Used Ford F-150
253 Great Deals out of 14,014 listings starting at $1,377
Used Ford Mustang
70 Great Deals out of 1,832 listings starting at $4,700

Used Cars for Sale

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.