Fans running on high speed
50

Asked by Jule Feb 01, 2019 at 11:20 AM about the 2011 Ford F-150 XL SuperCab 4WD

Question type: Maintenance & Repair

The fans run on high  speed within seconds of starting my truck. The shop has replaced relays and flashed the PCM, still no resolution. They are wanting to replace the PCM but I see in the Ford forum that others have gone to that expense but it did not resolve the issue.
Has anyone figured this out? Any suggestions?
Thank you!!!!

6 Answers
50

Jule answered 5 years ago

Ed92626, Thank you, I will have the shop do that next. Hope it resolves it. Will post results of that change out. Again, thank you!

1 people found this helpful.
Mark helpful
50

Jule answered 5 years ago

Shop tested the ETCS and said it tests good. Any other ideas? I really don't want to go to the cost of the PCM because others on the forums say that didn't work either. Thanks

Mark helpful
50

Jule answered 5 years ago

I decided to try to self diagnosis my issue....last night before turning the truck off I turned off all heating and air. This morning I drove my truck 10 miles to work and the fans never came on...would this indicate the trouble is somewhere in the heating or air system? Thanks

Mark helpful
50

Jule answered 5 years ago

I have now driven a couple hundred miles while troubleshooting this. The only time the fans run at high speed and stay on until the truck is shut off is when I am using the defrost. It never comes on if it is only set to heat, everything runs normal. Any suggestions?

Mark helpful
50

Jule answered 5 years ago

Any suggestions on what might resolve the issue?

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • Fans running on high speed 6 Answers

    The fans run on high speed within seconds of starting my truck. The shop has replaced relays and flashed the PCM, still no resolution. They are wanting to replace the PCM but I see in the Ford forum ...

    2011 Ford F-150 XL SuperCab 4WD

    -

    Maintenance & Repair

  • Fans continuously run on high when air conditioner compressor is on 1 Answer

    My trucks fans continue to run on high when the air conditioner compressor is running and will not turn off till you turn the truck off

    2011 Ford F-150 Lariat SuperCrew 4WD

    -

    Maintenance & Repair

  • I cooling fans on radiator 1 Answer

    Electric fans kicking on high and do not shut off run constantly no matter what the temperature is any help would be useful

    2013 Ford F-150 FX4 SuperCrew 4WD

    -

    Maintenance & Repair

  • High speed cooling fan 3 Answers

    My son has same problem with high speed cooling fan. Constantly on and off, then stays on for 30 mins before shutting off. Been to Ford dealer where everything A/C related was changed. Didn't work. ...

    2012 Ford F-150 XTR SuperCrew 4WD

    -

    Maintenance & Repair

  • Radiator fans always running oon my 2013 F-150 FX4 3.5 Ecoboost 1 Answer

    Why are the radiator fans always running on my 2013 F-150 FX4 3.5 Ecoboost?

    2013 Ford F-150 FX4 SuperCrew 4WD

    -

    Maintenance & Repair

F-150

Looking for a Used F-150 in your area?

CarGurus has 13,584 nationwide F-150 listings starting at $1,712.

Postal Code:

Shortcuts

Search Ford F-150 Questions

CarGurus Experts

  • #1
    OJ
    Reputation
    42,600
  • #2
    Gene Arnett
    Reputation
    16,040
  • #3
    Rowefast
    Reputation
    15,890
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Silverado 1500
187 Great Deals out of 5,939 listings starting at $2,975
Used GMC Sierra 1500
122 Great Deals out of 6,519 listings starting at $3,975
Used RAM 1500
468 Great Deals out of 15,614 listings starting at $4,950
Used Ford F-250 Super Duty
18 Great Deals out of 1,152 listings starting at $8,995
Used Toyota Tundra
34 Great Deals out of 1,334 listings starting at $8,995
Used Toyota Tacoma
43 Great Deals out of 1,084 listings starting at $9,998
Used Dodge RAM 1500
5 Great Deals out of 64 listings starting at $3,000
Used Ford Mustang
55 Great Deals out of 1,343 listings starting at $4,995
Used Ford Ranger
26 Great Deals out of 1,573 listings starting at $3,995
Used Chevrolet Silverado 2500HD
27 Great Deals out of 1,243 listings starting at $9,500
Used RAM 2500
45 Great Deals out of 2,106 listings starting at $13,650
Used GMC Sierra 2500HD
30 Great Deals out of 1,490 listings starting at $8,000
Used Ford Explorer
71 Great Deals out of 2,045 listings starting at $3,995

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.